5o4 SKALE. 



enlaiged canines; tlie orbital i-Jdgos are not jjioniinently developed nor 

 roughened. No filiform rays to pectorals, no barbules. (.iill openings 

 confined to sides. The origin of dorsal is midway between tip of snout 

 and seventh dorsal ray, none of the spines elongate, the longest about 

 1.50 in head, longest dorsal lay 1.40 in head. Caudal acuminate, about 

 one-third longer than head, longest anal ray 1.30 in head, pectorals almo-l 

 equal to length of head. 



( 'olor in life yellowish while, marljleil and mottled with brown and 

 giayish. Three inrgiilar-shaped oblique dusky bands backward and down- 

 v.aril. one from spinous dorsal, two from soft dorsal; some dusky stripes 

 on sides of head, (Hie from snout to eye, another from eye to upper margin 

 of ojiercle, another from posterior margin of eye obliquely backward, Iw" 

 others on lo\\'er sides of checks. Dorsal yellowish \\'ith dusky blotch in 

 lower central portion and some other slight shadings of dusky scatteied 

 over the fin. Soft dorsal with about three oblique dusky bars, the middle 

 one most distinct, ])Osterior tip of fin dusky. Caudal yellowish gray with 

 three dark bands triangular in shape, the angle pointing backward. Anal 

 yellow with three dusky oblique bars, posterior tip of fin dusky. Yentrals 

 pinkish with slight blotches of dusky. I'eetorals yellowish, a du-ky 

 irregular bar running out on upper half of fin. 



Color in alcohol. Similar to above but with the brown i^iarkings 

 showing more distinctly, there being a dusky bar on sides of belly and 

 another at origin of anal. A brown bar across nui/hal region, a distinct 

 brown bar obliquely downward and backward from I've, another in front 

 of eye, and three on lower part of cheeks, fins colored as in life. 

 ■ Type is No. 3575 from Jolo, Jolo Island, P. I. Length, .51 millimeters. 



Rhinogobius perpusillus Siiilc sp. nov. 



Head 3.85; depth 4; dorsal VI, 11; anal 14: scales 5G, about SO in 

 vertical series; eye 3.85; snout 4; interorbital about equal to snout; 

 maxillary 2.75 in head, its tip under anterior margin of pupil; mandible 

 2.30. Head naked e.\ee])t about 3 rows of scales on upper third of opercle, 

 nuchal region finely scaled. No filamentous pectoral rays. 



Body somewhat oblong and compressed, the upper and hjwer outlines 

 about equally curved, the depth of caudal peduncle 2 in head. The 

 head is rather bluntly pointed, the median width of snout being about 

 equal to its median depth. The mouth is oblique, the lower jaw slightly 

 longer. The tongue is rounded and adnate to floor of mouth. Teeth in 

 upper jaw in two i-nws those of the outer row enlarged, curved, those of 

 lower jaw in two rows rather large, curved, the outer ones projecting; an 

 enlarged, recurved canine on side of jaw, no teeth on vomer or palatine. 

 Gill openings small, restricted to sides. Body and nuchal region covered 

 with fine scales which are slightly roughened at their margins. Origin 

 of dorsal is midway between tip of snout and base of fourth dorsal ra}', 

 its spines not elongate, the longest 3 in head, longest dorsal ray 1.50. 



