1G8 Mr. E. A. Smith on Mulhisca from ihe 



intus incrassatnm et denticulatum ; columella supra arcuata, infra 

 obliqua, in medio plica unica iiitrante raunita, callo albo indnta. 



Loiij^-it. oo mm., diam. 12"o ; apertura cum canali 14 longa, 5 lata. 



Operculum unguiforme, fusco-corneum. 



Hub. Station 33:?, Gulf of Manar, 401 fath. 



The longitudinal costfje aie not very thick and do not vary 

 much iu stoutness, and tliey are crossed by the spiral sulci 

 or striae, which are about eight in number on the penultimate 

 Avliorl. The periostracum is rather thick and longitudinally 

 striated with the lines of growth. The denticles within the 

 labrum are six or seven in number, and from them faint 

 lirse run inwards. The fold on the columella is peculiar and 

 forms a prominence at the middle. It is somewhat oblique, 

 but how far it is continued up the columella I cannot say, as 

 only a single specimen is at hand, and that is too precious to 

 break up. Named in honour of ]\Ir. Edgar Thurston, of the 

 Madras Museum. 



Troplion [Boreutrophon) planispina, sp. n. 



Testa fusiformis, alba; spira elongata, turrita ; anfractus 10?, 

 superiores abrupti, ca;tcri supra dec-lives, in medio aiigulati, infra 

 contracti, longitudinaliter lamellati, lamellis appressis, ad angulura 

 spinas plauas sursum inclinatas t'ormantibus ; anfr. ultimus antice 

 rostratus ; apertura alba irregulariter triangularis, cum cauali 

 longit. totius ^ subtequans ; labrum tcnue, ad angulum canalicu- 

 latura ; columella contorta, supra arcuata, callo teiiui induta; 

 canalis baud rectus, leviter recurvus. 



Longit. 37 mm., diam. 25 ; apertura cum canali IS longa, G lata. 



Hab. Station 327, W. of Burmah, 419 fath. 



Very like T. carduelis, Watson *, from off Sydney in 

 410 fath., but with a longer spire and compressed or flattened 

 spines at the angle of the whorls. The lamellre which form 

 the spines are quite closely appressed to the shell, whereas 

 in carduelis they stand away quite free from the general 

 surface of the whorls. A very similar form, T. actinophorus, 

 Dall, occurs in the West Indies in 140-248 fath. 



Murex axicornis, Lamarck, var. 



Murex axicornis, Lam. ; Smith, Ann. & Mag. Nat. Hist. 190-1, vol. \iii. 

 p. 462. 



Hab. Andaman Is., 53 fath. 



* ' Clinllonger ' Gasteropoda, p. 107, pi. x. lig. 7. 



