ADDENDA ET CORRIGENDA. 655 



the eye ; cleft of the mouth slightly oblique, with the jaws equal 

 anteriorly, and with the maxillary extending to below the middle of 

 the eye. Teeth in viUiform bands, the anterior of the lower jaw 

 slightly enlarged ; there are two small curved canine teeth on each 

 side of the lower jaw. Dorsal fins rather low, the hind part of the 

 spinous dorsal being scarcely lower than the anterior ; caudal round- 

 ed, as long as the pectoral ; none of the pectoral rays silk-like ; 

 ventral rather short, terminating at a great distance from the vent. 

 Blackish, fins and sides of the head dotted with black ; ventrals 

 black. 



West coast of Central America. 



a~h. Collected by Captain Dow ; presented by Dr. P. L. Sclater, 

 Seer. Zool. Soc. 



The largest of the specimens examined is two inches long. The 

 species has such peculiar characters that it will be readily recognized. 

 It has no natural affinity to the other small-scaled Gobies, which 

 generally have an elongate form. 



Page 79. Add a new species :• — 

 2. Euctenogobius sagittula. 



D. 6 1 13. A. 14. L. lat. 58. 



Twenty longitudinal series of scales between the dorsal fin and the 

 anus, twelve between the anterior portion of the second dorsal and 

 the anal. The height of the body is one-eighth of the total length, 

 the length of the head five times and two-thirds. The head is as 

 high as broad, its width being somewhat more than one-half of its 

 length. Eyes very close together. Snout obtuse, shorter than the 

 eye, the diameter of which is one-fourth of the length of the head. 

 Cleft of the mouth slightly oblique, with the jaws equal anteriorly, 

 and with the maxillaiy not extending to below the centre of the eye. 

 Head naked ; scales on the nape and behind the axil very small, be- 

 coming larger posteriorly. The second dorsal spine is the longest, 

 somewhat lower than the body underneath, but higher than the soft 

 dorsal ; caudal rather elongate and pointed, two-ninths of the total 

 length. Pectoral shorter than the head ; the ventral terminates at a 

 great distance from the vent. Light greenish-olive, with a series of 

 four brown spots along the middle of the tail ; sides of the head 

 with some irregular blackish-violet blotches ; dorsal, caudal, and pec- 

 toral fins dotted with black, ventral and anal immaculate. 



Western coast of Central America. 



a. Thirty-one lines long. Collected by Captain Dow ; presented by 

 Dr. P. L. Sclatei', Seer. Zool. Soc. 



This species has another series of very small teeth within the 

 maxillary front series ; these internal teeth do not appear to be fully 

 developed, but destined to replace those in function. The teeth of 

 the lower jaw form a very narrow band anteriorly, and stand in a 

 single series posteriorly. 



