644 NEW YORK STATE MUSEUM 



and December when there Is a great. loss of eggs through storms. 

 Fabricius records its spawning in Greenland in December and 

 January and describes its eggs as red colored. The eggs, he 

 states, are deposited on seaweed. The Greenlanders eat the fish 

 for their daily food and they eat its eggs raw. 



Genus TRIGL.OPSIS Girard 



Body and head slender; skin naked; lateral line chainlike; 

 teeth on vomer, none on the palatines ; eye large, the interorbital 

 area concave; bones of lower part of head extensively cavernous; 

 a small but distinct slit behind last gill; gill membranes almost 

 free from the isthmus, forming a broad fold across it; preoper- 

 cular spines straight, simple, 4 in number, the lower turned 

 downward; fins large. Freeh-water fishes, closely related to 

 O n c o c o 1 1 u s , from which they have doubtless become 

 degraded through fresh-water life. There is no tangible differ- 

 ence in structure in any part of th6 body. 



315 Triglopsis thompsoni Girard 

 Lake Sculpm 



Triglopsis tJiompsoni GIKAED, Proc. Bost. Soc. Nat. Hist. IV, 19, 1851, off 

 Oswego, Lake Ontario; Monograph Fresh-Water Cottoids, N. A. 65, 

 pi. 2, figs. 9, 10, pi. 3, figs. 22-25, 36-38, 1852; JORDAN & GILBERT, Bull. 

 16, U. S. Nat. Mus. 709, 1883; JORDAN & EVERMANN, Bull. 47, U. S. Nat. 

 Mus. II, 2005, 1896. 



Triglopsis stimpsoni HOY, Trans. Wisconsin Ac. Sci. 98, 1872, Lake Michi- 

 gan. 



Ptyonotus thompsonii GUNTHER, Oat. Fish. Brit. Mus. II, 175, 1860. 



Body elongate, very slender, the depth being one sixth of the 

 length. Head long, depressed above, the length being one third 

 of the length of the body. Snout long and pointed; eye quite 

 large, nearly as long as snout, much wider than interorbital 

 space, one fourth as long as the head; jaws subequal; mouth 

 large, the maxillary extending rather beyond middle of eye; pre- 

 opercle with four sharp spines, the upper much shorter than 

 pupil; cavernous structure of skull highly developed; upper sur- 

 face of head smooth; gill membranes not broadly united; nearly 

 free from isthmus. Dorsal fins well separated; spinous dorsal 

 short and low, its bight little more than length of snout; second 



