MOLLUSCA OF INDIA. 347 



Original description : — " Testa umhilicata, ovato-conicd, Icevigata, 

 Tiic illic striatula, striis ventriculi confertis, ad uinbiJicam striatida^ 

 hyaJinal ; spira elevato-conica, suiura profunda, apice ocutiuscido; 

 anfractihus 5, valde convexis, ultimo compresso-rotundato, pone stric- 

 turam modice tumido, tubulum suttirtdem brevissimum gerente, p>one 

 aperturam rursus tumidido ; ajjertiwa obliqna, subcircidari, peri- 

 stomate simplici, tenui, undulato, expansiusculo , subrejiexo, superm 

 leviter maryinato. 



" Operc. 



" Diam. major 4, minor 3, axis 4, long. 5 mm. 



" Habitat in valle Rungiin." 



" This is one of the most elevated in the s])ire among tlie known 

 Himalayan AJi/aei. The specimens sent are all weathered, but 

 present no evidence of any considerable sculpture or colouring. 

 The very sliort sutural tube is a character shaved by otiphorus and 

 coi)st7'ictus ; and altogether the shell is deticient in ptominent 

 features, although perfectly distinct from any of its allies, especially 

 in its aperture (sinuous, and at its upper angle emarginate), its 

 wider umbilicus, plainer sculpture, and more compressed whorls." 



I have it from Damsaug, Daliug District, No. 2504 B.M. 



Alyc^us (Ctcloryx) constricxus, Bs. (Plate CXLVII. figs. 4, 

 4 a.) 



Benson {Cydostoma\ A. M. N. H. ser. 2, vol. viii. (1851) p. 188. 



Pir. JMon. Pneum. vol, ii. p. 35. 



Kiister ed. Chemn. {Ci/dostoma) pi. xlix. figs, 24, 25. 



W. T. Blf. A. M. N.'H. June 1864, p. 458 (section ii. type 

 species); H. & T. Conch. Ind. 1876, p, 39, pL xcv. figs. 1-4; 

 Nevill, Hand-1. i. 1878, p. 294 ; Theobald, Cat. L. & F. W. Moll. 



B. I. 1876, p. 39. 



Original description : — " Testa perforata, ovato-conica, glabra, 

 costis angustis obliquis distantibus muiiita, translucente, albida vel 

 rufida ; spira elongato-conica, apice obtuso, sutura valde impressa ; 

 aiifractibus 4 rotundatis, superiorihiis glabris, sequentibus remote 

 costulatis, ultimo max confertissime costtdato-siriata, p>onc o perturani 

 strangiduto, antieeque late constricto ; apertura circidari, vertiadi, 

 I longitudinis (pquante, peristom:ite undique rejiexo ; opercido tes- 

 taceo, midtispirato sutura inconspicua. 



"Diara. 2, alt. 3| mill. 



" Hab. ad Barjiling Himalayas Sikkiraensis. 



" This shell has apparently an aflinity with the Philippine 



C. minus of Sowerby, but differs in its more tapering form, 

 smaller size, perforation, diverse sculpture, and in the strangulation 

 of the last whorl behind the aperture, in which feature it exldbits 

 an approach to the more shortened C. gibbum, Fe'r., from Turon in 

 Cochin China, and to the depressed C. stramiidatum, Hutton, so 

 abundant in the more western portion of the Himalaya." 



In A. M. N. H. Oct. 1852, vol. x. p. 271, this species is referred 

 to again by Mr. Benson : — 



