580 PROCEEDINGS OF THE ACADEMY OF [Dec, 



Tudora armata (C. B. Ad.). 



Rockfort. Upon visiting this locality after a rain, the individuals 

 of this species were so plentiful that their movement could be heard 

 as a continuous rustling of the dry fallen leaves under the trees. 

 They were pairing actively. During dry times large numbers were 

 seen collected under stones in a resting condition. 

 Adamsiella grayana Pfr. 



Stony Hill. 



HELICINID^J. 

 Eutrochatella pulchella (Gray). 



Stony Hill. 



3. Descriptions of New Species, etc. 



Pleurodonte aouta semperfluens n. subsp. PI. XLIII, figs. 15, 16. 



This form is rather thinner than P. a. goniasmos, with the peripheral 

 angle in the last third of the last whorl becoming subobsolete or the 

 periphery may be flattened and obliquely weakly corrugated; the 

 last whorl is convex or swollen below the suture, as in P. subacuta, not 

 flattened as in acuta and goniasmos. The columella is longer than in 

 goniasmos, basal lip generally more erect, white, with a brown edge. 

 Base green (becoming dull greenish-brown with age) , with a chestnut 

 zone below the periphery. Aperture broadly open, truncate-oval, 

 the outer arc broadly rounded; teeth small, one or two, the inner 

 tooth inconstant. 



Alt. 28, diam. 51.3 mm. Constant Spring. 

 " 26, " 44 " Constant Spring. 

 " 30.5, " 57 " Stony Hill. 



Only "dead" shells were picked up on Stony Hill. They are 

 much larger than the types from Constant Spring. Shells from Bog 

 Walk, collected by Mr. Wm. J. Fox in 1891, are evidently referable 

 to the same race. 

 Sagda. 



Beck based the genus Sagda on two species: S. alveolata Beck, 

 based on Ferussac, Histoire, etc., pi. 51a, fig. 1 (a false reference, 

 possibly intended for pi. 51b, fig. 4), and S. australis = S. cookiana 

 (Gmel.). The first of these was selected as type of the genus by 

 Gray and Herrmannsen, in 1847; but since its identity is uncertain, no 

 later author having determined the species, the subsequent selection 

 of S. cookiana Gmel. as type by von Martens, should be accepted. 



Much confusion in collections existed among the larger species for 



