OP CONCHOLOGY. 



233 



^^ liassa turricula, Pse. MSS., = var. of jyaiipera, GUI," 

 Correct. Turricula, Pse., represents the full characters of 



the species. Those collected by Am. Ex. at the Samoa's are 



dwarf varieties. 



" Columbella fiammea, Pse. MSS., = var. o^ tceniata Ad. and 

 Rve." 



I have discovered that the above species is the C. 3Iarquesay 

 Gask., and not tceniat a. My specimens were collected at 

 Tahiti and the Paumotus, a short distance from the Marquesas. 



" Columbella like Atistralis, Pse. MSS." 



I will not venture to express an opinion on such a species. 



" Sistrum sentinodosum, Pse. MSS., = elatum, Blain." 

 So named in my collection, several years since. 



^'- 3Iifra hrimnea, Pse. MSS., = Strigatclla fiiscesce^is, Vse." 

 An error has probably occurred from change of labels in the 

 Cumingian Coll. The bninnea belongs to the group represented 

 by ColumbeUa'formis, while the fmcescens is nearly allied to 

 Ticaonica. The two species have not a character in common ; 

 they belong to different genera. 



"■ Mitra tessellata, Pse., MSS., = puella, Rve." 



I have no species in my collection of the above name, except. 



ing the one figured by Martyn. Dr. C. probably refers to 3f. 



putillus, Pse., Proc. Zool. Soc, London, 1865. That species 



approaches puella, but is more closely related to M. alveolus, 



Rve. 



" Triton crenulatus, Pse. MSS., = antiquatus, Hinds." 

 So named in my collection several years past. 



A group of small shells inhabit Polynesia, represented by 

 CitJiara ornata, Pse., varia, Pse., etc., which have been referred 

 by Dr. Carpenter to genus Anachis, A. Ad. Species also occur 

 on West Coast of America and in the West Indies, which differ 

 but slightly from the Polynesian. Perfect specimens are rarely 

 met with. Having collected a few of each species, I find they 

 present the following characters : Smooth, shining, colors some- 

 times iridescent, more or less closely ribbed longitudinally, and 

 striated transversely ; ribs continuous ; aperture narrow, outer 

 and inner lips denticulate or lyrate within, inner lip bordered by 

 a slight callosity, outer lip sinuated at or near its junction with 

 the body whorl. 



The denticulations are often worn off, and the sinus is shal- 

 lowed or entirely disappears, as the edge of the lip is sharp and 

 thin. 



