636 MR. G. B. SOWERBY, JTJN., ON NKW SHELLS. [May 17, 



Compared with C. terebellum, to which this species is alUed, it 

 is a smooth shell with a shorter spire. Having a single specimen 

 of C. thomasi some years ago, I had some thought of describing it 

 as a new species, but hesitated to do so on account of its proximity 

 to C. terebellum. Having now, however, seen several specimens, 

 and compared them with a large series of C. terehellum, I have no 

 difficulty in making the distinction. In the collections of the late 

 Mr. Thomas Lombe Taylor and Mr. Hopeley White there were 

 specimens of the species above described under the name of C. pasti- 

 naica (Lamarcli) — an error caused by Lovell Reeve having figured 

 and described under that name in the ' Conchologia Iconica ' 

 {Conus, fig. 257) a shell of somewhat similar appearance, but which 

 has been shown by Mr. Edgar Smith to have been a worn spe- 

 cimen of C. virgo, now in the British Museum. It is not known 

 what has become of the type of Lamarck's C. pastinaica ; but from 

 his description it would seem to have no affinity whatever with 

 Reeve's shell so named. 



The species which I have named in honour of M. Thomas of 

 Breste is represented in his collection by the specimen which I have 

 taken for the type. The other specimens which I have mentioned 

 are smaller, and have rather more of a bluish or faint lilac tinge of 

 colour. 



2. Conus prevosti, n. sp. (Plate LVI. fig. 3.) 



Testa elongato-cylindracea, lavi, infra sulcata, albida, aurantio 

 obscure fasciata, lineis numerosis minutis avrantiacis irregulariter 

 undulatis et angulatis scripta ; spira elata, gradata ; anfractus 

 superne leviter concavi, striis duobus spiraliter sculpli ; anfr. ulti- 

 mus superne angulatus, infra anyulum convexiusculus ; apertura 

 modiea, basin versus aliquanto latior, fauce lutea. 

 Long. 40, diam. 15 millim. 

 Hab. New Caledonia. 



A beautiful and remarkable species, of an elongated form, and a 

 style of marking that would bring it just within the confines of the 

 "cylinder" or "textile" group. The orange lines are very 

 fine, mostly running longitudinally, in some places parallel and 

 zigzag, in others leaving triangular white spaces as in C. textile, 

 and others of that group. The specimen forms part of the collec- 

 tion of M. Thomas of Brest ; another specimen is in the collection 

 of Dr. Prevost of Alengon. 



3. Conus bocki, n. sp. (Plate LVI. fig. 7.) 



Testa turbinata, pallide lutea, luteo-fusco transversim mullifasciata, 

 et longitudinaliter strigata, hie illic nigra fusco radiata ; spira 

 breviuscula, albida, promiscue luteo strigata, ad apicem prominula ; 

 anfractus superne planati, cancellati, ad unguium coronati ; anfr. 

 ultimus superne tuberculis grandibus coronatus, infra angulum 

 Icevigatus, deinde leviter granoso-costatus ; apertura alba, medio- 

 criter lata ; labrum leviter arcuatum. 



Long. 60, diam. 32 millim. 



Hab. Amboyna {^Carl BocJc). 



