PARTULA, MOOREA. 209 



Another race, tangent from nucleola, is figured, pi. 27, fig. 

 7. The dark brown shell is profusely striped on the last l 1 /^ 

 whorls with cream-white. The columellar denticle is small 

 and prominent. 



P. TVENIATA NUCLEOLA 'Pease' Garrett. PL 29, figs. 14, 15, 16. 



A small, compact, ovate-conic race. The surface is densely 

 and distinctly striate spirally, but little shining, corneous- 

 whitish, corneous-brown with wide indistinct darker and 

 paler streaks, yellowish-brown or chestnut brown. The short 

 spire is straightly conic; whorls about 4%, the last full be- 

 low, rounded or somewhat flattened on the back. The colu- 

 mella bears a small but rather acute tubercle in the middle, 

 at the lower end of the axial expansion. There is no parietal 

 tooth, but sometimes the very slight indication of one may 

 be seen. 



Length 15, diam. 9, aperture 8.4 mm. 



Length 16, diam. 8.2, aperture 8 mm. 



Length 14, diam. 9, aperture 8 mm. 



This form is probably more primitive than the typical 

 t&niata. It stands very close to P. filosa of Tahiti. The two 

 are apparently of common origin. According to Garrett, 

 nucleola intergrades with tceniata, yet it appears to be as 

 distinct as elongata is. The largest examples measure 18 x 

 10, apert. 9% mm- It lives in a small valley about two miles 

 west of Opunohu. 



Partula nucleola Pease MS., GARRETT, Journ. A. N. S. 

 Phila. ix, 1884, p. 72 (a form of t&niata) . Partula corneola 

 HARTMAN, Proc. A. N. S. Phila. 1886, p. 32, pi. 2, f. 6 (April 

 6, 1886). 



Form corneola Hartman, pi. 41, figs. 15, 17. A form of 

 nucleola has been described as a distinct species under the 

 name P. corneola. It is similar to P. t. nucleola in most re- 

 spects. The surface is dilute brown with some faint whitish- 

 corneous streaks; surface very beautifully engraved spirally, 

 the lines 'Close and somewhat waved. There are rather coarse 

 longitudinal wrinkles on the back of the last whorl, readily 



