UN... Ill I' !! 



.. ( 'ouch. llliMr. !'. HI ni d.-crihed, RE 

 ////.>). Not ( '/i. //.///// '.'I . 



The ahove dc-ciiplio|| is from ' 



taut panagee hem- italicized h\- on 



worthless. Keevc's liiruiv and description do n..t pi -rtain to t hi- 



species, hut to I. (Radsiella) xebra Kran- , true /. 



iii all respects a typical Ttehnochiton, I refer the no d C. 



mtlt-,1 of Suwerhy to t,.rtili. becaOM il i- -aid to IK- that tpeckl l>y 

 S,. \vt-rhy hiinsclt'; lut the figure i> VTV poor, The detaUl h 



u'ivcn will enable studenta to identify (H .ith eomj 



alive ease and certainty, without a figure; for it wemi to he closely 

 allied to the /. oni*<'n.t only ainoiiL r South African < 'Into 

 details of sculpture of the central areas and the coloring -em to he 

 especially characteristic. Krauss de.-crihe- specimen.- collected hv 

 him, and which he at one time considered a new species which he 

 intended naming C. lil>r!</i. His description is as toll 



Shell ovate-elonpite, semipellucid, snhcarinated : white in the 

 middle, the sides ashen-green, often spotted with hrown ; int 

 white. Front valve lunate, tail valve rather depreased, >uhmucro- 

 nate in the middle; intermediate valves having the central areas 

 finely punctate on the ridge, longitudinally striolate at the sides; 

 lateral areas and end valves radiately rugulose-striated. (iiidle 

 a-hi'ii, suhniaculated, scaly, the scales small and ohlonir, > . 

 finely multicn rln ,<ifed. Length 22, breadth 11 mill. Tahle Uay. 



The anterior valve and the posterior part of the posterior valve 

 are radially wrinkle-striated and have 1 '_' >lits in the insertion 

 plates, which are smooth and shorter than the eaves. The median 

 valves are rather narrow (8'6 x 3 mill.) and have distinct lateral 

 areas with 5 to 6 strong wrinkle-like and interrupted stria-. The cen- 

 tral areas are seen under a lens to be covered with fine raised points, 

 which toward the margins become more and more di-tinct, and 

 near the lateral margins as well as in front of the hit oral areas they 

 unite into distinct longitudinal rows. The sutural plates are 

 rounded; insertion plates short , smooth, and having a single slit. 

 The girdle is covered with extremely small, thin longitudinal 

 not discernahle to the naked eye, and prettily marki d with 8-9 

 stria\ The color is whitish in the middle of the shell. Lrrayish- 

 green on the sides, and dotted and llecked throughout with brown. 



Krauss also describes the following : 



