APPENDIX. 503 



APPENDIX. 



To follow Xo. ISO, p. 213:— 



Plectotropis arakaiieiisis, Tlieolxdd. 



Helix tnpeina, vur. aralainensis, Theobald, Couch, liid. 1870, pi. lo, 



ti^-. 10. 

 llvlix I^Plectrufopis) aralcineHsis, Nevill. Ilaud List, i, 1878, p. 73. 



Shell conoid, rather narrowly deeply umbilicated, rather solid, 

 rut'ous corneous, finely and somewhat irreguhxrly striated, densely 

 covered with extremely ininute granules above and below. tSpire 

 convex, suture impressed in the early whorls, rather shallow in 

 the later ones, apex obtuse. Whorls 5|, the first three rather 

 convex, the later ones becoming gradually flatteued and slightly 

 concave near the lower suture, the underside of the last whorl 

 convex, distinctly concave near the sharp keel, which becomes 

 pinched near the aperture, a little dilated behind the peristome, 

 Aery shortly and slightly descending in front. Aperture oblique, 

 snbhastate ; margins slightly approximating, united by a very thin 

 callus on the parietal wall ; peristome slightly thickened and 

 reflexed, not expanded ; the upper margin slightly curved, outer 

 angular, basal an-uate, columellar obliquely ascending, slightly 

 dilated, but scarcely overhanging the moderate umbilicus. 



Major diam. 12-75, minor 11-75, alt. 7 mm. 



JIah. Burma : Arakan Hills (Kurz, Blanfonl) ; Mouhnain 

 (Stoliczka). 



The ])resent form, regarded as a variety of P. tapeina by 

 Theobald, is quite distinct. The umbilicus is narrower, the spire 

 is relatively higher and more convex, the last whorl is not con- 

 stricted below behind the peristome, the keel is considerably 

 sharper, and instead of close spirals tine shell is densely covered 

 with minute granules. 



The species has never been described and the foregoing 

 description has been drawn up from a specimen acquired by me 

 years ago at an auction sale with other shells. Ic was labelled 

 " Burma." The specimen figured in Couch. lud. is a trifle larger, 

 measuring 13'5 mm. in diameter. 



Doubtful axb Spurious Records, 



BaUmus foUiculaS, Pfeiffer, Symb. Hist. Helic. iii, 1846, p. S3 ; 

 ibid., Mon. Helic. Viv. ii, 184:8, p. 81 ; Reeve, Conch. Icon, v, 

 Bnlimus, 1850, pi. 87, fig. 644. 



When described by Pfeiffer, he stated it was received as 

 Ca/'l/chium costatiou, Hutton, from ^leteaU'e. He makes no 



