167 



c.ivuy. Costa satis maiiifesla ah apice ad anguliini ven- 

 tralem posticiim deciirrit. 



40. Rissoa urata Pb. 



l{. Ifsta turiila, siihperforata , alhida, striis clevalis 

 ti-ansversis argulis exarata : anfiactibus 6 — 7 perparum 

 convcxis; striis clevalis Iransversis 6 — 8 in anfr. supp., 

 16—20 in ultimo; apcrtura ovato-orhiculari, snperius vix 

 angulata, dimidiam spiram occu|)an(e; peristomate conti- 

 nuo, labro siinidici. Long. 2V4'"; lat. oblique 1'". 



Patria: Gabon in Guinea, comm. cl. Largilliert. 



4i. Rissoa rufa Ph. 



11. tesla lanceolalo-turrila , subperforata, laevissima, 

 rtila , ad suluram interdum nigro zonata; anf'ractibus sex, 

 niediocriter et aequaliter convexis; apertura ovata, Vj lon- 

 gitudiins necpiante, superius angulata, peristomate conti- 

 nuo; labro simplici. Alt. l'/e'"; diam. V4'". 



Palria: Gabon in Guinea, comm. cl. Largilliert. 



42. Rissoa solidula Ph. 



R. tesla lanceolato- turrita, imperforata, laevissima, 

 licet sub lenlc fortiore tenuissime transversim striata, lla- 

 vescente, (emortua); anfractibus sex, convexis, penultimo 

 magno, (ereti; apertura ovata, propter peristoma crassum 

 angustata, Vj longitudinis aequante; labro simplice. Long. 

 2"'; lat. 1"'. 



Fatria: Gabon in Guinea, comm. cl. Largilliert. 



4S. Solarium aeikiops Menke. 



S. lesta globoso-conica, nigra, ad suturam et in am- 

 bitu anlractus uliinn' albo maculata : anfractibus planiuscu- 

 lis; cingulis quiiicpic granosis, tribus stiperioribus minori- 

 bus; anlVactu ultimo teretiusculo, in basi cingulis granu- 

 laiis sex sciilpto, sccundo tertioquc minoribus; umbilicu 



