260 PROCEEDINGS OF THE ACADEMY OF [1889. 



caudal ; width of caudal base 3 in base of dorsal, its longest rays 1£ 

 in base of anal and but little shorter than those of pectorals; 

 ventrals narrow, long, reaching to lower insertion of pectorals; which 

 are broad, width of base 1} in longest rays, which reach to the vertical 

 front of dorsal. Color blackish above, sides chocolate, belly yellow- 

 ish covered with very small brown specks; throat white; chin and 

 naked space on top of head black ; ventrals white ; pectorals black ; 

 dorsal brown, with irregularlv mottled base and tipped with white; 

 anal white anteriorly with brown specks, posteriorly darker from 

 the greater number of specks, black blotch between 9th and 10th 

 rays; caudal white, irregularly blotched with black. Head 2 1 in 

 length; depth 4; D. 13; A. 13; length 4'» inches 



AVERRUNCUS, J. 



1. Kathetostoma averruncus. 



Kathetmtoma averruncus Jordan and Bollman, Proc. U. S. Nat. 

 Mus. 1889 (Pacific Coast of U. 8. of Colombia). 



Habitat. — Pacific Coast of Northern South America. (8° 57' N. 

 79° 31' 30" \V.) 



Etymology. Latin, a protecting deity, from a word meaning to 

 keep off, in allusion to the defensive armature of the head. The 

 single specimen, the type of this species, was dredged by the steamer 

 Albatross, between Panama and the Galapagos. 



URANOSCOPUS. 



Uranoscopus Linnaeus, Syst. Nat. I. 250, 1758 (seaber). 



Callionymus Gronow, Syst. ed. Gray, 43, 1854 (araneus) (not of 

 Linnaeus). 



Type. Uranoscopus seaber Linnaeus. 



Etymology. Ouranos, the sky ; skopds, looking. 



This genus includes some 11 species, all of them, so far as certainly 

 known, confined to the' Old World, although but one is found in 

 Europe. 



Analysis of European species of Uranoscopus. 



a. Pectorals large, base two in their longest ray, which is equal 

 in length to caudal and extends to beyond front of second dorsal ; 

 ventrals small, their length 1=] in that of pectoral, and extending to 

 lower insertion of that fin ; spinous dorsal small, first spine four in 

 length of base, which is four in length of second dorsal; membrane 

 of first dorsal extending beyond and concealing the spines; second 

 dorsal and anal equal and opposite, each other, the latter reaching 

 to base of caudal ; vent midway between snout and base of caudal. 



