The Blennies: Blenniidz 719 
belong to other related genera, Chasmodes bosquianus being 
most common. Blennius yatabei abounds in Japan. In Petro- 
scirtes and its allies the gill-openings are much restricted. The 
EE sat \ 
: : Y ARAN 
3 CN ARARAL 
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\. Youn 
Fic. 618.—Rock-skipper, Alticus atlanticus. San Cristobal, Lower Cal. 
Fie, 619.—Lizard-skipper, Alticus saviens (Forster). A blenny which lies out of 
water on lava rocks, leaping from one to another with great agility. From 
nature; specimen from Point Distress, Tutuila Island, Samoa. (About one- 
half size.) 
species are mainly Asiatic and Polynesian and are very prettily 
colored. Petroscirtes elegans and P. trossulus adorn the Japanese 
