70 Zoological Society. 



dispositis ; dentibus parvis acutis ; impressionibus musculari- 

 bus subdistantibus, impressione pallii sinu magna; ligamento 

 externa elongato. 

 This genus diiFers from Solenella, not only in its Leda-like form, 

 but in the hinge-margin having as many teeth anteriorly as poste- 

 riorly. In Solenella the series of teeth is confined to the fulcrum to 

 which the external ligament is attached ; — in this genus the teeth ex- 

 tend along the entire hinge-margin. 



Neilo Cumingii, a. Adams. N. testa transversa, cequivalvi, 

 incequilaterali, epidermide tenui viridi-fusco obtecta, trans- 

 verse concentrice sulcata ; latere antico clauso, rotundatOy 

 pastico longiore, subangulato, hiante, margine truncato fiexuosOy 

 superne auriculata. 

 From the circumstance of the hind margin gaping considerably 

 and being divided as if for two siphons, the anal and branchial tubes 

 in this animal are probably distinct and elongated, as in Leda, The 

 genus Neilo, in fact, will represent Leda, of the family Nuculidce, in 

 a distinct family, SolenellidcB, characterized by the external ligament 

 of the hinge. It is from the shores of New Zealand. 



CoNCHOLEPAS (Coralliobia) fimbriata, A. Adams. C. testa 

 ovata alba, langitudinaliter radiatim costata, transverse la- 

 mellosa, lamellis pulcherrime Jimbriatis ; spira minuta, an- 

 fractu ultima ampla ; apertura ovali, antice attenuata, sub- 

 canaliculata ; labia excavata incurvata, margine externa dila- 

 tato et valde refiexo ; labra acuta, margine late dilatata et 

 eleganter fimbriata. 

 Hab. Cagayan, province of Misamis, island of Mindanao, Philip- 

 pines. On the coral reefs at low water {H. C). Mus. Cuming. 



Externally this curious shell resembles Canchalepas, but the ab- 

 sence of the two teeth on the fore part of the outer lip prevents it 

 being strictly referred to that genus. In the character of the inner 

 lip, and in its place of habitation on coral reefs, it approaches Lepta- 

 canchus, and perhaps it has affinities also with Pedicularia. I have 

 thought it best, until the animal is known, to regard it as a sub- 

 genus of Canchalepas, under the name of Coralliobia. 



Paxillus minor, a. Adams. P. testa dextrorsa, ovali, tenui, 

 epidermide fusca obtecta ; anfractibus sept em, convexis, langi- 

 tudinaliter canfertim casiellatis vel valde striatis ; apertura 

 subarbiculari, ascendente, antice subproducta ; peristamate 

 duplici, externa refiexo, dilatata ; labia plica dentifarmi valida 

 instructa. 



Hab. ? 



I believe the little shell described above to be a dextral species of 

 the genus Paxillus, described by my brother and myself in the 

 * Annals' for January, 1851. We there considered the genus to be- 

 long possibly to Auriculidce ; but an examination of this species, 

 and a better knowledge of the locality where the shells have been 

 found, lead us to place them amongst the Helicidce. 



DiPLOMMATiNA Bensoni, A. Adams. 2>. testa minima vix ri- 



