130 PROCEEDINGS OF THE ACADEMY OF [1887- 



Pitys complementaria, Yea.se, Proc. Zool. Soc, 1871, p. 474. 



A rare species found beneath rotten wood and under decaying 

 leaves in the forests back of Apia village, Upolu. 



It is a little smaller than gradata and the umbilicus is only mod- 

 erately open. The spire is depressed, suture deep, whorls 5, with 

 transverse, crowded, sharp rib-like strise. Color corneous, tessellated 

 and radiately striped with chestnut. 

 P. allecta, Cox. 



Helix allecta, Cox, Proc. Zool. Soc, 1870, p. 81. PfeifFer, Mon. 

 ]^el., vii, p. 162. 



I am unacquainted with this species which was found at Upolu. 



Dr. Cox says it is a minute, depressed, orbicular reddish-chestnut 

 species, with closely-set strong strise, 4 5 to 5 convex whorls, dee}) 

 suture and the broad umbilicus is saucer shaped. 



PITYS, Beck. 

 P. hystricelloides, Mousson. 



Patula hystricelloides, Mousson, Jour, de Conch., 1865, p. 169, pi. 

 14, fig. 6. (Endodonta) 1869, p. 331. Schmeltz, Cat. Mus. GodefF., 

 V, p. 93. 



Helix hystricelloides, PfeifFer, Mon. Hel., v, p. 221. {Patula) Pae- 

 tel, Cat. Conch., ^. 91. 



Pitys hystricelloides, Pease, Proc. Zool. Soc, 1871, p. 474. 



Not uncommon under rotten Avood and beneath decaying leaves. 

 Upolu. 



This species may be determined by its depressed rounded form, 

 curved costulate strise, depressed spire, 5j whorls, and more partic- 

 ularly by the numerous laminae in the aperture, of which there are 

 from 3 to 4 on the parietal region and 6 to 8 in the palate. The 

 umbilicus is about one-fifth the diameter of the shell. Diam. 4i 

 mill. 

 P. GraeiFei, Mousson. 



Patula (Endodonta) Graeffei, Mousson, Jour, de Conch., 1869, p. 

 332, pi. 14, fig. 3. 



Helix Graffei, Pfeifier, Mon. Hel., vii, p. 258. 



Pitys Graffei, Pease, Proc. Zool. Soc, 1871, p. 474. 



I am not acquainted with this species which was found at Upolu 

 by Dr. Griiflfe. 



