171 fAI.IFOliS'lA AfADKMV OF SCIENCKS 



III this species, as in Oannannia parndoxa, we fail to fiiul tlu' "'J small curved 

 canine leeth on eacli side of lower jaw." The mandible contains a broad bund of 

 rather coarse villiforni teeth, with an inner and an outer scries of cnlari^cd canines. 

 The upper jaw is similar, but contains no enlarged inner series. 



None of the dorsal spines are filamentons or elongate. They are constantly 

 seven in number, the last two much more widely spaced than the prcceiling five. 

 The last meiiibrane joins the base of the first soft ray. 



The head is large, witli swollen cheeks and a bliiiiL nuse. Its length is con- 

 tained 3J to 3| times in length to base of caudal, 3;,' to 3| times in total length. The 

 greatest depth of body is contained 4J times in length to I)ase of caudal, oj in total 

 length, in a female; 4;^ (05) in a male. 



In females, the body is obscurely cross-banded, a horizontal black line on 

 each bar along dorsal outline, and another where each crosses middle line of sides. 

 The soft dorsal and caudal are coarsely speckled in cross-series; a i)lack bar at base 

 of upper and one at base of lower caudal rays. A conspicuous black blotch at base 

 of upper pectoral rays. Males are much darker than females, the fins all blackish 

 and without cross-barring, the bars on sides little evident. 



The normal fin-formula is D. VII, 15; A. 11. In fifteen specimens examined, 

 all contained 7 dorsal spines, thirteen contained 15 dorsal rays (one had 12, and one 

 16 rays), fourteen contained 11 anal rays (one had 10 rays). 



There is nothing in the squamation to distinguish this species generically fioni 

 Gobius. The genus Eaypnias may be based upon the 7 dorsal spines and the pair of 

 mental barbels. 



315. Bollmannia chlamydes Jordan. 



Only the types known, from Albatross Stations 2800, 2802, 2803, 2804, 2805, 

 Panama Bay, depths 7 to 51 .V fathoms. 



316. Aboma lucretiee {Eigenmann <£■ Eigenmann). 

 Only the type known, from Pearl Island, Bay of Panama. 



317. Microgobius emblematicus {Jordan & Gilbert). 

 Microgobius cydolepis Gilbert, 1891, p. 74. 



About thirty specimens were secured in tide-pools on the Panama reef. 



In spirits, the coloration is largely lost, the fish having the translucent oliva- 

 ceous cast so characteristic of the typical members of this genus. On the back, along 

 the base of the dorsal fins, are more or less distinct traces of five elongate dusky 

 blotches, the intervals between which are narrower than the eye. Most .specimens 

 show a distinct, vertically oblong black humeral spot. The fins are translucent 

 dusky, darker in males, in some of which the ventrals and anal are black. The 

 spinous dorsal has occasionally one, or several, lengthwise series of small dark spots, 

 one for each spine. The red streak on caudal is often represented by a pale line 

 traversing obliquely the dusky fin. For the coloration in life, we can refer to the 

 original description. 



