394 SNODGRASS AND HELLER 



colors, however, would seem to indicate that one color replaces the 

 other during the life of the individual. All grades from black to 

 orange found at the same time of the year and at the same place. 



114. PIMELOMETOPON DARWINII (Jenyns). 



Cossyphus darwhiii JK^Y'ns, Voy. Beagle, Fishes, 100, pi. 20, 1842, Chatham 



Island, Galapagos. 

 Za<5rz^5 «/^r Valenciennes, Voy. de la Venus, ZooL, Poiss., 338, pi. 8, fig. 



I, plates 1846, text 1855, Galapagos Islands. 



Pitneloinetopon darwinii, Jordan & Evermann, Fishes North and Mid. Amer. , 



II, 1586, 1898. 



Range. — Galapagos Archipelago. 



Of this species we have 8 specimens from Tagus Cove and Eliza- 

 beth Bay, Albemarle Island. 



Description of an adult male : Length 420 mm. ; head 3 ; depth 3 ; 

 eye 7 in head ; profile of head from eye to tip of snout very steep, 

 rising at an angle of 45 degrees ; lower jaw large, thick, regularly 

 rounded in ventral profile, so that snout and lower jaw are very blunt ; 

 profile of head above eye to first dorsal spine gently rising, frontal 

 hump present, but although large, not forming a prominent and abrupt 

 swelling; body deepest through middle of pectoral; back of this 

 regularly and symmetrically decreasing in depth to middle of caudal 

 peduncle, back of middle of caudal peduncle enlarging again slightly ; 

 dorsal XII, 10; third to sixth rays of soft dorsal elongated, reaching 

 to posterior third of caudal peduncle; anal III, similar in shape to 

 soft dorsal; caudal lunate, upper rays the more produced (not equal 

 as in Valencienne's figure) ; pectoral wide ; outer rays of ventral pro- 

 duced, about equal to pectoral, i-| in head; flap on lower lip small, 

 1^ of eye in depth. 



Color of male in life. — Above purplish-gray, below grayish-green ; 

 a large golden blotch on side behind opercle above pectoral ; tip of 

 lower jaw white ; fins light grayish olive. 



All of the males have the large yellow spot above the pectoral, and 

 the character remains well on specimens kept in alcohol, so that it 

 forms a very good distinguishing mark of the species. 



The females are much smaller than the males, the snout is pointed, 

 the soft dorsal and anal fins and the ventrals are not prolonged, and 

 the caudal lobes are generally equal (one has the U2:)per longer). 



Colo7- oj" females in life. — Following are the color descriptions of 

 2 females: (i) Ridge of back dark, sides reddish-purple, belly 

 grayish ; upper surface of snout blue-gray, chin whitish ; vertical fins 

 like back, ventrals like belly; iris purple. (2) Above light brownish 



