272 Occasional Papers Bcrnicc I'. Bishop AJ itsciim 



J'ifrca (?) inolohaiciisis Sykes, Proc. Mai. Soc. London, ii, p. 298, 1897. 



I"'auna Hawaiiensis. ii. PI. XT, figs. 45, 46, igoo. 

 J'itrca ( ?) IiaiiHiiieitsis Anc. Prcic. M<\\. Soc. London, vi. ]i. 120, PI. VH, 



tigs. 8-81), 1904. 



Nesovitrea pauxillus (Gould). PI. XXIV, i; fij^-. 5. 



Helix jutsilhts Gould. Proc. Rost. Soc, ii, p. 171. 1846. 



Helix t'C'i-^-ilhis Gould, Moll.. U. S. Expl. Exped., p. 40. PI. Ill, 

 fig. 46, 1852. J^itrea pauxillus Sykes, Fauna Haw., ii, Moll, p. 279, 1900. 



Animals of all four species were examined and agreed very closely. 

 The foot is light yellowish-white and has well-marked pedal grooves, but no 

 tail pore or slit ; the central section of the sole is extremely narrow, being 

 slightly less than one-fourth the diameter of the foot. 



All the animals examined were rather strongly contracted alcoholic 

 specimens. There were no shell-lobes present. The right dorsal lobe in the 

 contracted specimens is rather strong, as is also the anterior left dorsal 

 lobe ; the posterior left dorsal lobe is long and narrow. On the right side 

 the collar is uniformly slate-colored, on the left side the collar is a lighter 

 gray, and its upper portion is bounded by a dark-gray line. The right side 

 of the mantle, from the right margin of the kidney to the intestine, is 

 uniformly minutely and densely stippled with dark brown ; the portion of 

 the mantle covering the kidney is pale flesh-colored ; the left side, below 

 the kidney, is pale, indistinctly minutely stippled. 



The pulmonary vein is indistinct. In a single specimen were seen 

 minute branching veins e.xtending downwards and to the left of the pul- 

 monary orifice. 



The generative organs are extremely simple. The albumen gland is 

 proportionately large and long and is oblong in outline. The oviduct is not 

 tightly twisted. Spermatheca rather small, with a long rather broad duct 

 enlarging abrupth' at its termination close to the base of the uterus. Penis 

 very short and simple, cylindrical, about % mm. in length, with a long 

 slender penial retractor attached at its distal end ; vas deferens short, not 

 accompanying the penis to its base. 



The right eye retractor does not pass between the oviduct and penis 

 as in most snails but between the buccal mass and genitalia. 



The tooth formula is 1-8-30. 



[12] 



