100 PROCEEDINaS OF THE NATIONAL MUSEUM. vol.54. 



inner row of the type was probably broken off in dissecting, or else 

 the pharyngeal teeth in this species are subject to variation. Since 

 the other species of Hemiharhus uniformly have three rows of pharyn- 

 geal teeth the first assumption is probably correct, 



RHINOGOBIUS SOWERBYI, new species (Gobiidae). 



D. VI, 9; A 9; Sc. 35-36/9-10. 



Body elongate, cylindrical anteriorly, compressed posteriorly. 

 Head depressed, longer than wide and wider than deep. Snout 

 blunt, rounded, gibbous. Mouth somewhat oblique, medium; 

 maxillary reaches to a vertical through anterior third of eye. Lips 

 thick, cheeks tumid. Interorbital space concave, about as wide as 

 horizontal diameter of eye. Teeth in three rows in each jaw, erect; 

 outer row somewhat enlarged, compressed, usually truncate, slightly 

 bent backward. Outer row extends to somewhat less than an eye 

 diameter before the angle of mouth, inner rows end considerably 

 before. Tongue entire, rounded. Anterior nostril with a very short 

 tube placed in a slight depression; it is almost but not quite on a 

 level with the lower margin of the eye, and is nearer the posterior 

 margin of the upper lip than the anterior margin of the eye. Posterior 

 nostril without raised border placed in front of eye and on a horizontal 

 through its middle. Cheeks, opercles, top of head, and nape, scale- 

 less and without raised muciferous papillae, the naked area extending 

 to a vertical thi'ough insertion of pectoral; 6-8 embedded cycloid 

 scales on dorsum before spinous dorsal. At the sides of the dorsum 

 directly over opercle two rows of embedded scales extend further 

 forward, to the cheeks. Belly entirely naked to origin of anal. 

 Scales on body well developed, imbricated; all are ctenoid and of 

 nearly the same size, except those on the dorsal aspect anterior to the 

 origin of the spinous dorsal. 35-36 scales from upper, posterior angle 

 of the opercle to base of caudal. 9-10 rows from origin of anal to 

 second dorsal, counting upwards and backwards. Gill openings 

 restricted; isthmus wide, the insertion of the gill membrane on the 

 isthmus on a vertical through about the middle of opercle. Outer 

 edge of shoulder girdle with neither a fleshy ridge nor papillae. 

 Pectoral fins with a scaleless, somewhat muscular base; the fins 

 rounded, reaching vent; the upper rays connected by membrane, 

 not silklike. Ventrals completely united, infundibuliform, the inter- 

 spinal membrane well developed, emarginate; the disk is broader 

 than long and reaches midway between its origin and vent. Dorsal 

 fins separated by a space about equal to diameter of eye. The fourth 

 spine the longest, about two in head, the second, third, and fifth spines 

 nearly as long as fourth, first spine considerably shorter, last spine 

 shortest. The posterior rays of second dorsal and anal longest; they 

 reach the base of the rudimentary caudal rays in the paratype, but 



