2. ATHEKINICDTHTS. 403 



body is contained six times to seven times and three-fourths in the 

 total length, the length of the head six times. The diameter of the 

 eye is one-fifth or one-sixth of the length of tho head, less than the 

 width of the interorbital space, and not quite one-half of the extent 

 of the snout ; in very large specimens the eye is stiU smaller. The 

 silvery streak occupies the sixth, seventh, eighth, and the adjoining 

 half of the ninth series of scales. 

 Coast of Chile. Falkland Islands. 



a-b. Fine specimens. Salt water, Valparaiso. From Mr. Bridges' 



Collection. 

 c, d. One foot long. Falkland Islands. 

 e. Sixteen inches long ; has been in chloride of zinc. Port Louis. 



From the Haslar Collection. 

 /, g, h. Many specimens in a bad state. From the Haslar Collection. 

 i. Eighteen inches long : skin. From the Collection of the Zoological 



Society. 



3. Atherinichthys microlepidota. 



Atherina microlepidota, Jemjns, Zool. Beagle, Fishes, p. 78. pi. 16. fi^. 1 ; 



Gay, Hist. Chil. Zool. ii. p. 253. 

 Basilichthys microlepidotus, Girard, Proceed. Acad. Nat. Sc. Philud. 



1854, p. 198, and U. S. Naval Astron. Exped. South Hcmisph. ii. 



p. 238. pi. 30. figs. 6-9. 



D. 6 ] 11. A. 17. L. transv. 18-20. 



Fifteen longitudinal scries of scales on the tail, behind the anal. 

 The spinous dorsal commences above, or immediately behind, the 

 extremity of the ventral fin, and is nearer to the vertical from the 

 anal than to 'that from the base of the ventral. The height of the 

 body is one-fifth or one-sixth of the total length (in adult specimens), 

 the length of the head two-elevenths. 



Coast of Chile. Mapocho (tributary of tho Rio de Maypu). 



4. Atherinichthys nigricans. 



Atherina nigricans, Richards. Voy. Ereh. Sf Terr. Fishes, p. 77. pi. 42. 

 figs. 13-18. 



^' "^ I i^- ^- h' ^' ^^^- ^^-^^' ^- transv. 17. 



The spinous dorsal fin commences somewhat behind the vertical 

 from the base of the ventral. The height of the body is contained 

 eight times and a half in the total length, the length of the head six 

 times. The diameter of the eye is one-sixth of the length of the 

 head, and nearly one-half of the width of the interorbital space, 

 which is less than the extent of the snout. The silvery streak occu- 

 pies three series of scales. 



Falkland Islands. 



o. Type of the species : five inches long. 



It is very doubtful whether the black ground-colour is natural, or 

 has been produced by the fluid in which the fish was preserved. 



2d2 



