KISHES FU(»M IIIK RK\ ILLAC.IGKDO ARCHIPELAGO. 279 



:i. Tho yellow patdi extending bat-kwanl to fioiifc of dorsal and below on 

 Bides only to a lino ])assinii horizontally through ceuter of e^e; no color on 

 pectorals, and only a few sniiill blotches on caudal and lower lip; length, 

 16 inches. 



4. Everywhere dark-brown; scales of sides and lower parts with lighter 

 centers, the brown being reduced to a mere edging; no yellow anywhere; 

 lengtli, 11 inches. 



40. Mediahiiia califoruiensis (Stcindacliner). One Hjiecinion from Cerros Island. 



Family SCI^NID2E. 



41. Genyonemus lineatus (Ayres). Five specimens from Ensenada, Todos Santos 



Hay. 



Family CH.ff3TODONTID-aE3. 



FORCIPIGER .Jordan iV McGregor, new genus. 



Type Clielmoii Ion(/iro8(ri8 Cnvier & Valenciennes. 



This genus diftcrs from Prognathodes Gill in having smaller scales, about 175 in 

 a lateral series instead of 40. Chelmon Cuvier is also closely related, having 

 the same forceps-like mouth; but in the latter genus the spinous dorsal is 

 much less developed, containing about 9 spines. 



42. Forcipiger flavissimus Jordan & McGregor, new species. 



Head 2^; depth 2; eye 6.V in head; D. xii-22; A. iii, 17; snout 1^. in head, 

 its free part 2* in head. Body short, strongly compressed, its outline 

 angular; anterior profile very steep, concave, extending into the forceps- 

 like mouth. Moxith small, at tip of projected head; cleft of mouth 1^ in 

 eye. Scales 9-75-35; small, ctenoid, irregularly placed, smaller on head 

 and bases of fins; rows along lateral line parallel with it only anteriorly; 

 tho.se below run horizontally on lower parts of body and irregularly upward 

 and backward above; lateral line concurrent with back. Dorsal spines 

 extremely strong; fifth spine If in head; longest soft rays 2h in head; 

 caudal 2J in head, slightlj' lunate; upper lobe longer; third anal spine very 

 long, much longer than second, 1* in head; pectoral 1^ in head; ventral li 

 in head. Color bright orange, deepest at base of dorsal; head and nape 

 abruptly black to level of lower point of eye; below this point reddish 

 •pearly; breast and lower jaw nearly white; preorbital bones paler than 

 cheeks, which are mottled with brownish ; median region of top of heaid 

 paler; pectoral slightly dusky; dorsal and anal colored like body; last rays 

 of anal with a large black blotch, vertically oblong, its longest diameter a 

 little greater than diameter of eye ; not ocellated as in F. longirostris; soft 

 rays of dorsal and anal blackish at tip, the very edge pale; caudal abruptly 

 blackish. 



This species is extremely close to F. longirostris, which is common in the 

 East Indies. The American species differs, however, in the deeper body and 

 much larger anal spot, which is almost round in the East Indian species. 

 This species belongs to the new genus Forcipiger, of which Chelmon longi- 

 rostrin Cuv. & Val. may be taken as type. Fotir specimens from Clarion 

 and Socorro islands; one specimen from San Bcnedicto Island. Length, 

 from 5 to 7 inches. Type No. 5709, L. S. Jr. Univ. Mus., Clarion Island. 



43. Chaetodon nigrirostris (Gill). Six specimens from San Benedicto, Socorro, and 



Clarion islands; largest about 6 inches long. 



44. Holacanthus clarionensis (Gilbert). Eighteen specimens from Clarion and 



Socorro islands. A very young example from Clarion Island may be thus 

 described: D. xiv, 17; A. iii, 18; head 4i in total length; depth 2i; pec- 

 toral equal to head; interorbital space equal to eye; eye 3 in head. Color 

 in alcohol, very pale yellow; two parallel dark-brown bands passing verti- 

 cally from near lower edgeof preopercle to occiput, one on each side of eye, 



