360 PROCEEDINGS OF THE ACADEMY OF [Apr., 



on the parietal region, which are well developed in the largest. All 

 have a pore or slight slit after the last gill-arch, and the interorbital 

 space nearly as wide as the eye is long. Scabrous tubercles on back 

 and sides fewer in the smallest example. 



Gymnocanthus tricuspis (Reinhardt). 



One example, 188 mm. long, from Godhavn. 



One example, 52 mm. long, from Upernavik, in 10 to 15 fathoms, 

 in August. 



One example, 66 mm. long, from Grandville Bay, in 20 to 40 

 fathoms, August 18. 



Two examples, 62 to 79 mm. long, from Bardin Bay, on August 20. 



One example, 78 mm. long, from Kama, in 30 to 40 fathoms, on 

 August 24. 



Nine examples, 53 to 123 mm. long, from Robertson Bay, in 5 to 40 

 fathoms, on August 24. 



Two examples from Saunder's Island, in 10 to 15 fathoms, on 

 August 3. 



CYCLOPTERID^. 



Eumicrotremus spinosus (MuUer). 



One example, 25 mm. long, from Etah, in 5 fathoms, in August. 



Two examples, 40 to 72 mm. long, without data. 



Two examples, 38 to 70 mm. long, from Grandville Bay, in 20 to 

 40 fathoms, on August 18. 



Also two examples, 36 to 42 mm. long, from Grandville Bay, on 

 August 18. 



Two examples, 33 to 35 mm. long, from Kama, in 20 to 40 fathoms, 

 on August 24. 



Four examples, 25 to 42 mm. long, from Robertson's Bay, in 5 to 

 40 fathoms, on August 24. 



Lethotremus mcalpini sp. nov. Fig. l. 



Head 2|; depth about 1|; D. vii, 9; A. 10; P. about 22; head 

 width about 2| in head and trunk; snout (in profile) 4 in head; 

 eye (in profile) about 3; mouth width about U; interorbital about 

 2; height of first dorsal 2|; height of second dorsal 2; height of 

 anal 21; least depth of caudal peduncle 3|; caudal 1|; upper 

 longest pectoral ray 21; length of disk If. 



Body very robust, greatly swollen anteriorly, so that greatest 

 width about equal to greatest dei^th, or nearly half length without 

 caudal. Greatest width falls midway in region between base of 

 uppermost pectoral ray and anal origin. Contour of body in lateral 



