- 435 - 



:.C:^I-1 ? AG I A "30V/DSI'I AE A ( lal 1 \ 



Anonialo g ar di a "bo-.-clenigna Dall , 1903, Trans, './agner "^ree Inst. 

 Sex., Philadelphia, toI. Z, pt. S, pp. 1504-1305, 



pi. 57, : i . 7. 



Sesoriptiou .- "Shell suall, ovate- trigonal, fjulsror^trate, 

 with a flexuo'"' ' 5 ae i^ehin'T r ■:->'=■ •^■'■-« vn-^-rr..-,- ^ ^ :-^ocogyrate ; 



luxmle large, impresr; ", ell-d ef ine d, out v.itii no cleiineS ec- 

 catcheon, posterior end pointed,, anterior enc5 roimderl, haoe 

 areuate, r-^ther prominent me sialic ; /^•'^■-■'^e r' cnlptiire"'' 'a1 th eon- 

 oentric striae with flattish v/ider interspaces; hinge norrsal, 

 rather heav;;, inner margins entire; pallial Ginu:; small, angular. 

 Lenght 4.5, height 3.5, '■''i arr.e •-'^■^ "^.0 mm." 



•'The small vslve from which the above '■■description is rira^ira 

 up (the r'iameter as iisiial being twice the er ox the valve) 



is lip to the present time " csentative of the gen.iis 



knov^/n from the Bowden marl. It is doubtless iiiimatm-e. " (Dall, 

 1303). 



?ype lo oalit-- .- "'-owden, Jamaica. 



?emar":s . - 2hi s s t rang e s pe c i es is w ell-r eo re sent e d in the 

 material at hand and there is not reason for assuming- t at the 

 largest valves are no'' "^■■It . ?he cl'-aracters, including those 

 of the hinge, are const.scit throxK:-h all the stages of growth. 

 The largest valve has the following dimensions: length, 10 mm.; 



