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PROCEEDINGS OF THE NATIONAL MUSEUM 



VOL. 82 



conspicuously enlarged to form tiny flaps. Three transverse rows of 

 papillae under eye and a fourth on cheek behind eye. A few short 

 rows radiating from eye. One lengthwise row nearly at middle of 

 cheek extending for a short distance from upper lip. Two rows 

 along lower jaw, extending upward along posterior margin of pre- 

 opercle, the inner row conspicuously enlarged, as stated. A trans- 



FiQUKE 2.—Qobulu8 CTCscentalit (Gilbert), from the type specimen 



verse row along anterior margin of opercle, and two short lengthwise 

 rows on opercle. A series of short transverse rows along middle 

 of body. 



Color. — Ventral aspect of fish darker in color than upper part. 

 Lower half uniform cocoa brown, the rather coarse chomatophores 

 being evenly distributed. Upper half Ughter, yellowish blotched with 

 brown, the yellowish ground color forming a series of more or less 

 diffuse, vertically elongate, light-colored areas. Caudal with a brown 



FiQURK 3.— A ventral view of Oobulus crescentalig (Gilbert) showing the ventral disk. Note the 

 absence of an interspinal membrane. The two ventrals are disconnected distally, the interradial 

 membrane, most probably, being torn 



crescent-shaped band, near to but a little removed from its base; the 

 upper end of the band narrow, the lower end broader and merging 

 with the pigment of the caudal peduncle. The two specimens from 

 Agua Verde Bay are darker than the type; they have the dark 

 crescent on the caudal wider and somewhat merging posteriorly with 

 the diffuse pigmentation of the rest of the fin; and they also show a 



