1887.] NATURAL SCIENCES OF PHILADELPHIA, 387 



DESCEIPTION OF TWO NEW SPECIES OE FISHES FROM 

 SOUTH AMERICA. 



BY DAVID STARR JORDAN. 

 Cristiceps eigenmanni, sp. nov. 



Head 4 in length to base of caudal ; depth 4. D. III-XXIX, 2 : 

 A. 27 or 28. Scales in lateral line about 80. Type No. 12556 

 M. C. Z. 



Body rather stout, compressed. Eye nearly twice as long as the 

 sharp snout. Maxillary reaching to about opposite front of pupil. 

 Tentacle on top of head small, shorter than pupil. Hook on shoul- 

 der-girdle obsolete, the structure as in Labrosomus. First dorsal 

 rather low, scarcely joined to second ; soft dorsal of two very evident 

 soft rays. Scales very small. Pectoral a little shorter than head. 

 Color (in spirits) brown, much mottled, some dark cross-bars espe- 

 cially distinct on dorsal and anal ; five of these on second dorsal, 

 one on first dorsal, one on base of caudal, six on anal. Caudal and 

 pectorals pale, finely barred. No dark ocellus on dorsal or anal. 



The type of this species, 2* inches in length, was dredged by the 

 Hassler, off" Bermeja Head in Northeastern Patagonia (Lat. 41 

 17m. S : Long. 63 W). It is in good condition, and it is numbered 

 12556 on the register of the Museum of Comparative Zoology. I 

 have named the species for my former assistant, Mr. Carl H. Eigen- 

 mann, who has contributed a good deal to our knowledge of the 

 fishes of tropical America. 



The species resembles Auchenopterus (Cremnobates) marmoratus, 

 but the scales are much smaller than in Aucheiiojoterus. 



Mycteroperca xenarcha. sj). nov. 



Head 2f in length to base of caudal ; depth 3. D. XI. 16. A. 

 Ill, 11. Scales 110 to 115. Length of specimen especially de- 

 scribed (24198, Museum of Comparative Zoology, from James Island, 

 Galapagos) seven inches. 



Allied to 3fycfe7-02)erca bonaci and Mycteroperca falcata. 



Body rather deep and compressed ; head compressed, with rather 

 short, sharp snout, which is 4-J in head ; profile depressed above eye. 

 Mouth large, the maxillary reaching beyond eye, 2to in head. Low- 

 er canines small ; upper canines (two in number) strong, scarcely 

 directed forward. Eye small, 62 in head. Preorbital narrow, f 

 width of eye. Interorbital area flattish, its width 6 in head. Nos- 



