370 R. S. CLARK. 



on a level with the upper, but the chin projects, while the curve of the 

 mouth is even more pronounced than in the previous specimen. The 

 dorsal interspines have reached beyond the mid brain, and in line with 

 a vertical through the middle of the orbit. 



The pigment is much as in the previous specimen, with the barred 

 areas forming a distinct feature. The spinal chord is marked out above 

 and below by a continuous row of small dashes, while across the base of 

 the caudal fin the chromatophores appear to be arranged into another 

 small transverse bar. 







■ ■• v\ V 





^{^""^ 



Fig. ^.—Solca lascaris. Length 9'5 mm. Oithona Station, XCVIII. A. Sath Aug., 

 1913. Total depth 36 fms. Midwater haul. 

 Del. E. Ford. 



Length 10 mm. The preanal and post-anal lengths show the same 

 proportion as in the previous specimens. The snout is also longer than 

 the diameter of the eye. 



Fin formula D 89. 

 A 71. 

 Vertebrae 9+38=47. 



The concavity of the snout is still well marked, though not quite so 

 markedly V-shaped. The left eye has begun to migrate. The inter- 

 spines have advanced beyond the vertical from the anterior margin of 

 the left orbit, which is slightly in front of the right. The brain has re- 

 ceded, and the anterior margin of the mid brain overlies the middle of 

 the right eye. 



There is practically no difference in pigmentation from the last 



specimen. 



Fig. 10. Length 11 mm. 



Metamorphosis has gone a stage farther. The left eye is almost clear 



of the right, but has not yet reached the dorsal surface. The snout is 



more or less " hooked," with the lower arm of the V-shaped concavity 



