154 A MANUAL OF AMERICAN LAND SHELLS. 



jaw were inucli more narrow and less projecting: at the upper and lower 

 margins. There is more difference between these than is usually found 

 in different individuals of the same species. 



Lingual membrane : see page 152. 



Genitalia figured on Plate XIV, Fig. D, Terr. Moll., V. The epididymis 

 is very long, convoluted in the lower half of its length, straight above. 

 It runs free for a long distance outside the membrane which covers the 

 oviduct, before entering into the liver, where it joins the testicle. The 

 latter is imbedded in the liver, near its upper extremity. It is com- 

 posed of several (apparently 0) separated fasciculi of blind tubes. The 

 vas deferens enters the penis sac about its middle, not at its end. The 

 penis sac is small, cylindrical. It terminates in a small bulb. There 

 is no trace of lobuli in the ovary, but its under, concave surface is re- 

 ticulated. The genital bladder is oval ; its duct is long, free only for a 

 short distance, then attached to the oviduct the whole length of the 

 latter ; at its base it becomes again free, and enters the vagina below the 

 terminus of the oviduct. At about the same point the vagina receives 

 the mouth of a long, broad, rounded organ. This organ is hollow. Its 

 use is unknown to me; it may be a dart sac or a prostate gland. The 

 vagina is very long ; the penis enters it at its lower extremity, near the 

 exterior opening of the genitalia. 



EliPARYPHA, Hartm. 



Animal heliciform ; mantle subcentral ; other characters as in Fatula. 



Shell usually perforate, depressed-globose, corneo-calcareous, banded; 

 whorls 5, the upper ones flattened, carinate, the last inflated; aperture 

 dilate-lunar, often labiate within, its columellar margin reflexed. 



Inhabits the countries around the Mediterranean, Canaries, Madeira, 

 &c. In North America it is represented in Lower California, one spe- 

 cies being actually found in the California Region. 



j-ir; 13(5 Jaw high, arcuate, ends but little attenuated, blunt; 



cutting margin without median projection ; anterior 

 surface with a few ( about 5 in Tryoni) stout, sepa- 

 '&tP^^ "^^^^ rated, unequal ribs, deeply deuticulating either mar- 



jaw of H. Tryoni. ^^^ ^^ ^^^^^^j j^^ ^^^^^ ^^ ^^^ spccics of EcUx, &c., ex- 

 amined by me, the number, size, and disposition of the ribs vary in 

 different individuals of the only si)ecies of Uirparypha I have examined, 

 jE7. Tryoni. Six jaws are figured (Fig. 138), all differing as to the ribs. • 



