457 



of tlicin is still youiiL^ the otlirr oiu; is ;ulull, l)iil has a laiL;c hole in the spiic and the 

 coliunollar margin is hrokcMi ; it is aliicul to /'. rotatoria v. d. lUiscli, /cidonipliala MlIdlT. and 

 epiplatia iMlldtT., but ina\- he at i)ncc dislinjruisluul ])y its very convex base. If jjlaccd on a 

 level surface, the new species has its u|)])er surface niufh nion; inclined tjian any of the allied 

 forms, it has two worls less {epiplatia has ev(>n 6'/., whorl). 



Cochlostyla I'cnissac. 



1. Cochlostyla (Corasia) pud la Ih-oderip var. sitdpueiia l'ils])ry. 



Tryon/Pilsbry. Man. of Conch. 2>l Scries, Vol. VII, p. I2i, PI. 24, fi<,r. 19—21, 24, 26. 

 Pfeiffer. Nov. Conch. Vol. IV, p. 114, PI. 126, fig. 6, 7, (lais var.). 

 Fulton. Proc. Mai. Soc. Lond. Vol. Ill, 1899, P- 214, {lais). 



Stat. 133. Lining, Salibabu-island. 12 Spec. 



Of the 12 specimens, there is but one that |)Ossesses only the peripheral band, the other 

 specimens have a larger or smaller number of narrow lines of lighter colour, as in Pfeiffer's 

 figure (1. c.) and as those of Pilsbry. The variety, originally recorded from Tukan Besi by 

 Pfeiffer, has already been recorded by Fulton as lais, from Talaut, by Pilsijky from the 

 Philippines. A specimen from Fulton in my private collection is multifasciate, but otherwise 

 perfectly agrees with the Siboga-specimens. 



2. Cochlostyla (Crystallopsis) iiajas Pfeiffer. 



Pfeiffer. Symb. Vol. III. p. 71. 



Monogr. Heliceorum, Vol. I, p. 261. 



Philippi. Abb. u. Beschr. neuer od. wenig gekannter Conch. Vol. II, p. 185, PI. 9, fig. 5. 



Reeve. Conch. Ic. Vol. VII, Helix, fig. 484. 



v. Martens. Ostas. Landschn. p. 330, PL 18, fig. 4. 



Stat. 133. Lirung, Salibabu-island. 4 Spec. 



The only species hitherto known from the Talaut-isles, belonging to the same section, 

 is, as far as I am aware, C. physalis Pf. ; the Siboga-specimens however, do not agree wath 

 Pfeiffer's description or figure of the latter species, but very well with his najas, especially 

 with Philippi's figure, they have the fine spiral striae, mentioned by the last named author, 

 but not by Pfeiffer or v. Martens. The narrow, yellowish, subsutural band, figured by Philippi, 

 which v. Martens could not find, is present in some of the specimens; it seems to be more 

 a layer of enamel below the suture, visible by the transparency of the shell, than a true 

 colour-band. 



Amphidromus Albers. 



I. Auiphidrovms interrnptus Miiller var. infraviridis v. Martens. 



V. Martens. Ostas. Landschn. p. 344, 347, PI. 20, fig. 2, 5, 8. 



Tryon/Pilsbry. Man. of Conch. 2d Series, Vol. XIII, p. 151, PL 52, fig. 59 — 65. 



Stat. 16. Bay of Kankamaraan, South coast of Kangeang. 5 Spec. 



5 



