MOLLUSCA OF INDIA. 49 



black ; it was not well preserved, but the shell-lobes were seen. 

 The speciflc distinctness of this shell is well established, as compared 

 with somewhat similar glassy shells from the Gangetic plain. 



The centre teeth are long, cuspid on the outer side ; the laterals 

 bicuspid, inner point the longest ; the ten or twelve outermost are 

 very small : — 



30 . 2 . 10 . 1 . 10 . 2 . 30 

 42 . 1 . 42 



The jaw is moderately curved, with a small central projection. 

 (Compare this with radula of M. hardiviclcei, Vol. I. p. 106.) 



Macrochlamys lhotaensis, G.-A. (Part IV. p. 107, Plate XXIII. 

 fig- 0)- 



=.M. marshalli, Tryon. 



My specific name will not stand, having been used before for a 

 Kaliella (Part II. p. 22). Tryon points this out, and altered it as 

 above in his ' Manual of Conch.' pt. ii. (Zonitidae) p. 101 (1886). 



Macrochlamys? resplendens, Phil. (Part IV. p. 109, Plate XXVI. 

 fig. 1). 



There is no longer any doubt as to the true generic position of 

 this shell, as I have since received some well-preserved specimens 

 from Mergui. 



The right shell-lobe is well developed, as is also the left, of same 

 shape and position as in the typical species. The neek-lobes are 

 small. 



The male organ has a strong retractor muscle and a very long 

 flagellum-like kalk-sac. The amatorial organ is large, and the dart 

 bent below near the point, as in MJiardwickei (Vol. I. Plate XXVIII. 

 fig. la); it terminates in a blunt muscular point, the "Knorpel- 

 papille " of Semper. The spermatheca is very long, with a small 

 pear-shaped end, its length bearing a relative proportion to that of 

 the flagellum and the spermatophore when it is formed. 



The radula formula is 



42 . 2 . 10 . 1 . 10 . 2 . 42 

 54 . 1 . 54 



Central tooth long, narrow, and pointed, with two blunt not well- 

 developed cusps at the base ; the medials are also long and pointed, 

 with one outer basal cusp ; the laterals are bicuspid, the inner point 

 being the longest ; they become very long and curved, and diminish 

 rapidly to the margin of the lingual ribbon. Jaw not seen. 



This species and my M. atricolor (see Part IV. p. 113) of the North 

 Cachar Hills, Munipur, and Northern Burmah, have been considered 

 by some conchologists as one and the same. Under M. atricolor 

 Tryon, in his ' Manual of Conchology,' 2nd ser. pt. ii. (Zonitidae) 

 p. 92, remarks, " is closely allied to resplendens, Phil. ; perhaps a 

 mere variety of that species." I always considered the difterences 



g2 



