SPATHA ,337 



Spattia cuyptoradiata Putzeys. 



Shell oblong, rhomboid, inequilateral, convex with dorsal 

 and ventral lines parallel, both curved up a little in the middle; 

 posterior slope subtruncate ; anterior end rounded; posterior 

 ndge low, rounded, ending behind in a blunt point near the 

 base of the shell : beaks somewhat raised, their sculpture not 

 known; surface apparently concentrically ridged, having a 

 few feeble plications on the posterior slope ; epidermis fuscous ; 

 nacre pearly, bluish-white, rather thick. 



Length 64, height 29, diam. 17 mm. 



Leopoldville ; Congo. 

 Spatha cryptoradiata Putzeys, Proc. Verb. Soc. Mai. Belg., 



1898, pi. xxvir. figs. 14, i5._SiMPS0N, Syn.', 1900, p. 900.— 



Germain^ I'Afrique Cent. Fr., 1907, p. 562. 

 Spatha (Leptospatha) cryptoraoita Germaik, Mem. Soc Zool 



Fr.. XIX, 1906. p. 241. 



According to the figure this species is sculptured with fine, 

 broken plications, which run longitudinally or somewhat ob- 

 liquely to the growth lines. 



According to Germain, (1. c. T907), this peculiar appearance 

 of the epidermis is not a specific character, but is the result 

 of the alternate conditions of drought and humidity to which 

 the species is subjected in its habitat. 



Spatha protchei (Rochebrune). 



"Shell elongate rhomboid, subcompressed. rounded in front, 

 elongate wedge-shaped behind, slightly gaping; epidermis 

 smooth, shining, sublamellose, especially in the posterior re- 

 gion ; concentrically, minutely sulcate and radiately, broadly 

 striate; dorsal margin nearly straight; ventral margin sub- 

 sinuous ; beaks small, eroded, copper-colored ; epidermis brown- 

 ish-red ; nacre livid in the centre, pale rose towards the mar- 

 gins, shining. 



Length 61, height, in front 22, in the middle 25, behind 28 

 diam. 14mm." (Rochebrune). 



Type locality, Mokaka, Congo. 

 Spatkella protchei Rochebrune, Bull. Soc. Mai. Fr., Ill, 1886, 



p. 8. — Simpson, Syn., 1900, p. 902. 



