110 MICHIGAN SURVEY, 1905. 



(No. 7457) taken on Isle Royale by Dr. Foote, which I have been unable 

 to verify. 



7. Rana pipiens brachycephala Cope. Leopard Frog. The distinction 

 between the typical form of this species and the so-called variety brachy- 

 cephala does not seem to be a good one. If it is, the specimens recorded 

 from the Northern Peninsula, according to Dr. Stejneger, probably belong- 

 to the variety. The specimens collected on the shores of Carp Lake in the 

 summer of 1903, and recorded as R. pipiens* belong to this form. Specimens' 

 were also taken here, V. 1, 2, during the summer of 1904, and Dr. C. A. 

 Davis captured four specimens near Winona, Houghton County, Septem- 

 ber 1, 1905. The " Leopard Frog " is abundant about Marquette, accord- 

 ing to Dr. Downing. Owing to the resemblance between this species and 

 R. palustris Lee. several specimens from the Porcupine Mountains were 

 listed provisionally as palustris in the 1903 list. These have all been iden- 

 tified by Dr. Stejneger as R. pipiens brachycephala. 



8. Rana septentrionaEs Baird. Mink Frog. This species is more aquatic 

 than the other members of the genus found in this region, and specimens 

 are thus more difficult to capture. A number of specimens were taken along 

 the shores of Carp Lake, V. 1, and river, IV. 1, in the summer of 1904. It is 

 also reported by Dr. Downing at Marquette, and there is in the University 

 Museum a specimen taken by Dr. A. E. Foote on Isle Royale, 

 that is labeled R. clamitans, but, owing to its condition, it is impossible to 

 tell whether it is to be referred to this species or clamitans. As it is labeled 

 clamitans, however, it should probably be listed with that species. 



9. Rana clamitans Daucl. Green Frog. This is probably the most com- 

 mon frog in the Northern Peninsula, at least in the western part. Several 

 specimens were taken in Otter river near Limestone Mountain in. August, 

 1903, and it was found to be abundant in Carp, IV. 1, and Little Carp river. 

 VII. 3, and Lakes, V. 1, and VII. 1, in 1903 and 1904. At least one of the 

 two specimens listed as catesbiana in the 1903 list belongs to this species, 

 and perhaps also the other. They are both characterized by an obscurity 

 of the dorso-lateral folds. In the former specimen this obscurity is more 

 pronounced than in the latter, but Dr. Stejneger states that the slight webbing 

 of the toes in the latter indicates that it, also, belongs to this species. 



10. Rana catesbiana Shaw. Bull Frog. See R. clamitans. Dr. Downing 

 reports this species from Marquette, but it is doubtful whether his specimens 

 are to be referred to this species or, as the Porcupine Mountain specimens, 

 to clamitans. 



11. Rana sylvatica cantabrigensis Baird. Cambridge Frog. This variety of 

 the Wood Frog is one of the most common amphibians in the localities where 

 collecting has been done in the Upper Peninsula. It was found to be abundant 

 in damp woods, especially about springs, both at Limestone Mountain and 

 in the Porcupines, during the summers of 1903 and 1904. A single specimen 

 was also taken on the shore of Lake Desor, Isle Royale; this was, however, 

 the only one seen on the island. To this variety are to be referred the 

 specimens that were listed in 1903 as R. sylvatica. 



4. THE REPTILES OF NORTHERN MICHIGAN. 



1. Storeria occipitomaculata (Storer). Storer's Snake. A single specimen 

 of this snake was taken in the Porcupine Mountains in 1903, and a number 

 of specimens collected about Marquette by Dr. Downing have been examined. 



*Ruthven, Inc. cit., p. 191. 



