116 MB. E, A. SMITH our LAND-SHELLS PEOM [Feb. 5, 



48. Pteroctclos latilabrum. (Plate III. figs. 23-25.) 



Testa P. tenuilabiato similis, seel spira minus depressa, umhilico 

 pi'ofuiidiore, paulum contractiore, superficie haud corrugata, 

 lahro latins e.ipanso, opercido nucleum versus arctixis convoluto. 



Hah. Gomanton Hill, N, Borneo, 



The very broad, thin, light brown or lilac-brown lip is in itself 

 sufficient to distinguish this species. Most of the specimens are of 

 a pale yellowish-olive tint, varied above with radiating jagged and 

 zigzag red lines. Others, however, are of a deeper reddish-brown 

 colour. The epidermis is smoother and inore silky than that of 

 P. teiiuilahiatus, and the peculiar wrinkling of the surface of that 

 species is entirely absent in the present form. 



ALlCyDUS. 



Ten species of this genus are now known from Borneo, namely — 

 (jlobosits, H. Ad., gatbamis, Godwin-Austen, liosei, G.-A., everetti, 

 G.-A., speeus, G.-A., spiracellum, Adams & Eeeve, broti, Aldrich, 

 dohrni, Boettger (=hochstette7-i. Martens nou Pfeiffer), rimatus, 

 Bttgr., and fultoni, Moellendorff. 



Of these, A. everetti and A. broti may be synonymous* ; and 

 A. fultoni has not yet been described, but the diagnosis (given on 

 p. il7) has been kindly furnished by Dr. von Moellendorff. 



49. Altc.^us globosus, H. Adams. 



Alyaeus ylohosus, H. Ad. Proc. Zool. Soc. 1870, p. 794 ; Godwin- 

 Austen, op. cit. 1889, p. 346, pi. xxxvii. figs. 3, 3 a. 

 Hob. Busau and Bau, Sarawak {A. Everett). 



Var. MULUATf A. Like the typical form, but having the peristome 

 less produced into a tongue-like projection over the umbilicus. 

 Hab. Mulu INIountain (A. Everett). 



Var. EABOifGENSis. A trifle larger and more globose than type, 

 pale straw-colour or reddish ; peristome as in var. muluana. 

 Diam. maj. 5| millim., alt. 5^. 



Hab. Mount Eabong, Sarawak (A. Everett). 



Var. KiNA-BALUANA. Not quite so globose as type ; spire 

 taller, aperture smaller ; peristome with even less production over 

 the umbilicus than in the two preceding varieties : colour same as 

 var. rabow/ensis. 



Hab. Kina Balu, N. Borneo (A. Everett). 



Var. PYGMiEA. Like var. muluana in miniature, but more coarsely 

 and distantly lamellated, and with the peristome even less bent 

 back over umbilicus. Diam. maj. 3| millim., alt. 31. 



Hab. Mulu Mountain. 



1 Since this was written, specimens of A. everetti, sent by Mr. Fulton, have 

 been compared by Mr. Aldrich with his A. broti, and he has written, saying 

 "they are the same thing.'" The diam. 7 uim. was a mistake, and should be 

 "about 4i mm." 



