108 (a). AGONID.E BRACHYOPSIS. 727 



plates reaching head; pectorals reaching the eleventh plate; ventrals 

 extending beyond front of anal in <?, much shorter in 9 ; the membrane 

 between the rays very broad; anal papilla small. Head 4J; depth 8. 

 D. IX-7; A. 11; V. I, 2; P. 14; C. 10; Lat. 1. 35. L. 8 inches. Coast 

 of California; abundant in deep water. 



(Locldugton, Proc. U. S. Nat. Mus. iii, 60, 1880 (May 6): Agonus (Brachyopsis) bar- 

 Jcani Steind. Iclith. Beitriige, ix, 253, 1880 (July 15).) 



1114. B. xyosternus J. &. G. 



Light olive brown, finely reticulated with darker, pale below; mandi- 

 ble, and sides of head below eye bright silvery; pectoral blackish, with 

 a large light blotch at base below and a broad pale tip ; caudal entirely 

 black; dorsal nearly plain; ventrals plain; anal white anteriorly, ab- 

 ruptly black behind. Form of B. verrucosus, but rather stouter and 

 less depressed; breast covered with minute prickles; plates of body 

 with spines as in B. verrucosus, but without smaller prickles ; ventral 

 fins short, reaching, even in the male, little more than half way to anal; 

 the connecting membrane of the rays very narrow; maxillary barbel 

 long, three-fourths the diameter of the eye; mandible very deep, more 

 than one third as deep as long; upper lateral series of plates obsolete 

 from front of first dorsal forward. Head 4; depth 7. D. VI-G; A. 8; 

 V. I, 2 ; P. 17 ; Lat. 1. 30. L. 5 inches. About Monterey and San 

 Francisco; common about Santa Cruz. 



(Jordan & Gilbert, Proc. II. S. Nat. Mus. iii, 152, 1880 (July 2): Agonus (Brachyopsis) 

 annce Steiudachuer, Iclith. Beitriige ix, 254, 1880 (July 15).) 



1115. B. (?) decagonus (Bloch & Schneider) J. & G. 



Yellowish brown, marbled with darker. Body elongate, compressed ; 

 head depressed ; jaws equal; a pair of spines above the snout, a second 

 above the orbits, a third on the nape, the latter the largest; barbels 

 very short and thick; scales with very prominent spines; six series of 

 scales between the ventral fins and the vent; four between the vent 

 and the anal fin; pectoral fins much longer than head, one-fourth total 

 with caudal. D. VI-7; A. 8; P. 14; Lat. 1. 41. Greenland to Norway. 

 (Giinther.) 



(Agonus decagonus Bl. & Sclin. 1801, 105: Agonus decagonus Giinther, ii, 215: Agonus 

 decagonus Collet, Norges Fiske, 1875, 40: Archagonus decagonus Gill: Aspidophorus spi- 

 nosissimus Kroyer, Naturhist. Tidsskr. i, 250, 1844: Agonus spinosissimns Gunther, ii, 

 214: Leptagonus spinosissimus Gill, Proc. Acad. Nat. Sci. Phila. 167, 1861.) 



