150 



BULLETIN 150, UNITED STATES NATIONAL MUSEUM 



coeca 40. Eye 5.5; snout 2.7; gill opening 7; disk 3. Snout cleft 

 on the lower surface as in the type, projecting beyond the upper lip 

 for a distance nearly equal to eye. Teeth trUobed, arranged in seven 

 oblique rows in the half of each jaw. The pupil resembles that in 

 C. cyclospilus, elliptical, horizontal, partially divided from the dorsal 



FiGUBE 75.— Crystaluchthys mtrabius. Teeth from type 



side. Distance from tip of lower jaw to disk 3.3 in the head. Pores 

 2-5-6-1. Body translucent; body, head, and fins with short, narrow, 

 pale bars and small roundish spots; a bar extending forward from eye 

 and one above eye; the bars and spots, probably, pinkish in life, 

 shaped somewhat as in Crystallias matsushimae. No notch between 

 d»rsal and caudal; caudal slightly rounded. 



/I A A 



Figure 76.— Crystaluchthys mirabilis. Teeth from a young speci- 

 men FROM Albatross Station 4797, off Kamchatka 



Genus CRYSTALLIAS Jordan and Snyder 



Crystallias Jordan and Snyder, 1902, Proc. U. S. Nat. Mus., vol. 24, p. 349. 



Disk present; nostril single; teeth ti'ilobed; suprabranchial pore 

 single; pyloric coeca present; pseudobranchiae absent; branchiostegal 

 rays 6; snout with barbels. 



Genotype . — Crystallias matsushimae . 



CRYSTALUAS MATSUSHIMAE Jordan and Snyder 



Crystallias matsushimae Jordan and Snyder, 1902, p. 350, figure 2. — Schmidt, 

 1904a, p. 167, pi. 6.— Jordan, 19055, p. 218, figure 158.— Gilbert and 

 Burke, 19126, p. 376. 



