34 



PROCEEDINGS OF THE NATIONAL, MUSEUM 



TOL. 79 ! 



under pupil ; minute teeth in bands in each jaw ; caudal peduncle ■ 

 long and slender, its least depth 3 in its length ; scales large, weakly 

 ctenoid, absent from head and from body anterior to first dorsal, 



8 rows of scales in transverse series below origin of second dorsal, 



9 scales around narrowest part of caudal peduncle. 



Fins: Dorsal fins widely separated, the interspace greater than 

 length of base of first dorsal; dorsal rays V-I,8; spinous dorsal 

 low, the spines close together, the first spine longest and about equal 

 to snout and eye, the other spines progressively shorter, the last 0.75 

 eye; second dorsal much elevated, its origin nearer to base of caudal 

 than to eye, the first ray equal to postorbital part of head, the first 

 branched ray longer than spine and equal to body depth at dorsal 

 origin, the rays becoming gradually shorter, the last ray as long as 

 the last dorsal spine; caudal broad, its posterior edge straight and 

 vertical, the length along axis of body equal to height of second 



FiGDRE 16. GOBIELLA PELLDCIDA 



dorsal and greater than postorbital part of head; anal rays 1,11, 

 the fin similar to second dorsal, but the rays slightly shorter and 

 base slightly longer and its origin posterior to that of second dor- 

 sal ; ventrals 2 in head, forming a deep cup ; pectorals broad, bluntly 

 pointed, their length equal to longest anal ray, their tip reaching 

 to a point halfway between the dorsal fins. 



Color : White, translucent ; a few irregularly disposed small round 

 black spots on sides and abdomen; a row of minute black spots at 

 base of anal; fins hyaline. 



Types. — Numerous specimens taken on May 9, 1929, in Bangkok, 

 Central Siam. Cat. No. 90312, U.S.N.M. 



Remarks. — This diminutive goby has as yet been found only in 

 Bangkok, but may doubtless be looked for anywhere in lower Central 

 Siam. Its only known habitat is a small canal or ditch and a small 

 pond, in the grounds of the Department of Fisheries ; the pond and 

 canal are ultimately connected with the Menam Chao Phya. The 



