Jordan and EvcrDiann. — Fishes of N'orth America. L'069 



AGONOPSIS CHILOENSIS (Jonyns). 



B. 6 ; 1 D. 8 ; 2 D. 7 ; A. 8 ; P. U ; V. 3 (1, 2) ; C. 2-11-2. Interorbital space concave, a little 

 lesa than iliameter of eye, with a pair of sharp minor longitudinal ridges terminating at a 

 ti-ansverse groove beliiud eyes. Snout does not project beyond month; larger margin of 

 suborbitfil witli an irregular ridge formed of bluntisli tubercles, the last terminating in a 

 minute backwardly directed spine. Limb of preopercle with 3 diverging smooth ridges 

 dilating at their extremities into 3 flattened blunt points; opercle with a smaller spine- 

 less ridge. Jaws about equal, the upper a little longer, with narrow bands of teeth; 

 teeth ou front of vomer and a short imperfect row on each palatine. Gill membranes not 

 notched, attached to isthmus; gill opening.s large. Barbels short, on chin, lower jaw, and 

 branchiostegal membrane (a pair also on under side of tip of snout in fig. 1, pi. 7}. Tem- 

 poral and occipital ridges present, formed of granulated tubercles (the occipital "tuber- 

 cles" very plainly in the form of 2 pairs of spines in the figure) ; between occipital ridges 

 a slightly raised longitudinal line ; a deep transverse depression at nape. Temporal 

 ridges end in a sharp point not prolonged into aspine. The ( ;iriiialfd plates moresharply 

 serrate than in A. catajthractns, the spines curved. (All th.- jilatrs spinous from head to 

 caudal in fig. 1, pi. 7.) Six slightly .serrated scales forming mi breast a somewhat trian- 

 gular patch, 2 single ones standing first, the 4 others in pairs. Second and third rays of 

 second dorsal largest ; anal under second dorsal ; pectorals rounded, 5 in length; ventrals 

 scarely more than ^ of pectorals. Vent a little anterior to a line connecting the extrem- 

 ities of ventrals. Color in spirits, dusky gray above and on sides, paler below ; a 

 blackish transvei'se band under front of first dorsal, 1 under anterior and 1 under jjoste- 

 riorend of second dorsal, 1 in middle of peduncle, and a trace of a fifth behind this; 

 body mottled in places with blackish, and the fins, except ventrals, are of the same hue. 

 (Jenyns.) Coasts of Chile and Patagonia, (chiloensis, living at Chiloe, an island ofi' 

 Patagonia.) 

 Aspidorphorus chiloensis, Jeni'NS, Zool. Voyage of the Beagle, Fish., 30, pi. 7, figs. 1, la, lb, 



1840, Chiloe, west coast of northern Patagonia (Coll. Darwin) ; Gay, Hist. Chil. 



Zool., 11, 174. 

 Aspidophorus niger, Kroyek, Ichth. Bidrag. Naturhist. Tidsskr. i, 238, 1844, Valparaiso. 

 Agonus chiloensis, GOnther, Cat., ll,216, 1860. Valparaiso. 

 Agonopiis chiloensis. Gill, Proc. Ac. Nat. Sci. Phila., xiii, 1861, 161. 

 Agonus niger, GtJNTHER, Cat., ii, 215, 1860. 



770. AVERRUNCUS, Jordan & Starks. 

 Averruncus, Jordan &. Starks, Proc. Cal. Ac. Sci. 1895, 821. pi. 91 (emmelane). 



This genus is very close to Stelgis, with which it agrees in the rough 

 armature, the presence of cirri ou the gill membranes, and in other 

 respects ; differing in the presence of teeth on vomer and palatines ; anal 

 fin very long, of 11 rays; lower rays of pectoral exserted. North Pacific. 

 {Averruncus, an averting demon, from the armed head.) 



a. Snout rather long, the rostral spines protruding. emmelane, 2417. 



aa. Snout shorter, the rostral spines scarcely protruding. steri^etus, 2418. 



2417. AVERRUXOUS EMMELANE, Jordan & Starks. 



Head from tips of rostral spines, 4 in length of body ; depth 71. D. VIII 

 or IX, 8; A. 11; P. 14; lateral line 35; orbit 4 iu head; suout, to tips of 

 rostral spines, 3^; maxillary 3|; interorbital 6J; pectoral 1|; second dor- 

 sal spine 2|; third dorsal ray 2^; longest anal ray 2f-; caudal fin 2. Body 

 elongate, subcylindrical, the caudal peduncle long and slender, very 

 slightly depressed, about 3 plates iu front of caudal fin it widens slightly 



