250 PROCEEDINGS OF THE ACADEMY OF 



cuttino- point. This is better shown in the figures than can be 

 expressed in words. 



The genitalia of this species is figured on pi. XIX., fig. 2. The 

 testicle (t) is small and imbedded in the upper lobe of the liver ; 

 the epididymis (ep.) is long and greatly convoluted near its 

 junction with the oviduct ; the accessory gland (ace.) is composed 

 of several tubular cseca of unequal length ; the ovary (ou.) is very 

 large and sabre-shaped ; the oviduct (ovid.) is narrow, but slightly 

 convoluted; the genital bladder (g. b.) is large, globular, with a 

 short, stout duct entering the vagina at about the middle of its 

 length ; the penis sac (p. s.) is large, with a central constriction, 

 tapering towards the apex, where the vas deferens (v. d.) enters, 

 and bearing the insertion of the retractor muscle (r.) below its 

 apex ; it enters the cloaca close to the external orifice. 



Helix (Caracolus) Arangiana, Poey. 



Cuba. Mr. Arango to Mr. Thomas Bland. 



Jaw (pi. XXL, fig. 2) greatly arched, ends blunt, scarcely acu- 

 minated ; anterior surface without ribs ; cutting margin with a 

 blunt median projection. 



Lingual membrane very long and narrow (pi. XXL, fig. 1), with 

 33 1 33 teeth, of same type as in H. sagemon (see above). The 

 lower edge of the base of attachment appears delicately fringed. 



Genitalia as in H. sagemon (see above). 



Helix (Pomatia) Sieboldtiana, Pfr. 



Japan. Received from Dr. W. D. Hartman. 



Jaw high, arched, ends but little attenuated, blunt; anterior 

 surface with eight stout, separated ribs, denticulating either 

 margin ; no median projection to the cutting margin. 



Lingual membrane long and narrow (pi. XXL, fig. 8) ; teeth 

 39 1 39, with 21 perfect laterals; centrals with base of attach- 

 ment long, narrow, the lower lateral angles somewhat expanded, 

 but blunt ; median cusp long, stout, cutting point stout, blunt, 

 not reaching the lower edge of the base of attachment ; side cusps 

 obsolete ; no side cutting points. Laterals like the centrals, but 

 longer and wider, and unsymmetrical as usual ; the fifteenth lateral 

 has a side cutting point. The transition to marginals formed as 

 usual by the greater proportional development and splitting of the 

 cutting point. Marginals low, wide, with one broad, oblique, 

 bluntly bifid cutting point, and one short, side cutting point. 



