386 BULLETIN 189, UNITED STATES NATIONAL MUSEUM 



lations," if Reid (1943, p. 378), who presumably had a paratype be- 

 fore him, had not repeated the description in his key without modifi- 

 cation. Finally, no mention is made of a black line or streak along 

 the base of the anal, which is conspicuous in the specimens now at 

 hand. 



Range. — Known only from the type material from Mazorka Island, 

 Huaura Group, Peru. 



OPHIOBLENNIUS XIPHIODON Clark 



Ophioblennius xiphiodon Clark, 1938, p. 183, Callao and "Chinchas," Peru, and 

 Valparaiso, Chile (original description; compared with 0. pinchoti Fowler; 

 holotype from Callao). — Reid, 1943, pp. 374 (key), 380 (reference; notes). 



No specimens are at hand. The following proportions and enu- 

 merations, based on the type, a specimen 44 mm. long, were copied 

 from the original description: Head in length 3.6; depth 4.5. Eye in 

 head 3.3, snout 4.0; interorbital 5.0; maxillary 3.3. D. XII, 16; 

 A. 17; branchiostegals 6; vertebrae (not based on type) "about 

 10+20=30." The teeth were described as follows: "A row of mi- 

 nute teeth attached loosely in bunches back of the lips and freely 

 movable; four strong, curved canines near symphysis of lower jaw, 

 and four smaller ones in upper jaw." The description of the color 

 states: "Top of head dusky, spinous dorsal punctulate, a series of 

 square, minutely punctulate blotches, about 10 in number and some- 

 what wider than the interspaces, each side of middorsal line; a very 

 narrow bar of minute dots across base of caudal; anal, soft parts of 

 dorsal, and ventral plain; pectoral black, tipped with coarse punctu- 

 lations. All the specimens have the same general color pattern, but 

 some are paler, some darker, and some have additional small, dusky 

 blotches along the middle of the side." 



The relationship of this species and 0. mazorkae cannot be definitely 

 determined, though the two probably are closely related, as indicated 

 in the descriptions and more particularly by the comparisons made in 

 the account of 0. mazorkae. 



Range.- — Known only from the type material from Callao and 

 "Chinchas" (presumably Chincha Islands, Peru, and from Val- 

 paraiso, Chile. 



Genus SCARTICHTHYS Jordan and Evermann, 1898 



Body elongate, compressed; head short, anteriorly steep, straight 

 to more or less rounded; eyes lateral, placed high; interorbital nar- 

 row; gill membranes free and continuous across isthmus; branchio- 

 stegals 6; mouth horizontal; upper jaw semicircular in outline; lower 

 jaw included; lips free, covering the teeth; teeth implanted in the 

 gums, movable, in a principal close-set series, with shorter, largely 

 hidden, widely spaced teeth on outside, present in at least some spe- 

 cies; a posterior canine in lower jaw usually (if not always) present; 



