lui BCHNOCHITi 



Th- pricked inter-tic, n tin- clo>e-set ridircs which consti- 



one of tlu* distinguishing features of this species are scarcely 



:iihle without tlio lens. (Rve.) 



Simon's /*'<///, Cape of Goo<l II 



C.i i: . i < >nch. Icon. pi. xvi, 88 L847). -IMfioc&t- 



1 !!:.. .l/\ 



rpenter*s notes from two specimena in tin- Cumin-.: collection 



areas follow*: The liu r 'iiv in Keeve doe- nut rcprc-cnt it well. It 

 i- one of the //'/ irnmp. Shell much arched, elevated, lint the 

 juiruni rather blunt, t'mho of posterior valve raised, situated at 

 the anterior third ; the -lopr hehind it very ,-liirhtly concave, nearlv 



jht. <JinlU with Isclinoiil scales, but small, long, somewhat 



iinlirieatinir and >triated. Color oliv:uvou>, varierated. JiiL r al 

 area imt deiined from the central areas, which are sculptured with 

 v TV numerous and line rather blunt liruhe with extremely small 

 inter-ii<'-: <>r the >url'ace ini^lit he described a< finely rniov d. 

 ThcM- .-mail rihlets are longitudinal, very slightly rrai)o.-e, and at 

 the diagonal liordrr of the lateral areas become rupilose, passing 

 on to join with the riblets of the latter, The lateral areas have 

 about '' to 12 very fine radiating rihlets which are m::de i:rane by 

 the longitudinal riblets from the central areas croini_ r them. The 

 end valves have very close and regular radiating rows of Drains, the 

 -culpture bt-inir very like that of C'ltrini/ntii*, but in that species the 

 i-oiic.-ntric wrinkles predominate. The head valve- has TJ slits, 

 median 1, posterior valve !) slits. Teeth quite sliarp, with lonu r |>ro- 

 jectiipj; eaves, which are not spongy. Sinus broad, rather deep, flat, 

 -m. .,,th. but deeply channelled on each side at the inner has.snfthe 

 sutural plate-. Terminal valves stained with brownish-purple inside. 

 :li :;_'. breadth K'.; mill.; divergence 113. 



I. i \:\ HII:>N>ITS C. ]\. Adams. Unfi</n,; <l. 



Shell small, snbeloiiirate. [ convex, not carinated]: yellow-wliite, 

 [the back] irregularly maculated with red; lateral areas ribbed, the 

 rib- n. .diilons: dr-al area< [silicate-] striated; ;irdle scaly [ vel- 

 ! \\i-h-\vhite. maculated with ashen]. Length 1 .'J , ; , width 7', mill. 



\danisi: >V. Thnnin.* ninl r<,,-t<, Him (\\\\\\\\\*>v <. 



Cli IhronakuC. P.. Ai>., Proo, BostSoe, N. II. l v 



1 . I ; ,' l rliifnn) t'1-iltlii-iniufii* SnrTTI.W., I>eril. M i 1 1 lie! I . ! 



