93 



Genus Neilo, A. Adams. 



Testa transversa cBquivalvis, incequilateralis, epidermide fusco 

 tenui induta, latere postico Mans. Dentibus cardinalibus, 

 nuUis, lateribus anticis et posticis plurimis in serie rectiuscula 

 dispositis ; dentibus parvis acutis ; impressionibus musculari- 

 bus subdistantibus, impressione pallii sinu magno ; ligamento 

 externa elongato. 

 This genus differs 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. 



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

 incequilaterali, epidermide tenui viridi-fusco obtecta, trans- 

 verse concenti'ice sulcata ; latere antica claiiso, rotundato, 

 postico, longiore, subangulato, hiante, margine truncato jlexuoso, 

 super ne auriculato. 

 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, longitudinaliter radiatim costata, transverse la- 

 mellosa, lamellis pulcherrime fimbriatis ; spira minuta, an- 

 fractu ultimo amplo ; apertura ovali antice attenuata, sub- 

 canaliculata ; labio excavato incurvato, margine externa dila- 

 tato et valde reflexo ; labro acuto, margine late dilatato et 

 eleganter fimbriato. 

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

 pines. On the coral reefs at low water (iT. C). Mus. Cuming. 



Externally this curious shell resembles Concholepas, 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 Lepto- 

 conchus, 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 Concholepas, under the name of Coralliobia. 



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

 epidermide fusca obtecta ; anfractibus septem convexis, longi- 

 tudinaliter confertim costellatis vel valde striatis ; apertura 

 suborbiculari, ascendente, antice subproducta ; peristomate 

 duplici, externa rejlexa, dilatato ; labio plica dentiformi valida 

 instructo. 



Hab. ? 



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



