1891.] THE SHELLS OF PERAK. 331 



a small white Patula-like shell, which from its fine and regular 

 striation, the silky aspect, and the inner varices must be an im- 

 mature Streptaxis, but not identical with the above species. It has 

 a diameter of only 3 mm. and shows already 5| whorls. 



2. ENNEA(MlCROSTROPHIA)PERAKENSIS,Godw.-Aust. & G. Nev. 



(Plate XXX. figs. 1, 1 «.) 



Ennea peraTcensis, Godw.-iVust. & G. Nevill, P. Z. S. 1879, p. 735, 

 t. lix. fig. 2 (juv.) ; V. MolldfF. J. As. Soc. Beng. Iv. 1886, p. 300 ; 

 Ancey, Bull. Soc. Mai. Fr. v. 1888, p. 341. 



Bukit Pondong (^Hungerford). 



In the remarks on the name of the subgenus to which this 

 species belongs, I have committed the error of writing Martensia, 

 Nevill, instead of Nevillia, Martens. The latter name has been 

 given by Prof, von Martens to a group of Mascarene Enneas (Beitr. 

 Faun. Maur. 1880), but it was preoccupied by H. Adams (P. Z. S. 

 1868, p. 289) for a genus of the Rissoidse. The group, which 

 comprises a number of Indian, Chinese, and Mascarene species, 

 I have renamed Microstrophia (Jahrb. deutsch. malakoz. Ges. xiv. 

 1887, p. 22). The Perak species is closely allied to E. stenopylis, 

 Bens. 



3. Ennea (Microstrophia) hungerfordiana, v. Molldff. 

 (Plate XXX. figs. 2, 2 a.) 



Ennea hungerfordiana, v. MolldfF. 1. c. p. 301. 

 Bukit Pondong {Hungerford). 



4. Ennea (Microstrophia) subcylindrica, v. Molldff. 

 (Plate XXX. fig. 3.) 



T. anguste perforata, fere cylindracea, albido-hyalina; spira 

 superne conoideo-convexa, apice obtuse, turn cylindracea. Anfr. 

 7, convexiusculi, costzdis verticalibus subdistantibus — 36 in 

 anfractu penultimo — regulariter sculpti, ultimus angustior, basi 

 subcompressus, pauUum ascendens. Apertura verticalis, rotun- 

 dato-tetragona ; peristoma latiuscule expansum, albo-calloaum, 

 superne continuum, subsolutum, sinuatum, margo dexter ad in- 

 sertionem subito attenuatus. Lamella parietalis valida, longe 

 intrans. 



Alt. 2*75, diam. 1 mm. 



Hab. ad Bukit Pondong leg. cl. R. Hungerford. 



Fam. Vitrinid^. 

 .5, Vitrina ntjcleata, Stol. 



Vitrina nucleata, Stol. J. As. Soc. Beng. xlii. 1873, p. 23, t. i. 

 fig. 12, t. ii. figs. 4-6. 



Helicarion nucleatus, Tryon, Man. Pulin. i. p. 177, t. 41. 

 figs. 49-51. 



Bukit Pondong (Hungerford) ; Penang (Stolicska). 



Tryon places this species in Helicarion, whilst Stoliczka distinctly 

 states it to be a Vitrina. 



