106 LAXT) AND FRF.SHWATF.R 



Kadula (fig. 2 d) formula : 



35 . 1 . 10 . 1 . 10 . 1 . 35 

 or 46 . 1 . 46 



Central tooth rather short, with small blunt basal cusps ; the 

 admedian teeth on quadrate plates, blunt cusps low down on outer 

 margin ; the laterals are long, aculeate, and slightly curved, 

 becoming verj- short on the outer margin. 



This radula is very different from that of typical Macrochlamys, 

 and so is the genitalia, and if it should be common to all the 

 Andaman species, it would constitute them a good subsection. 



Aculeate laterals have been noticed in the following species : — 

 M. jainiana ; M. castaneolahiata \ in M. tngwinm the outermost 

 teeth ; and in J/, dalingensis they are nearly aculeate. 



Macrochlamys segttax, Bs, (Plate CVl. figs. 1-1 <:?; sequax?^ 

 figs. 3-3 a.) 



Macrocldamys sequax, Bs. A. M. JST. H. 1859. iii. p. 270 ; Pfr. Mon. 

 Hel. vol. V. p. 118 ; Hanley, Conch. Ind. p. 28, \A. Ixiii. figs. 1, 2, 3. 



Macrocldamys (sec. A) seqiia.r, Theob. Suppl. Cat. p. 18. 



Nanina {Macrocldamys) sequax, Nevill, Hand-list, p. 23. 



Helix sequax, Pfr. Malak. Blatt. 1859, p. 23. no. 346 a. 



Macrocldamys (sec. A. Ecarinatte) sequax, Clessin, Nomen. Helic. 

 p. 44. 



Original description : — " Testa 2^erforata, siibconoideo-depressa, 

 fere tenui, oblique sfriatida, sub lente confertissime spiraliter obsolete 

 striata, nitida, diajyliana, livide olivaceo-comea ; spira depresso- 

 conoidea, lateribus convexiuscidis, apice obtuso, sutura imjiressa, 

 subcanaliculato-margijicitn ; anfractibus 5|, convexiusculis, sensim. 

 arcrescentihus, ultimo antice (cetate) vix descendente, ad perijdieriam 

 comi:>resse rottinclato, sidttus convexiusculo, medio excavato ; apertura 

 obliqua, transversim. lunata, p>eristomate tenui, recto, marr/ine basalt 

 ■arcitaio, columellari breviter rejlexo. 



" Diam. major 18, minor 15, axis 7 mill. 



" Habitat copiose ad Darjiling et in valle Rungun [Rungnu] 

 (7000 et 4000 ped. alt.). 



" Several years ago, a series of specimens was sent to me by 

 Mr. Robert Trotter, with other fine species procured by him at 

 Darjiling, and described in former Numbers of the ' Annals.' The 

 shell rarely attains the extreme size noted ; and, from its fragility, 

 the lip is seldom perfect. A livid greenish olivaceous tint is 

 observable in most specimens, which, with the slight concavity of 

 the sides of the spire, serves to distinguish the species at the first 

 glance from others of the type of Ku^iina vitrinoides, Desh. 

 Mr. W. T. Blanford found it at elevations varying from 4000 

 to 7000 feet, and states that it is also met with at the foot of the 

 Khasia Hills ; but I cannot find a specimen among the immature 

 Naninoid shells received from that quarter through Mr. Theobald, 

 which can be with certainty assigned to this form." 



