CATALOGUE OF VERTEBRATES. 705 



Q. aculeatus, L. (noveboracensis. biaeideatus,niger, irachurus, &c.) New 

 York Stickleback. Burnstickle. Common Stickleback. 



Dark greenish above ; eides yellowish ; ventrals often red ; 

 head long; tail keeled and slender; dorsal spines hinged to 

 plate ; large naked area in front of pectorals. Thirteen rays 

 and three spines in dorsal ; nine soft rays in anal. Length, 4 

 inches. 



" This is an abundant species, met with along the coast 

 generally." 



APBLTES, De K. 

 A. quadracus, Mitch. Pour-apined Stickleback. 



Back elevated ; tail very slender, not keeled ; skin nak^d ; ven- 

 trals, when depressed, enclosed by bony ridge ; free dorsal spines 

 three, directed to different sides, first longest ; brownish olive ; 

 mottled ; silvery below ; male nearly black ; ventrals red in 

 spring. Length, IJ to 2 J inches; 11 soft rays in dorsal; 8 in 

 anal. 



" This species appears, from the writer's investigations, to be 

 the most abundant species of the five. He has taken it in 

 small streams in the interior of the State, at considerable dis- 

 tance from the river, and fully one hundred and fifty miles from 

 the ocean."— [C. C. A.] 



Order ACANTHOPTERI. 



Spiny-rayed Fishes. 



Maxillary distinct from premaxillary, which latter forms boundary 

 of mouth ; bones of jaws separate, and cranium normal. The most 

 extensive order of fishes, sometimes including also the Hemibranohii, 

 Opisthomi and Fediaulati ; or sometimes more restricted, the Atheri- 

 nidce and Mugilidae being classed as Order Percesoces; and the 

 Gadidce, Lycodidce, Ophidiidce, Ammodytidce and FierasferidcB form- 

 ing the Order ArwLcanthvai. By some authors (European), the Ana- 

 eanthini also include the 8ynentognathi and Heterosomata : the group 

 being considered to include fishes with no spines in dorsal and ven- 

 trals, the latter being jugular in position. 



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