1886.] 0. F. von Mollendorff— T/^e Landshells of Perah. 311 



Related to the last, bat much smaller, more distantly ribbed, ulti- 

 mate whorl without angulation at the periphery, the inner peristome 

 much more prominent and the outer less widely expanded. 



41. Alycj^us miceodiscus, n. sp. 



Testa aperte umhilicata, discoidea, densissime costulata, cornea, spira 

 "brevissime prominida. Anfr. 3 J — 4 convexi, ultimus valde remote ah aper- 

 tura leviter constrictus, dein distortus et ascendens, ad apertura'in hreviter 

 deflexus, subtus jpauTlum inflaius, gihhus, tuhulus suturulis brevissimus, 

 Apertura parum obliqua, sub circular is, peristoma duplex, externum expan- 

 sum, reflexiusculum, internum porrectum, expansiusculum. Diam. maj. 

 2|, min. If, alt. 1 mill. 



Hab. — Ad Buket Pondong, leg. cl. R. Hungerford. 



The peculiar distorsion of the last whorl, which first ascends after 

 the constriction and is then again deflected towards the aperture, separates 

 this minute species from all forms known to me. 



42. Altcjius paryulus, n. sp. 



Testa sat aperte umbilicata, discoidea, confertim et minute costulata, 

 cornea; spira brevissime prominula ; anfr. 3| — 4 convexi, ultimus paullum 

 ab apertura remote leviter constrictus, dein t'lomidulus, hasi parum infiatus, 

 subgibbus, tubulus suturalis brevissiinus ; apertura diagonalis, circularis, 

 peristoma duplex, externum late expansum, internum late porrectum, ex- 

 pansiusculum. Diam. maj. If, alt. f mill. 



Hab. — Ad Buket Pondong, leg. cl. R. Hungerford. 



Another minute form, still smaller than the last, to which it appears 

 somewhat related. It differs, however, in the constriction being com- 

 paratively nearer to the aperture, the almost regular last whorl, the 

 broad outer and very prominent inner peristome. 



43. Altc^eus microconus, n. sp. 



Testa umbilicata, globoso-conica, costulis confertis transversis et 

 lineis spiralibus quasi reticulata, cornea ; anfr. 4 convexi, ultimus pone 

 aperturatn leviter constrictus, sub tubulo suturali inodico densius costula- 

 tus, dein subglabratus, non descendens. Apertura parum obliqua, fere 

 circularis, peristoma hreviter expansum, tenue, subduplicatum. Diam. 

 maj. 1|, alt. 1| mill. 



Hab, — Ad Buket Pondong, leg. cl. R. Hungerford. 



By the conical shape, the regular last whorl, the reticulate sculp- 

 ture this small species is very well distinguished from all Indian Alyccei. 



