356 MESSES. MELVILL AND STANDEN ON [June 18, 



Scala (Opalia) lamellosa Lam. 



Scalaria claihrus L. Syst. Nat. xii. 1769, 1237. 



M.C. Charbar, and other localities, not infrequent. 



Var. 2^seudoscalaris Brocchi. 

 I. Karachi. Among seaweed, low-tide mark. 

 "We cannot separate this variety from Brocehi's Mediterranean 

 species. 



Scala (Opalia) consobs Crosse & Fischer. 



I. Bombay (Abercromhie). 



Some little doubt attaches to this name, the type being Australian, 

 but S. perplexa Pease seems identical ; this last is merged by Tryon 

 (Man. Conch, ix. p. 74) into a variety of S. lamellosa Lam., and 

 it would be perhaps best to treat S. consors likewise as subspecific 

 only. 



Scala (Am^ea) eaeicostata Lam. 



P.Cr. Gulf of Oman, Maskat. From 10 fathoms, coral-sand. 

 Small, but quite adult, examples. 



Scala (Clesoteema) ceassilabbum Sowb. 

 M.C. Charbar. 



Scala (Clesoteema) fimbeiolata Melv. 



P.G. Gulf of Oman. Two off Maskat, 10 fathoms, black mud. 

 One of these, constituting the most elegant and refined, perhaps, 

 of all the Mollusca collected by Mr. Townsend, is 52 mm. in length. 

 The whorls are not nearly so ventricose as in decussata Kien., and 

 the lamellae more delicately fringed. 



1. Karachi. Small, and not fully grown. 



Scala (Ciesotbema) hidetma Melv. 

 I. Karachi. 



Scala (Clesoteema)- kienebi Tapp.-Canefri. 

 Scalaria (Cirsotrema) decussata Kien. 

 I. Angrias Bank (Capt. IF. A. Tindall). 



Scala (Aceilla) acuminata Sowb. 



I. Karachi, 15 fathoms, very rare. Bombay (Abercromhie), 

 not infrequent, but fragmentary, in shell-sand. 



Scala (Aceilla) minoe Sowb. 

 Scalaria (Acrilla) gracilis A. Ad. non Sowb. 

 M.C. Charbar, 5 fathoms, mud. In colour of a darker brown 

 than is typical, lamellae more distant and fewer in number. 

 I. Karachi, 3 fathoms, among muddy stones. 



Scala (Constantia) standeni Melv. 



I. Karachi. Also in lat. 18°58'N., long. 71° 45' E. 40 fathoms. 



