328 GOBIES OF THE PHILIPPINES 



is particularly ambiguous. In his Esquisse Bleeker evidently 

 defined some of the genera without having examined the teeth, 

 although he based his divisions primarily upon the dental 

 characteristics. It seems to me that the genera of the Gobi- 

 oididae should be based upon the character of the teeth, the fins, 

 and the eyes. Unfortunately, authors in general have given 

 the teeth scant attention, anything from one to many rows being 

 described as a "band of fine teeth" when they are not the outer 

 row. 



In the following key are given the genera that by reason of 

 some outstanding character cannot be questioned, and also those 

 that I have studied and defined for the purpose of this work; 

 the omitted genera need to be revised by some one with access 

 to type material. 



Key to some genera of the family Gobioididx. 



a 1 . Dorsals separate Trypauchenopsis. 



a*. Dorsal continuous. 



b 1 . Ventrals separate; eyes large -- Paragobioides. 



b 2 . Ventrals united; eyes small to minute. 

 c 1 . No true canines. 



d l . One row of teeth in each jaw Tyntlastes. 



d*. Two or more rows of teeth in each jaw, the outer row enlarged. 



e*. Two rows of teeth in upper jaw, two or more in lower jaw; 



small to minute scales present, at least at base of caudal; no 



barbels Brachyamblyopus. 



e*. More than two rows of teeth in each jaw; body naked; barbels 



present on chin Taenioides. 



c 2 . A pair of stout canines behind symphysis of lower jaw. 

 f. Two rows of teeth in each jaw ; pectoral long, pointed, equal to or 

 longer than head; caudal very long, pointed; ventrals large, 

 long, pointed; at least posterior half of body ribbonlike. 



Sericagobioides. 



The genus Trypauchenophrys Franz is unquestioned, but as 

 I have been unable to obtain a copy or an abstract of his paper 

 I cannot group it with the preceding. 



Genus 72. BRACHYAMBLYOPUS Bleeker 



Brachyamblyopus BLEEKER, Arch. Neerl. Sci. Nat. 9 (1874) 329. 



The teeth in two to several rows in lower jaw, two rows above, 

 the outer row in each jaw enlarged, long, pointed, inward-curved, 

 fixed or depressible, without true canines and without postsym- 

 physial canines in lower jaw. The body elongate, laterally 

 compressed, the depth 7 to 10 times in length, the head com- 



