Mr. W. Clark on the Chcmhitz!ifP. 



oJbntiol Chemnitsiafulvocincta, Thompson and Alder. i-jciqa 



See the notes immediately above for what is knoMm of this 

 species, which is ^ecjjdjidly ,^is^u;<c^t f^;^^t^^^ ntfa. 



CJieinnitzia Sandvicensis, nobis; 



Turho Sandvicensis, Walker, Test. Min. Ear. 



Testa subovalis, inflata, subpcUucida, pruinosa. Anfractus qu^- 

 .j.,,tuor, duobus ultimis tuinidis, superne turrieulatis, liueis flcx- 

 iiosis, spiraliter cinctis, striis incrementi prominulis, dcnsis, 

 obliquis, decussatis ; anfractu basali, plusquam dimidiam te>stie 

 ,,. jSuperante. Apex in gyrum sequentem retlexus. Apcrtura 

 subovalis, ad basin rotundata, effusa, supra in brevem rectan- 

 gulum desinens. Labium columnare reflcxum, incrassatum, 

 umbilicum angustum obtegens, superne plicam conspicuara 

 gercns. Margo externa simplex. Axis circa y^, dian^e^j^^ jy 



uncise. ,;,'„!, i 



Exmouth, August 1850. , 



I have just obtained fine specimens of this rare species, first 

 discovered by Mr. Walker at Sandwich, and rediscovei'cd by my- 

 self at Exmouth near thirty years ago. From an examination of 

 my present acquisitions at this place, I am bound, in justice to 

 that naturalist's diagnosis, to confirm the statement that bi^ 

 shell has a g'jitasz- reticulated aspect, resulting from the close-s^t 

 raised lines of increment, crossing the spiral stria?, though iircr 

 gularly. Mr. Walker's phrase of elegantly reticulated is not 

 borne out, nor is the shell pellucid, but subopake and frosted, 5 

 its texture and colour somewhat resemble the Bullcea pruinosa. 

 Some of the recent specimens were taken alive ; but unfortunately, 

 before they were detected, the animals had become asphyxied, 

 beyond resuscitation, by immersion in their natural element- 

 Notwithstanding these discrepancies in Mr. Walker's and my 

 specific characters, I have scarcely a doubt of this being the spe- 

 cies he meant to designate, making due allowances for the lax 

 and less precise descriptions of his day ; for instance, he says, the 

 shell has three volutions ; — a cursory view would assign it that 

 number ; but the conchologists of that period, with the exception 

 of the accurate Montagu, were not aware that the apical turns 

 in a certain tribe of the minuter species were reflexed on the 

 subsequent one. Mr. Walker's specific characters are perhaps 

 insufficient for positive identification. At the time of the re- 

 discovery of the species I neglected to enlarge them ; I have 

 repaix'ed the omission, by presenting above, more correct dia- 

 gnoses. Believing our shell to be the true Turbo Sandvicensis, I 

 of course a,dopt, as a matter of rjeht and iustice. Mr. Walker's 



