moxolenp: dubiosa. 227 



Vent and genital aperture on the blind side, a short distance from the edo-e. 

 Scales small; those on the loft side are ctenoid, tlie comb being of exceeding 

 fineness; tliose on tlie right side are cycloid ; and tliose on the head are 

 smaller and extend forward to the nostrils and to the mouth. In addition 

 to the scales counted on the lateral line the series contains several on the 

 base of tlie caudal. 



Dorsal descending on the right side of the head to the origin of the fin 

 near the nostrils ; base terminating opposite the end of the base of the anal, 

 close to the base of the caudal. Anterior rays of dorsal and anal shorter, 

 protruding beyond tlie mendjrane. Anal origin slightly in advance of the 

 base of the pectoral ; no anal spine. Ventrals small, of six rays, that of the 

 left side about one ray in advance ; a strong compressed pelvic spine. Pec- 

 toral little more than half as long as the head ; no pectoral on the blind side. 

 Basal portions of the fin rays scaly. 



Left side a clouded brown, darker along the lateral line ; caud:,* 'ackish 

 in the hinder two thirds; pectoral light brown at the base and black in the 

 greater portion of the length with several obliquely jdaced more or less 

 elongate spots of white; right side colorless, except where the brown pig- 

 ment shows tlu'ough the fins. Young specimens are much lighter and show 

 a black streak along the inner ends of interneurals and interhjemals. One 

 at hand has small spots of darker scattered over the body; it has the hinder 

 half of the caudal blackish, the anterior half of the pectoral white, and the 

 posterior half of the pectoral black with a white spot in the middle. Largest 

 specimen seven inches in length. 



Monolene dubiosa sp. n. 



D. 82 ; A. 63 ; V. 6 ; R 12 ; LI. 83 ; Ltr. 21 + 28. 



Sinistral, broadly rounded in the anterior profile witli a shallow indenta- 

 tion above the nostrils, much compressed, depth three eighths of the total 

 length. Head one fourth of the entire length, without conspicuous angles. 

 Snout shorter than the e_ye, blunt, much less prominent than that of M. mor 

 cuUpiima. Eye small, one and one half times the length of the snout, nearly 



