31 Genitalia and Lingual 



very much shorter, reaching only about half-way to the lower edge of the 

 base of attachment. Laterals of same type. Marginals low, wide, very 

 variable in the denticles, but usually with one long, broad, sharply bifid 

 inner denticle (the inner point much the smaller), and one short sharp, 

 rarely bifid outer denticle. 



The Catalina Island H. Kelletli has same type of dentition. The mar- 

 ginals, however, seem much more broadly denticulated. 



Strophia iostoma, Pfr. 

 Inagua, Bahamas. 



Jaw strongly arched, ends but little attenuated, bluntly rounded. An- 

 terior surface without ribs. Cutting edge with a decided, blunt, median 

 projection. 



Lingual membrane (pi. II, fig. viii) long and narrow. Teeth about 

 29-1-29. Centrals but little longer than broad, tricuspid, the middle cusp 

 short and stout, with a short, bluntly rounded cutting point; side cusps 

 slightly produced, with a short, sharp point. Lateral teeth like the cen- 

 trals but bicuspid. Marginal teeth a simple modification of the laterals, 

 with one short, bluntly pointed inner cusp, and one still shorter, bluntly 

 pointed outer cusp. Fig. a represents the central and lateral teeth, h a 

 marginal tooth, c an extreme marginal. 



Geomalacus maculosus, AUm. 



England. Mr. J. Gwyii Jeffreys. 



The genital system is figured on pi. V, fig. x. For a description of it 

 and of the jaw and dent^^ion, see Ann. Lye. Nat. Hist. N. Y., X, 308. As 

 there stated, the vas deferens is conspicuous by its great length, and the 

 penis sac has attached to its apex a singular globular organ, which is a 

 conspicuous feature of the system. 



Pallifera Wetherbyi, n. sp. 



From near the mouth of Laurel River, Whitley Co., 

 Kentucky, Mr. A. G. Wetherby collected many specimens 

 .of what appeared to be a small species of Tebennophorus. 

 It was readily distinguished from the numerous young of 

 2\ Caroliniensis found in the vicinity by the arrangement 

 of the blotches of color, they being in irregular, interrupted, 

 transverse bands, instead of running longitudinally as in 

 that species. The anterior portion of the body seemed also 

 to be more swollen, and the posterior extremity to taper 

 more rapidly than in Caroliniensis. On examining the jaw 



