- 5 7S - 



Familj" Diplodontidae. 

 Geniis DIPLODC" ... -'ovm. 

 Section Diplodonta s. a. 



LiP- -1 .;AIII n* sp. 



Description .- Shell srsall, stib orbicular^ decide'lly inflat- 

 ed; slightli" more ooriver-.'ly rouiided. anteriorly; imibones tnmiS, 

 broad, eonspicuoiis, subcent ral ; external surface smooth or v.'ith 

 irregiilarly dispersed^ obscure, concentric striations; the loft 

 anterior cardinal strong, bifid, the posterior lamellar, s "or'ar- 

 ginal; rifht cardinals subeqiial, moderately heavy, the posterior 

 obs cnr el y b i f i d . 



Siiviensions .- lat,, C.5 ram.; alt., ".5 ram.; semidiam. , 2.5 mr 

 r?emarks .- D. \'.-all i , T?/hich is describerT from two valves, has 

 been referred to fl) as D. ca'onloides (f 'abb) (2), a Santo -^ominp-ian 



(1). Dall, '7, H., Irans. \7agner Free Inst. Scl., "Philadelphia, vol. 

 ', pt. 5, p« 1182, 1900 (pt. 6, p. 1587, ^ ^ •^3 (check list) 

 LS ^. oanuioidrs 7n"-T'-^ 



rr 



■ 1 



at 



(r). Trans. Am. Philos. Joc . , ■ ■ r., vol. 15, -o. 252 (as 

 Ky s i a ■? arii^l o i d e s 1 . 



form, which is, ha"? ever, not a Diplodont a , brct most liTrely a 

 Joonerella. 



The Bowden form is disting^^ishe d from the coexistent r;iembers 



