834 CALIFORNIA ACADEMY OF SCIENCES. 
a. Gill-opening very narrow, almost entirely above base of pectoral, the 
lower edge not below third pectoral ray. , 
b. Anterior nostrils with distinct tubes. 
ec. Dorsal rays about 30; anal rays about 24; form robust; ventral 
disk 24 in head; color brownish, clouded or banded. North 
Atlantic on both coasts, south to Cape Cod. - montagui.” 
ec. Dorsal rays 34 to 36; anal rays 25 to 28; lower jaw included; 
form rather elongate, the head depressed; ventral disk 2% in 
head; color pale, irregularly dotted with darker, sometimes 
plain brownish. Alaska, south to Puget Sound. callyodon. 
bb. Anterior nostrils with a raised rim, and without distinct tubes; 
head short, blunt, 4 in length; ventral disk very large, 1} in head; 
snout blunt; mouth very short, its cleft almost entirely anterior, the 
maxiliary scarcely reaching eye. Dorsal rays 32; anal 26. Color 
plain rosy or brownish, not spotted. Off San Francisco. mucosus. 
aa. Gill-opening rather large, its base opposite 4 or 5 upper rays of pec- 
toral; body deep posteriorly; nostrils with raised rim, but without dis- 
tinct tubes; ventral disk moderate, 24 to 24 in head; head about 32 in 
body, depressed above; cleft of mouth broader, partly lateral, nearly 3 in 
head; color plain brownish or reddish. 
d. Dorsal rays YI-27; anal 21 to 23; pectoral 30; flesh firm. 
Puget Sound to Monterey. flore. 
dd. Dorsal rays VI-34; anal 30; pectoral 35; flesh lax. Pu- 
get Sound. greent. 
g7. Liparis cyclopus Giinther. Plate xcvii. 
Head 4%; depth 4%; dorsal 34; anal 29; pectoral 
205) 1caudal12. 
Body much depressed and rather broad anteriorly, deep 
and much compressed posteriorly; head a third longer 
than broad and a third broader than deep. Flesh much 
more firm and the skin less lax than in most species of 
Liparis. Opercles with a rather strong spine concealed 
by the skin; mouth rather large, terminal; jaws subequal; 
teeth small, tricuspid, in broad bands: eye small, 6 in 
head; snout 3, flattish and broad above; interorbital 
space 4% in head; ventral disk oval, 2% in head, its 
anterior edge half the length of the eye behind postorbital 
margin; gill-opening moderate, 3% in head, extending 
* Liparis montagui Donovan. 
