184 LAND AND FRESHWATEK 



where il- is attached to a glandular mass, this was much broken up. 

 but a large portion was seen enveloping a part of the spermatheca. 

 This long rope-like attachment to the dart-sac, which in the first 

 specimen had no attachment, left very much that was doubtful as 

 to what it could be ; the second specimen clears this up, and we are 

 presented with an amatorial organ similar in its main points to that 

 met with in the genus DyaJcia, particularly in that of I), striata var,, 

 lately described by me in the ' Proceedings of the Malacological 

 Society,' vol. vii. part 2, June 1906. This is an extremely interest- 

 ing point of resemblance — confined to one organ, and yet not shared 

 in by several important characters. In Dyakia there is a large 

 mucous pore, and the peripodial margin is fringed as in the Zonitidse 

 generally. There are no shell-lobes either. There are minor 

 details in the genitalia which may be noted : the spermatheca in 

 Di/al-ia is very small, the dart is calcareous. The radula is of the 

 same type in both, the laterals being aculeate. The penis in both 

 is of the same simple type. The radula of the Dafla form has 

 98 rows of teeth and the formula 



55 . 1 . 12 . 1 . 12 . 1 . 55 



68 . 1 . 68 



The centre tooth is tricuspid, the admedian teeth also tricuspid, the 

 inner cusp high up, the outer one lower down ; the 13th tooth 

 has no notch. All the laterals are shortish aculeate teeth, becoming 

 very small on the margin. 



The jaw is large, solid, convex on the edge, and rather straight in 

 the centre as opposed to the usual central projection. 



This species is so distinct both in external and internal known 

 characters that I have to create a new genus for its reception. 

 The points in which it resembles DyaMa are outweighed completely 

 by others, such as the form of the foot. I name it SxArFORDiA, 

 after Brigadier-General Stafford, who was in command of the puni- 

 tive force which entered the Dafla Hills for the first time in the 

 winter of 1874-75, and I have great pleasure in connecting his 

 name with one of the many new species I collected when serving 

 under him. 



Staffordia, nov. gen. (Plate OXIII.) 



Animal. Foot pointed, peripodial margin simple with a narrow 

 pale margin ; right and left shell-lobes present, both small. 

 Generative organs : dart-sac small, globose, with a long cord-like 

 attachment to a coronal gland ; penis simple; spermatheca long. 

 Kadula with aculeate laterals. 



The Dafla Hills, in which this very aberrant mollusk was found, 

 lie on and north of lat. 27° and between long. 93° 10' and 9^° 50' E., 

 at the base of the Eastern Himalaya. Nothing like it has been as 

 yet found iu any part of India or Eurmah. 



