1 ji; CALIFOKNIA Al'ADKMY OF SCIENCES 



il.uk l)ro\vn sjxit at l>,isi', those so inarkt-il forming rallier ik'tinitc- lar^v prouiis, whidi corrcspoiul on 

 the two siiles of the lish. A series of four such ^rou|>s, separated hy narrow inters|)aces, lie alonj; llie 

 lower half of the sides. Behind the eye, are three or four narrow wa\y dark lines, the lower two 

 ioinetl more or less l>y irre.ijular cross-branches. A faint ilusky streak runs forward from eye to snout, 

 a faint sjiot Ik-Iow the eye, anil a well marked horizontal ilusky streak on lower ])art of checks, turninjj 

 downward and Ixickward across preopercle. A narrow brown streak runs ilown«anl and backward 

 across prepectonil area, but fails to reach the median \'entral line. 



Spinous ilorsal dusky, a small bl.ickish blotch at lip of membrane between first two spines. A 

 very conspicuous elliptical jet-black spot on bas;\l jiortion of first four rays of the soft dor.sal; the spot is 

 faintlv ocellated with whitish, above this a faint curved dusky streak, then the translucent mariiin of 

 the tin. Hehinil the spot, the ilorsal is markeil with oblique cross-bands of ilusky and whitish. The 

 caudal ap|Xfars uniformly dusky. The anal is dusky, with a narrow translucent marj^in. The sijine 

 and outer ventral ray are dusky, the rest of the fin whitish. The pectorals are iinifi irmly tr.insluccnt. 



Named in honor of Richiird C McCJregor, a member of tli<! exp(Mlitioii to 

 Panama, to the success of which he materially coiitriljuteil. 



271. Halichaeres dispilus (Oiinther). 



The types came from Panama, where the species was also secured hy the 

 Alhatro.ss (Jordan & BoUman, 1889, p. 182). It has been reported also from Aca- 

 pulco and INIazatlan. 



272. Pseudojulis notospilus (i anther. 



Tlie dark bands across the back are in tiic number of 8, the first being on the 

 nape, the eighth on the caudal j^eduncle. Those in front of the soft dor.sil become 

 progressively fainter, the anterior three, and the one on caudal peduncle, commonly 

 di.sap[iearing in adults. 



The species is very abundant in all rock-])Ools about Panama. 



273. Thalassoraa lucasanum {(Jill). 



This species has been recorded from Panama by Gilnther (18G4i, p. 20) 

 without comment. It has not been obtained there by other investigators. 



Family SCARID^. 

 274. Pseudoscarus perrico {Jordan <.t- Gilbert). 



Occasionally taken about the rocky islands in Panama Bay. Five specimens 

 were secured, ranging in length from 23 to 38 cm. The adipose hump on top of 

 head is variable in its development among individuals of the same size. Our si)eci- 

 mens are eviscerated, so we are unable to determine whether the development of the 

 hump is dependent on sex. 



The following color-notes were taken from a fresh specimen 263 mm. long: 

 Scales on body with the central portion blue, surrounded by brown. Under parts 

 whitish. A wedge-shaped blue spot immediately behind the eye; 4 narrow blue 



