~T9 DR. p. p. CARPENTER ON NEW SPECIES 



ni/mpkoUx, l)nt tliffers in the internal scars. Externally it resem- 

 T. domheiji. Lam. (= Scrobiculaiia prodiicta, C\\t. 1*. Z. S. 18.^."), 

 jt. -30), l)iit is easily recognized by the strictly Tellinoid li<;aineMt 

 and anterior lateral tooth, by the posterior portion being pinelied 

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

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

 tersa, Gld., which closely resemljles i?. doinheiji, var., in Mas. Cnm. 

 Like many other Tellens, it has a white and a j)ink variety. The 

 name was printed by an oversight in Brit. Assoc. Uep. ISti.l, p. G(i9, 

 as A. amplfctans ; 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. coni'fiia, tenuiore, alhnla; tota superjicie lirulis concentrieis 

 crfierriijiis, compressis, hand wjutis oriuita, iiiter.stitns mini- 

 mis ; pdrte ventrnJi costis rudiuntibus iii,, obtusis, talis, vnli- 

 dissimis, interstitiis parvis ; lunula maxima, a sulco bene deji- 

 nita, sub umbnnibus incurvatis fossa alia minuta indentntu ; 

 parte pustica alata ; maryiae a costis vulde ttiidato, minute 

 cremdato ; liyamento quasi interno : intus dent. card, parcis, 

 a fossa lunulari intortis ; lat. curtis, obtusis; cicatr. adduct. 

 antica irreyulari, postica suboculi ; tinea palliari props mur- 

 ginem sita, undata. 

 Long. -4."), lat. -4-4, alt. '3. 

 Hab. Gulf of California (teste Eowell). 



The outline somewhat resembles Cnjpfodon ; but the af?pcct 

 is more that of J^erticordia, while the minute sut)uml)onal pit 

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

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

 projecting huude and the [)osterior wing are quite distinct from the 

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

 sonian Institution was completely smashed. The diagnosis is written 

 from a perfect shell sent by Dr. Newcornb to Mr. Cumhig. 



Calliostoma (?lima, var.) ^auiscuLPXA. 



C. t. "C. limse" simi/i ; sed anfr. planatis, suturis havd dis- 

 tiuctis ; sculptura regulari ; jun. moui/ibus spiralibus inter se 

 (cqualibus ; t. adulta mujore et tninore alternantibus ; colore 

 rufesceutp, granutis interdum j-ufo-fusco tnaculatis. 

 Hub. Acapnlco {Newberry). 



Dr. Newberry's specimens agree in n: :st essential respects with 

 " Trochus lima, Phil.," in C. V. Ad. Pan. Shells, no. 276, which 

 apjiears identical with the shells marked '" Zizipliinus antonii, Koch, 

 N. Zealand," in Mus. Cuming. The Acapulcau shells are cpsite 

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

 in C. eximium, Kve. (= C. versicolor, Mke. Maz. Cat. no. 28!J). 

 However, there is no little variation among the Professor's s])eei- 

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

 pulcau form may be a local variety. 



272 



