Jordan and Evcrmann.— Fishes of North America, 



1931 



between Irout and middle of pupil, 2^ (in yonng) to 2* in leng li ot L^d 

 eye 3^ (in young) to 3^ in head. Gill membranes widely joined, free 

 ftom the istiimus; a Wl-developed slit behind last giU; nasal spines 

 minute, as in Pr<om../i«. ^acellm, barely visible; upper preopercular 

 «piue short and simple, 3 lower ones developed as thin rounded lobes, 

 regularly serrate or spinous. Squamation as usual m T,y?op.; the body 

 above th/lateral line and the top and sides of head thickly covered with 

 small spinous scales; lower side of head, including W^^/—' l^f .«f 

 cheekaLpreopercle, andanaiTOWstiip along lowerhalf of preorbia^^^^^^^^^ 



suborbital ring, and the suborbital stay naked; the series ot slightly 

 enlar<red dorsal scutes very irregularly developed, the plates varying from 

 14 to"34 in 6 specimens counted. Lateral line slightly depressed above 

 •ixil of pectorals, thence ascending by a gently convex curve, sometimes 

 ue-irlv straight, with 54 to 56 scutes of the usual character, having undu- 

 laiing folds descending obliquely from the posterior margins; numerous 

 secondary folds also present, averaging about 2 to each scute of the lat- 

 erl'line the total number of folds counted along lower half of sides being, 

 in adults, about 135; anterior base and axil of pectorals and a s^rip 

 .^ncircling breast in front of ventral tins naked, the breast with a few (o 

 to 10) transverse folds similar to those on sides; the lateral folds leave a 

 wide naked strip along base of anal fin and do not encircle caudal peduncle 

 below. Dorsal spines long and extremely slender, the longest 2i to 2\ in 

 head, the 2 fins separate, the membrane of the last spine extending to 

 base'of first soft ray; soft dorsal very long, its base i to2|in length 

 ending slightly in advance of last anal ray; base of anal 2, to 2, in 

 len.rth ; anus anterior in position, nearly midway between axil of ventrals 

 •uuf front of anal; ventrals inserted in the usual position, their distance 

 from snout 3| or 4 in length. Along their outer margin they are provided 

 with a wide cutaneous fold, as in Tmjlov^ heani. Ihey extend well 

 bevond the vent, in male, or nearly to the front of anal ; pec-torals usually 

 with 21 rays, the lower 7 simple, thickened, exserted, 2 or 3 of them often 

 .,s h.n..- as\n- longer than, the branched rays above, the fin thus appear- 

 ;„. notched or lobed; longest rays extending Avell beyond front of anal 

 and co.itained li to 1) times in head; caudal fin very sharply and deeply 

 forked .'speciallv in male examples, where the median rays are but i the 

 lenoth'of the longest ones; the caudal varies in length from f length ot 

 head (in males) to f length (in females), and contains 11 rays, the lower- 

 „,ost (corresponcUng to the uppermost developed ray) shortened and 

 nnbranched, as usual in Triglops. Coloration similar m the two sexes: 

 Lioht brownish (in spirits) above, the back crossed with the usual 4 

 saddle-shaped blotches, the first one broad, under the first 7 or 8 dorsa 

 spines, the second narrow, under the fifth to the tenth rays of second 

 dorsal the third and fourth very narrow, under last dorsal rays and on 

 back of caudal peduncle; between the second and thud bars are 2 or 3 

 similar fainter ones equally dividing the interspace; the bars are con- 

 tinued to below the lateral line, where they immediately fork, giving nse 

 thus to a series of vertical dark blotches mostly arranged m pairs ; the 

 interspaces between some of the anterior pairs with a bright silvery spot ; 



