279 DR. P. P. CARPENTER ON NEW SPECIES 



nymphalis, but differs in the internal scars. Externally it resem- 

 T. dombeyi, Lam. (= Scrobicularia producta, Cpr. P. Z. S. 1855, 

 p. 230), but is easily recognized by the strictly Tellinoid ligament 

 and anterior lateral tooth, by the posterior portion being pinched 

 instead of waved, and by the junction of the pallial sinus with the 

 opposite scar. By the same characters it is distinguished from T 

 tersa, Gld., which closely resembles S. dombeyi, var., in Mus. Cum. 

 Like many other Tellens, it has a white and a pink variety. The 

 uame was printed by an oversight in Brit. Assoc. Rep. 1863, p. 669, 

 as A. amplectans ; but as it was unaccompanied by a diagnosis, and 

 does not describe the shell, no confusion will arise from reverting 

 to the name first given. 



LUCINA UNDATA. 



L. t. convexa, tenuiore, albida; tota superficie lirulis concentricis 

 creberrimis, compressis, hand acutis ornata, inter stitiis mini- 

 mis ; parte ventrali costis radiantibus iii., obtusis, latis, vnJi- 

 dissimis, interstitiis parvis ; iunula maxima, a sulco bene defi- 

 nita, sub umbonibus incurvatis fossa alta minuta indentata; 

 parte postica alata ; margine a costis valde undato, minute 

 crenulato ; ligamento quasi interno : intus dent. card, parvis, 

 a fossa lunulari intortis ; lat. curtis, obtusis ; cicatr. afl<h>ct. 

 antica irregulari, postica subovali ; linea palliari prope mar- 

 ginem sita, undata. 

 Long. -45, lat. '44, alt. -3. 

 Hab. ihilf of California (teste Eowelt). 



The outline somewhat resembles Cryptodon ; but the aspect 

 is more that of Verticordia, while the minute subumbonal pit 

 is suggestive of Opis. The shell is sexpartite ; the portion between 

 the anterior rib and the lunule resembles a fourth rib, while the 

 projecting lunule and the posterior wing are quite distinct from the 

 body of the shell. The specimen sent by Mr. Rowell to the Smith- 

 sonian Institution was completely smashed. The diagnosis is written 

 from a perfect shell sent by Dr. Newcomb to Mr. Cuming. 



CALLIOSTOMA (?LIMA, var.) ^QUISCULPTA. 



C. t. "C. limse" simili ; sed anfr. planatis, suturis houd dis- 

 tinctis ; sculptura regulari ; jun. monilibus spiralibus inter se 

 cequalibus ; t. adulta majore et minore alternantibus ; co'ore 

 rufescente, granulis interdum rufo-fusco maculatis. 

 Hab. Acapulco (Neivberry). 



Dr. Newberry's specimens agree in most essential respects with 

 " Trochus lima, Phil.," in C. B. Ad. Pan. Shells, no. 2/6, which 

 appears identical with the shells marked " Ziziphinus antonii, Koch, 

 N. Zealand," in Mus. Cuming. The Acapulcan shells are quite 

 flat, while those from Panama are for the most part shouldered as 

 in C. eximium, Rve. (= C. versicolor, Mke. Maz. Cat. no. 28y). 

 However, there is no little variation among the Professor's speci- 

 mens of C. lima, and some are so slightly shouldered thai the Aca- 

 pulcan form may be a local variety. 



272 



