169 



LiTTORINIDiE. 



Amnicola? aiitipodai-um, Gray, Fauna New Zeal. 241. n. 101. 

 Aiickland, New Zealand ; Major Greemvood. 



Amnicola? Zelandise, Gray, Fauna New Zeal. 241. n. 102. 

 Auckland, New Zealand ; Major Greenmood. 



Amnicola? n. sp. 



A single specimen, not in a good statė. 



Auckland, New Zealand ; Major Greentoood. 



Major Greenwood also sent two specimens of a marine shell. He 

 observes, that it was " entirely enveloped by tbe animal when alive." 

 It proved a new species of Lamellaria. 



Lamellaria Ophione. 



Shell oblong, elongate, pellucid, white ; spire very short, conical ; 

 whorls convex, lašt whorl very large, convex, rather iridescent ; aper- 

 ture ovate ; pillar-lip curved, slightly reflexed. 



Auckland, New Zealand. 



2. On THE x\nimal of Geomelania. By Arthur Adams, 

 R.N., F.L.S. ETC. 



(Mollusca, PI. VI. figs. 2, 3, 4.) 



An examination of the animal of Geomelania Jamaicensis, Pfeiffer 

 (which the kindness of Mr. Cuming has allowed me to make), shows 

 it to belong to the family of Looping-Snails, Truncatellidce of Gray ; 

 in fact, it difFers in no respect from the animal of Truncatella. 



The tentacles are short, conical and depressed, with the eyes large, 

 black, and sessile on the middle of the upper surface of their base ; 

 the head terminates anteriorly in a broad, flattened bilobate proboscis, 

 as long as the tentacles ; and the foot is short, depressed, and divided 

 by a deep groove from the head, bearing on its upper hind surface a 

 homy, simple, thin, oval operculum, with the apex shghtly spirai, and 

 the nucleus subterminal. The order, which consists of the genera 

 Truncatella, Skenea, Geomelania, and possibly Acicula and Assimi- 

 nea, differs from the Cyclostomidce in the position of the eyes and 

 the short depressed tentacles ; and would seem to be placed most 

 naturally between AuriculidcB and Cyclostomidce. By means of Ria- 

 soa and Hydrobia it has also relations with LittorinidcB ; Truncatella 

 resembling the former and dsniminea the latter genus. In habits 

 they are amphibious. 



3. Descriptions of new species of Shells from the Ctj- 

 MiNGiAN Collectioc*. By Arthur Adams, F.L.S. 



1. Tellina sdUAMULOSA. (Mollusca, PI. VI. fig. 1.) T. testd 

 transversd, cecįuilaterali, albd, concentrich in tnedio plicatd, plicis 

 angulatis subdistantibus, interstitiis longitudinaliter striatis ; 

 rer/ionibus lateralibus sąuamulis spinosis, regione ventrali 



