Pareioplite, or Mailed-cheek Fishes 665 
watch the eggs. Cyclopterichthys ventricosus is a large species 
with smooth skin from the North Pacific. 
The Sea-snails: Liparidide.— The sea-snails, Liparidide are 
closely related to the lumpfishes, but the body is more elongate, 
tadpole shaped, covered with very lax skin, like the ‘“‘ wrinkled 
skin on scalded milk.’”’ In structure the liparids are still more 
degenerate than the lumpfishes. Even the characteristic ven- 
Fic. 576.—Liparid, Crystaltias matsushime (Jordan and Snyder). 
Family Liparidide. Matsushima Bay, Japan. 
tral disk is lost in some species (Paraliparis; Amitra) and in 
numerous others the tail is drawn out into a point (leptocercal), 
a character almost always a result of degradation. The dorsal 
spines are wanting or imbedded in the loose skin, and all trace 
of spines on the head is lost, but the characteristic suborbital 
stay is well developed. The numerous species are all small, 
three to twelve inches in length. They live in Arctic waters, 
