APPENDIX. 503 



APPENDIX, 



To follow No. 186, p. 213 : 



Plectotropis arakanensis, Theobald. 



Helix tapeina, var. arakanensis, Theobald, Conch. Ind. 1870, pi. 15, 



tig. 10. 

 Helix (Plectrotopis) arakanensis, Nevill. Hand List, i, 1878, p. 73. 



Shell conoid, rather narrowly deeply utnbilicated, rather solid, 

 rufous corneous, finely and somewhat irregularly striated, densely 

 covered with extremely minute granules above and below. Spire 

 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 flattened 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, 

 very shortly and slightly descending in front. Aperture oblique, 

 subhastate ; 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 arruate, columellar obliquely ascending, slightly 

 dilated, but scarcely overhanging the moderate umbilicus. 



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



Hob. Burma : Arakan Hills (Kurz, Blanford) ; Moulmain 

 (StoliczJca). 



The present 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 the 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. It was labelled 

 " Burma." The specimen figured in Conch. Ind. is a trifle larger, 

 measuring 13'5 mm. in diameter. 



DOUBTFUL AXD SPURIOUS RECORDS. 



Bulimus folliculas, Pfeiffer, Symb. Hist. Helic. iii, 1846, p. 83; 

 ibid., Mon. Helic. Viv. ii, 1848, p. 81 ; Reeve, Conch. Icon, v, 

 Bulimus, 1850, pi. 87, fig. 644. 



When described by Pfeiffer, he stated it was received as 

 Caryclihun costatum, Mutton, from Metcalfe. Me makes no 



