The author reports three specimens of Vespertilio superans THOMAS and Plecotus auritus sacrimontis ALLEN from Aomori prefecture (Northern Honsyu of Japan) .
A) Vespertilio superans THOMAS
A specimen obtained on August 7, 1955 in Saigosi, Sannohe-gun Aomori pref. by Miss. Mitiko Tasima. Measurements : head and body 59, tail 41, ear from meatus 14, tragus 4.5, fore arm 49.3, hind foot (cu) 11.5, skull (greatest length) 16.8. Colour of upper parts looks like Verona Brown ; under parts Pinkish Buff. The apical portion of hairs between thin colour and white with the exception of those of underparts of neck. Lateral view of the ear and dorsal view of the inter femoral membrane are shown in fig. 1. This specimen has a distinct fold of skin that connects both ears. But this fold never described about this species. The doubt of this adult specimen (_??_) expects to future studies.
Another specimen obtained on August 12, 1954 in Saigosi. Measurements : head and body 60, tail 34, ear from meatus 12, tragus 4, fore arm 45, hind foot (cu) 10.5, skull (g. 1.) 16.5. Colour : blackish, underparts resemble to brown. The apical portion of hairs white. In short, this specimen is immature individual. This young specimen has no fold of skin.
B) Plecotus auritus sacrimontis ALLEN
The auther obtaind this specimen which was on all fours to the ceiling of a cave in Saigosi on April 23, 1954. This individual stoops for eats on the pocket by the interfemoral membrane. And, she pursued the victuals (insects) at crawls on all fours. Measurements : head and body 62.5, tail 49.5, ear from meatus 33, tragus 14.6, fore arm 43.3, hind foot (cu) 8.

View full abstract

Up to present the locality of this rare species has been limited only in Honshu, but a male individual of the bat was caught at Hakozaki, Fukuoka City in Kyushu, on September 16, 1955. This bat is still kept in captivity fed with the larvae of Tenebrio molitor (mealworms) . Some habits observed in captivity were described. The measurements of this animal are given in the table.

View full abstract

Notes on the Fur Seal, Porpoises and Whales recorded by the author during the Fisheries Agency's 1954-Fur Seal Research, June to July, made in the waters from Japan to the western Bering Sea, are given.
Only the occasional and probably late migrants of the Fur Seal (30 seen, 10 obtained) were encountered ; few young animals were still in the Japanese waters in July. Those found in the Attu waters would belonged to the Pribilof herd. The Dall's porpoise (none in the Bering Sea) and the Sperm Whale were often, and the Killer Whale was occasionally seen, while the Finner Whale and Striped Porpoise were restricted to the northern and southen (warm current) waters respectively. The True's Porpoise made mixed groups with the Dall's off Japan (cf. Misc. Rep. Yamash. Mus., No. 6) .

View full abstract

Two large youngs and five small ones of Crocidura dsinezumi chisai Thomas were found in a same nest at Chichibu, Saitama Pref., Central Honshu, Japan, in Sept 28, 1955. The large ones are still blind but completely covered by short blackish brown hairs of about 1 mm long, with long tail and hind foot as shown in the table. On the other hand, the small ones are completely naked and pinkish, with short tail and hind foot. They are estimated 8 to 11 days old for the former group and about 3 days old for the latter. So they can't be a same litter but probably belong to different ones from different females.

View full abstract

Three specimens of Sorex minutus gracillimus Thomas, an adult male from Rishiri Island, Hokkaido, which was new to the Island, and two from Sakhalin, were studied. From these specimens and the data given by N. Kuroda, Goodwin etc., gracillimus may be defined as follows : body and skull as large as median sized typical race (tables 1, 2), but distinguished from the latter by slightly narrower facial region (table 3) and distinct tricolored pattern of the adult summer pelage, rather similar to the adult winter pelage of S. araneus.

View full abstract