1886.] O. F. von MoUendorff— T/ie LandsJiells of PeraJc. 303 



Penang (StoUczka). Mr. Hnngerford found two badly preserved 

 specimens at Buket Pondong which agree entirely with Stoliczka's 

 figure and description. 



HELICID^. 



13. Helix (Teachia) malayana, n. sp. 



T. latiuscule umhilicataj depressa, tenuis, pilis hrevissimis in lineas 

 regulares valde approximatas dispositis Tiirsuta, rufohrunnea ; anfr. h\ 

 perconvexi sutura valde impressa juncti, spiram fere planam apice vix 

 prominulo efficientes, ultmius maximus, valde injiatus, antice hrevUer 

 descendens, circa umhilicum subacute angulatus, apertura non valde oh- 

 liqim, rotundato-lunaris, peristoma tenue, hreviter expansum, vix reflexius- 

 culum, sinuosiom, roseum. Diam. maj. 23, min. 18, alt. 14 mill. 



Hab. — In regione Perak, leg. cl. R. Hungerford. 



I have little doubt that this is the form mentioned by Crosse (J. de 

 Conch., 1879, p. 336) as H. (Planispira) hreviseta, Pfr., from Buket 

 Pondong, but judging from Pfeiffer's diagnosis — all I can compare at 

 present — I do not believe that the Perak form can be combined with 

 Pfeiffer's Siamese species. The latter is pale yellow ("pallide fulvida "), 

 round the umbilicus only " subangulatus," the peristome is white, the 

 dimensions are 22 mill, diam., 10|^ mill, alt., there are only 5 whorls. 

 There appears to be a great deal of affinity, and the comparison of the 

 types may probably result in making the Perak form a variety of H. 

 hreviseta, Pfr., but for the present I prefer to give it a separate name. 



14. A second species of Trachia, of which only a few dead exam- 

 ples were found at Buket Pondong, is smaller, the whorls increase more 

 regularly and the last one is not so prominently large ; the spine is a 

 little more prominent, the angle round the umbilicus much more obtuse. 

 This is perhaps Trachia penangensis, Stol. 



15. Helix perakensis, Crosse. 

 Crosse, J. de Concli., xxvii, 1879, p. 199, t. viii, f. 4 (Geotrochus). 



Perak (Dr. Townsend), not found by Mr. Hungerford. I have 

 some doubts about its really being a Geotrochus, a group which has not 

 yet been observed in the Indian region. The figure gives the idea 

 rather of Satsuma (or Fruticotrochus, Kob.), which group is widely 

 spread in China, and might very well range into the Malay peninsula 

 hitherto so little explored. 



Mr. de Morgan's paper contains the following Helix : — 



