ALYC.EUS, 273 



remotis ornata, inter costulas striatula. Spira depresso-conica, 

 apice obtusiila, sutura irnpressa. Anfractus 3| convexi, ultimua 

 ad latus mediocriter tumidus, ibidem confertissime costulatus. 

 Spatium oonstrictum longuni, striatulum, medio tumiduiu. 

 Tubulum suturale mediocre, ^ peripherite subaequans. Apertura 

 obliqua, expandens, circularis ; peristoma ad anfractum penultimum 

 breviter interriiptum, luarginibus callo jiinctis, duplex ; externo ex- 

 pausulo, iiiterno breviter porrecto. Operc. corueum, multispirum, 

 externe perconcavum, nucleo centrali iiiterno promiiiente papillari. 



"Diain. maj. 4, min. 3.|, alt. 2i^,, ap. diam. 1| mm." 



Bah. India: Khasi Hills {Theobald). 



" I received two specimens u£ this species from Mr. Theobald 

 as A. hehes, Bens,, of which they were supposed to be young shells. 

 They, however, prove, on closer examination, to be fidly grown 

 and distinct, the slight swelling in the centre of the cousti'iction 

 contrasting strongly with the high I'ecurved i-idge in A. hehes. 

 This alone would shew the present to be a different species, but 

 it is also distinguished by its lower spire, narrower umbilicus, 

 smaller size, and thinner and interrupted peristome, the last 

 character not occurring in any other species of the genus. The 

 well-marked distant costulation of the upper whorls of A. theobahh 

 is entirely wanting in u-i. hebes. The operculum of the latter does 

 not appear to have been described. A single specimen in ray 

 possession is dark horny, indistinctly multispiral, extremely eon- 

 cave in front, and convex, almost conical, behind, and deficient ir 

 the central boss so prominent in most Alyccei. 



" Although there is a swelling in the centre of the constriction 

 in A. theobaldi, it does not amount to a marked ridge, such as 

 characterizes the typical forms of the section Charax of Mr. Benson, 

 e, g. A. sfifUfer, B. It is consequent])' not clear whether this 

 species should be classed with the members of that section, or 

 with tliose of the typical group. Several species indeed tend to 

 connect these two subdivisions, which more recent discoveries 

 have rendered less distinct than they appeared to be when first 

 described." {Blanford.) 



" This species is variable in size, retaining its principal 

 characters. Thus from the North Khasi Scarp, near Maotherichan 

 Trigonometrical Station, I obtained eight specimens far larger 

 than those from Clierra Poonjee. Three of the largest measure 

 5 mm. in diameter as against 4 from the last named locality. It 

 was found at Shillong and Jawai." (Godiuin- Austen.) 



Yar. solida, Godivin- Austen, 



Ali/cceus theobaldi, var. solidus, Godwin-Austen, Land & Freshw. 

 Moll. India, ii, 1914, p. 383, pi. 155 tig. 10. 



Ofifjinal description: — "Shell depressedly and conoidly globose, 

 openly umbilicated, solid; sculpture very distant, strong costu- 

 lation above, next sutural tube, which is not very long — there are 

 23 ribs, nearly twice as strong as in typical theobaldi, which has 



T 



