288 PUPILLIDjE. 



In addition, the strong and close costulation differentiates 

 P.filosa from its nearest allies. 



257. Pupilla brevicostis, Benson. 



Pupa brevicostis, Benson, A. M. N. H. ser. 2, iv, 1849, p. 127 ; 



Kiister, Conch.-Cab., Pupa, 1852, p. 136, pi. 17, tigs. 20-22 ; 



Pfeiffer, Mon. Helic. Viv. iii, 1853, p. 560. 



Vertigo (Alcea) brevicostis, Adams, Gen. Rec. Moll, ii, 1855, p. 172. 

 Pupa ( Vertigo] brevicostis, Pfeiffer, Malak. Blatt. ii, 1856, p. 177 ; 



Nevill, Hand List, i, 1878, p. 197. 

 Pupa (Pupilla) brevicostis, Pfeiffer & Clessin, Nomencl. Helic. Viv. 



1881, p. 355. 



Original description : " T. rimato-perforata, cylindraceo-ovata, 

 cornea, apice obtuso ; anfractibus 4J, longitudine celeriter 

 crescentibus ; ultimo antice nou ascendente, g longitudinis testa? 

 sequante, superioribus convexis, superne remote semicostulatis, 

 ultimo et penultimo subplantilatis, dimidioque inferiori caeterorum 

 sericeis, mutius ; apertura rotundato-ovata, 5-6 plicata ; plica 1 

 angulari, brevi : secunda parietali, profundiore, obliqua ; columel- 

 lari unica ; palatalibus 2-3 proi'undis ; peristomate expanse, 

 subreflexo. 



" Long. Ik mill., lat. vix 1 mill." (Benson.) 



Hob. India : Barrackpore, Bengal (Bacon). 



" Taken by Dr. J. P. Bacon on the trunk of a tamarind tree at 

 the Cantonment of Barrackpore, near Calcutta, during the rainy 

 season of 1848. Out of several individuals forwarded to me 

 overland, by letter in a quill, two reached me alive, and creeping 

 about when supplied with moisture enabled me to verify their 

 affinities. The lower pair of tentacula is deficient or incon- 

 spicuous, as in Vertigo ; the upper pair carry the eyes at their 

 summits ; the shell is often carried at an angle of 45/' (Benson.) 



Fig 104. Pupilla brevicostis. \ 2 . 



Nevill (Hand List, i, p. 197) was of opinion that Pupa indica, 

 Pfeiffer [barraclcporensis, mihi] and the present species were 

 identical. A comparison of specimens does not bear out this 

 view, as Pfeiffer's species is larger and more cylindrical, the suture 

 is deeper, it has half a whorl more, and is provided only with 

 four plicae in the apertum. 



The figure given by Kiister is not a very good representation of 

 the shell, and as this is the only one published I have considered 

 it desirable once more to illustrate the species from a specimen in 



