T athtitTSCA inhabiting SOCIETY ISLANDS. 
38 terrestrial mollusc a iiM 
0.1 breaking away about one-fourth 'ftr'eo'’ tactile pJlate 
Ltirh^ire;," o- «■- 
n:»r:r r of .0 
keel to the colnmellar region. 
E. FiCTA, Pease. Plate II, figs. 25, 25 a, 25 &. at tt^.i v n 99'5 
Helix ficta, Pease, Proc. Zool. Soc., 1864, p. 669. Pfeiffer, Mon. Hel., v, p. 223. 
Hndodonta ficta, Pease, Proc. Zool. Soc., 1871, pp. 455, 474. 
This species Is confined to Tahaa, not “ llaiatea,” as stated by Peoso, wi.ere it 
occui's plentifully, associated with E. fahref<icta. 
Bf'sides the constant single parietal lamina mentioned by Pease, there is a second 
one deeply sealed in the palate between the keel and base of the shell. 
As compared with the preceding species, which it closely resembles in texture, 
color and markings, it is larger, has one more whorl, the umbilicus wider and its 
margin mo’c acutely angulate, and the aperture more decidedly rhomboidal in outline. 
The upper surface of the last whorl is more or less distinctly concave or sulcated next 
to the suture, a character not observed in Huaheinensis. 
E. FAIIRF.FACTA, PcaSC. 
Helix fabrefacta, Pease, Proc. Zool. Soc., 1864, p. 669. Pfeiffer, Mon. Hel., v, p. 190; 
vii, p. 210 ; Novit. Conch., fasc. xxxvi, p. 505, PI. CVIII, figs. 28-31. 
Endodonla fabrefacta, Pease, Proc. Zool. Soc., 1871, p. 474. 
J’alula fabrefacta, Schmellz, Cat. Mus. Godeff., v, p. 207. 
Palula conicava, “ Mousson,” Schmeltz, Cat. Mus. Godeff, iv, p. 72. Paetel, Cat. Conch., 
p. 89. 
Helix conicava, Pfeiffer, Mon. Hel., vii, p. 480 (name only). 
A common species, confined to four large valleys on Raiatea, and one on the east 
coast of Tahaa. On the ground in forests. 
This is one of the aberrant species previously alluded to, which in the type is 
entirely destitute of internal laminrn. In every other particular, it cannot be distin- 
guished from the typical Endodonta. 
Dr. Pfeiffer has given an accurate description and figures of this species in the 
“ Novitates Conchologicaj.” 
It attains a larger size than given by the above author. My largest examples are 
nearly 9 mill, in the greatest diameter by 4 in height. They vary some in tlie eleva- 
tion of the spire, and the brown spots are occasionally absent. The spire is always 
more or less concave in outline, and the broad umbilicus is funnel-shaped, with planu- 
