LIGUUS. Ixjii 



The genital system resembles that of Oxystyla, except that the 

 appendix is decidedly larger, though of the same character. The 

 penis retractor muscle is inserted on the floor of the lung. The duct 

 of the spermatheca is as long as the oviduct. The right eye re- 

 .tractor passes between male and female branches of the genitalia. 



The jaw (pi. 60, fig. 17, L. fasciatus, Miami, Fla.) is similar to 

 that of Oxystyla, composed of 16 plates, the median one small and 

 triangular. 



The radula is very broad, as in other Orthalicince, with broadly 

 V-shaped rows of teeth. The teeth are somewhat less numerous 

 than in Oxystyla, L. fasciatus having from 76.1.76 in a specimen I 

 counted, to 69.1.69 according to Binney. The same author found 

 40.1.40 teeth in L. virgineus. The teeth are closely crowded near 

 the middle of the radula (fig. 23), much more separated near the 

 margins (fig. 23). The cusps of the central and first lateral teeth of 

 L. fasciatus are elongate and pointed on the younger (posterior) end 

 of the radula of a specimen from Miami, Fla. (pi. 61, fig. 22); over 

 the median, functional portion of the radula the cusps are more ob- 

 tuse and rounded (pi. 61, fig. 23); and anteriorly still more so. The 

 laterals become wider, with a much broader, obtuse cusp; the ecto- 

 cone, at first indicated by a slight sinuation, gradually becoming sepa- 

 rated from the mesocone on the outer portions of the radula (pi. 61, 

 fig. 23, teeth 67-69). The entocone is likewise indicated by a more 

 or less pronounced notch on the outer teeth. In a radula of the same 

 species, from Cardenas, Cuba, the central and lateral teeth are more 

 obtuse, and Binney so figures them. In L. virgineus the central and 

 first two lateral teeth were found to have long and somewhat pointed 

 cusps (pi. 56, fig. 56, after Binney, central with 5 adjacent laterals, 

 and the 39th and 40th teeth). 



L. virgineus is from Haiti, the others from Cuba; fasciatus occur- 

 ring also in southern Florida and Cozumel Island, off Yucatan. 



L. virgineus L., xii, 162. L. fasciatus Mull., xii, 166. 



A. virginice Blv. B. vexillum Brug., A. pallida 



A. vexillum Humph. and crenata Swains. ,A. anais 



A. emarginata Swains. Less., A. hneata Val., A. 



Ch. vittata Humph. lutea Ant., A. murrea Rve., 



Helix regina Bowd., xiv, 165. A. picta Rve., ff. hepatica 



L. poeyanus Pfr., xii, 166. Bolt., A. solida Say. 



L. blainianus Poey, xii, 174. 



