new Molluslcs from South or Central Africa. 80 



Bredasdorp specimen as the typo. Thougli minuto, tlie sculp- 

 ture is most olaboiate, with fine oblique lirulai cxtenditi;:^ over 

 llie entire surface. The umbilicus is deep, though narrow, last 

 whorl serrately keeled, a))erture somewhat square, lip simple. 

 We provisionally place this species under Fella on account 

 of its similarity of texture to //. bisculpta (Benson) and allies ; 

 but there can be no doubt but that in some respects it 

 approaches the subgenus Martensia (Semper). 



5. Helix {Pella) hatliycceU^ sp. n. (PI. V. fig. 4.) 



//. testa minuta, profundissimo umbilicata, tenui, cornoo-virente, 

 planorbiforrai, apiee fere immcrso ; anfractibus sex, convcxis, ad 

 suturas impressis, liris regularibus longitudiualiter undique cinctis, 

 anfractu ultimo rapide accresceute, infra effusa ; peristomate 

 tenui, simplici ; apertura lunari. 



Long. 1-50, lat. 2-50 mill. 



Hah. Under dead leaves in the bush, Craigie Burn, Somer- 

 set East, S. Africa {Miss Mary Layard Hoxoker'). 



Another very lovely species, though minute, and conspicu- 

 ous for its flattened upper whorls as well as its deep perspec- 

 tive umbilicus, the whole surface of the greenish-horny shell 

 being decorated with fine longitudinal regular lirse. 



Five specimens. 



6. Helix [Trochozonites) dioryx^ sp. n. (PI. V. fig. 2.) 



H. testa conico-pyramidali, obtecte umbilicata, ad basin planato- 

 convexa, trochiformi, opaea, albo-grisea, scrupulosa, eijidermide 

 brunnea tccta ; anfractibus septem, infra suturas canaliculatis, 

 costulis rugulosis regulariter oblique dispositis, ultimo ad peri- 

 pberiam carinato ; apertura quadrata ; peristomate tenui, sim- 

 plici, apud marginem columellarem pauUum reflexo. 



Long. 7, lat. 6 mill. 



Hah. On sand-dunes, Robbe Bay, S. Africa [E. L. 

 Layard). 



Allied to H. Folini (Morelet), from W. Africa. The 

 shell is pyramidal, with conical apex, seven-whorled, the 

 whorls being very deeply transversely channelled just below 

 the sutures and covered with a brownish epidermis. There 

 are rough wrinkled lira3 or riblets at regular distances longi- 

 tudinally crossing the whorls, the mouth being simple, with 

 slight columellar marginal reflexion. 



