1872.] F. Stoliozka — On the Cyclostomacea of Penang. 267 
exactly as in the South Indian Pteroc. (My xo stoma) tristts, Blf., and which 
canal is the origin of the sutural tube, becoming fully developed in the 
more adult shell, as soon as the end of the last whorl begins to detach itself 
from the previous one. 
Sab. Penang ; I have only obtained about 15 specimens of this species, 
also under dead leaves on the ground in dense jungle together with the last, 
which is, however, the more common one. 
The animal is entirely of a rather pale grey colour, nearly smooth, slight- 
ly mottled with darker ; tentacles blackish, with a few darker spots about 
and between their bases, entirely black at tip ; rostrum cleft, wrinkled, with a 
pale lip ; lateral pedal row rather indistinct, as also in the preceding species. 
Pam. PuriNiDiE. 
Paphaulus Zoraini, which was described by Pfeiffer from Penang out 
of Cuming’s collection, was not met with by me. 
PuPINA ATJEEOLA, n. sp. PI. X, Figs. 11-12 
Pm testa oblique ovata, apicc breviter sub-acuta, glaberrima, politissima, 
moderate solida, intense vel luteole succinea, prope peristoma aurea ; an- 
fractibus sex, convexiusculis, in adultis sutura indistinct a junctis, primis 
duobus sub-mammillatis, ultimo spira breviore, valde descendente ; apertura 
parva, circulari, labio inerassato, sulco satis prof undo ah anf penultimo 
separato ; incisionibus angustis sed prof midis ; labro antics sensim producto, 
extus paulum inerassato, aureo tincto. Operculum orbiculare, album, corneum, 
ad utrumque latus paulo coneavum, ex lamella sprialiter torla tenuissima 
compositum, nucleo depresse circulari, paullulum inerassato instructum. 
Long, testw 8'8, lat. ad medium 5, diam. apert. ext. 2 3 m.m. 
Hab. Penang ; haud f requeue. 
This species is closely allied to P. aurea. Hinds, differing from it by a 
smaller aperture, a more laterally produced, shorter and slightly contracted 
last whorl. The solidity of the shell and the intensity of coloration naturally 
varies with age ; young specimens are thin, and nearly transparent, pale 
straw-coloured, the suture is distinctly impressed and the outer lip very 
slightly produced. In adolescent specimens the upper labial rib is rather 
distant from the posterior anglo of the mouth (see fig 11), as in the 
Tenaserim P. arula, hut the Penang shell is shorter and stouter. Old 
specimens are entirely covered with a polished glaze, and are intensely or 
yellowish rufous brown, with a yellow inner and outer peristome. 
The animal is of the usual Cyclophorid type, uniform, intense or greyish 
black, paler along the sides of the foot, which is of about the same length 
as that of the shell. 
35 
