FISHES OF WEST COAST OF PERU. 151 



tend to certain forms, as circles, oblongs, horseshoes, hourglasses, etc. 

 These may be entirely of a light color or with broAvn centers. 



This form is readily distinguished from the preceding by the 

 coloration. In G. hlacodes, the spots on the sides are much smaller 

 and the under surface of the head and belly is abruptly sulphur- 

 yellow, while in G. chUensis the ground color of the ventral surface 

 resembles that of the sides and back, except that it is lighter and 

 the hieroglyphic markings are continued on to the fins. 



Aside from the striking differences in coloration, this species dif- 

 fers little from G. hlcccodes. A comparison of the measurements of 

 our specimens and those given by Delfin seenls to indicate that the 

 head is a little longer, the average length of the maxillary and diam- 

 eter of the eye less and the width of the interorbital greater in this 

 species than in G. hlaeodes. 



Family BROTULIDAE. 

 Genus BROTULA Cuvier. 



182. BROTULA MACULATA, nev/ species. 



COIT&KIO. 



Plate 13, fis. 3. 



Type.—Qoi. No. 77702, U. S. Nat. Mus. (field No. 09551), 44 cm. 

 long, from Paita. 



Head 4.08 in total length; depth 6.1; eye 6 in head; snout 4.8; 

 maxillary 2.25; pectoral 2.16; ventrals 2.4; D. 105; A. 91; P. 25; 

 scales about 26-220-68 ; interorbital narrower than eye, 6.35 in head ; 

 origin of dorsal slightly behind base of pectoral, its distance from tip 

 of snout 3.92 in total length; vent cephalad of middle of body, its 

 distance from tip of snout 2.25 in total length. 



Body elongate, compressed, not so deep as in related species ; mouth 

 large, oblique, jaws nearly equal, the lower slightly projecting; max- 

 illary long, reaching a distance of more than one-half orbit behind 

 eye, its upper edge slipping under broad orbital bones, its expanded 

 posterior extremity equal to interorbital width, 6.35 in head ; anterior 

 nostril without flap, posterior nostril with a slender barbel about 

 two-thirds length of orbit; two barbels on each side of fleshy upper 

 lip anteriorly ; six barbels on under surface of head ; all the barbels 

 slender and rather short, the longest barely greater than diameter of 

 eye; jaws, vomer, and palatines with narrow bands of minute teeth; 

 tongue very thick, free, and pointed anteriorly ; gill-opening large ; 

 isthmus narrow, grooved; gillrakers short, rather stout; pseudo- 

 branchia3 well developed; opercle with a sharp, stout spine above; 

 body, head, and fins covered with embedded, minute, cycloid scales; 



