ECOLOGY OF NORTHERN MICHIGAN. 109 



2. Couesius plumbeus (Agassiz). The type of this species was from 

 Lake Superior.* It occurs abundantly in Washington Harbor, X, where 

 eight specimens were taken, August 31, just off shore, on hooks baited with 

 worms. 



3. Argyrosomus artedi (LeSueur). Lake Herring. X. The Herring was 

 observed in large schools in Washington Harbor at different times ; one was 

 taken in a gill net out in the harbor, and one near shore in about fifteen 

 feet of water, August 31. 



4. Cristivomer namaycush (Walbaum). Lake Trout. X. This fish was 

 taken at various times by trolling off rocky reefs in Washington Harbor 

 and along the north shore of the island. The weight of those taken varied 

 from 5 to 12 pounds. 



5. Salvelinus fontinalis (Mitchell). Brook Trout. This -trout occurs 

 abundantly in Washington river, II, and individuals were often observed 

 in the Herring schools in Washington Harbor, just off shore, X. 



6. Lucius masquinongy (Mitchell). Muskallungfe. X. But one specimen 

 of this fish was observed, which was speared with a cant hook near the shore 

 of Washington Harbor on August 2. Weight 13 pounds. 



7. Perca flavescens (Mitchell). Yellow Perch. X. Occasionally taken 

 in Washington Harbor on hooks bated with worms. 



8. Cottus ictalops (Rafinesque). Millers Thumb. X. Occurs among the 

 large rocks along the shore of Washington Harbor. 



3. THE AMPHIBIANS OF THE NORTHERN PENINSULA. 



1. Plethodon glutinosus Green. Slimy Salamander. I have examined 

 a specimen of this salamander collected by Dr. E. R. Downing at Marquette. 

 He reports it as occurring commonly in that locality. 



2. Plethodon cinereus erythronotus Green. Red-backed Salamander. 

 Specimens of this form were taken in decayed-logs, especially in damp places, 

 at Limestone Mountain, Baraga County, in August, 1903, and in the Porcu- 

 pine Mountains in August and September, 1903. It is also reported by Dr. 

 Downing from Marquette. 



3. Diemyctylus viridescens Raf. Green Triton or Newt. I have examined 

 a specimen of this form taken by Dr. Downing from a small tributary to 

 Dead river, near Marquette. 



4. Bufo americanus (Lee.). Common Toad. Found commonly in the 

 woods both at Limestone Mountain and in the Porcupine Mountains in the 

 summer of 1903, and in the Porcupine Mountains and on Isle Roy ale, in the 

 same habitat, in the summer of 1904. It is reported by Dr. Downing as 

 common at Marquette. There are also four specimens in the University 

 Museum collected by Dr. A. E. Foote on Isle Royale, where the notes of the 

 Museum Expedition indicate that it is very common. 



5. Plyla pickeringii Storer. Pickering's Tree Frog. A specimen of this 

 little frog was taken on a fern in a damp ravine at Limestone Mountain in 

 the summer of 1903, and another on a rush in the beaver meadow on Little 

 Carp river, VII. 2, in the Porcupine Mountains on August 3, 1904. A speci- 

 men was also taken by Dr. C. A. Davis near Winona, Houghton County, 

 on September 1, 1905. 



6. Hyla versicolor Lee. Chameleon Tree Frog. Dr. Downing writes me 

 that he has taken this species at Marquette. There is also a record in 

 the University Museum (Museum Catalogue, Vol. 2, p. 196) of a specimen 



*Agassiz, loc. cit., p. 366. 



