310 0. F. von Molloiidorff— T/ie Land^hells of Perah. [No. 4, 



ALYC^INJE. 



37. Altcjius qibbosulus, Stoliczka. 



Stoliczka, J. A. S. B., xli, pt. 2, 1872, p. 268, t. x, f. 14. Pfeiffer, Mon. Pneum., 

 suppl. iii, 1876, p. 58. G. Nevill, Handl., 1878, p. 295. Crosse, J. de Conch., xxvii, 

 1879, p. 339, t. xii, f. 8. 



Originally described from Penang, but found at Buket Pondong by- 

 Messrs. Townsend and Hungerford. The Pera^k form presents some 

 slight differences, viz., pale whitish colour, broader base, and more in- 

 flated last whorl, but these do not justify the separation even as a variety. 



38. Alyc^us peraeensis, Crosse. 



Crosse, J. de Conch., xxvii, 1879, pp. 206, 339, t. xii, f. 7. 



Discovered by Dr. Townsend at Buket Pondong, where Mr. Hunger- 

 ford also collected it in some numbers. Crosse justly compares it with 

 A.jagorif Mart., from Java, from which it is, however, well distinguished 

 by its greater size and bright yellow colour, the smaller number of 

 its whorls, its spiral sculpture. 



39. Altc^us diplochilus, n. sp. 



Testa late umhiUcata, depressa, suhdiscoidea^ solidula, suhtiliter sub' 

 distanter costulato-striata, nitidula^ ruhescenti- cornea ; spira hreviter co- 

 noidea apice oltuso. Anfr. 4i convexi, ultimus ad peripheriam, ohtuse 

 angulatus, lasi valde inflatus, gibbus, ab apertura sat remote {ca. 2 miU.)^ 

 profande constrictus^ dein tumidulus, sub tubulo suturali brevi ca. \ mill, 

 longo dense costulatus, ad aperturam glabratus, valde deflexus. Apertura 

 maxima obligua^ subcircnlaris, peristoma duplex, internum continuum, 

 expanswn, externum ab illo sulco distincto separatum, latissime expansum. 

 Diam. maj. 4, min. 3, alt. 2 mill. 



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



40. Altcjiub oligopleuris, n. sp. 



Testa sat aperte umbilicata, depressa, subdiscoidea, distanter et minute 

 costulata, albescens, nitidula, spira brevissime conoidea, apice obtuse. 

 Anfr. 3|- — 4 convexi, ultimus basi inflatus, gibbus, ab apertura sat remote 

 constrictus, dein tumidulus, subglabratus, ad aperturam subito deflexus, 

 sub tubulo suturali brevissimo densissime costulatus. Apertura tnaxime 

 obliq_ua, sub circular is, peristoma duplex, internum porrectum, duplicatum, 

 externum sulco distincto ab illo separatum, expansum, reflexiusoulum. 

 Diam. maj. 2i, min. If, alt. IJ mill. 



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



