310 PARTULA, CAROLINE ISLANDS. 



from Reeve) is somewhat more elongated, yet it intergrades 

 fully with guamensis, judging from examples 'before me (see 

 measurements above). The forms figured by von Martens 

 from the ruins of Nanmatal belong to this more lengthened 

 type. They further illustrate the variation in shape of aper- 

 ture caused by the different degrees of inclination of the 

 columella, and hence have been copied in my figs. 11, 12, 13, 

 14 of pi. 38. 



Dr. von Martens gives the size as length 26, diam. 16, 

 aperture 15 x 11 mm. 



Both Hartman and von Moellendorff have renamed this 

 species, objecting to the name guamensis "inasmuch as this 

 mollusk certainly does not live on the island of Guam, where 

 my friend Quadras collected for more than two months with- 

 out finding it" (Mlldff.) ; but if the name be rejected on that 

 ground, the species should be called brumalis Rve. 



P. GUAMENSIS GRANDIS Moellendorff is "much larger, diam. 

 19, alt. 30.5 mm., less solid, spiral sculpture somewhat less 

 marked, peristome more expanded, less labiate ; 5% to nearly 

 6 whorls. Ponape, coast region (Etscheid, Kubary). 



"There are three color- variations, viz., dark purple-brown 

 with violet lip (typical) ; castanea, pale -chestnut colored with 

 white lip ; and flavescens, pale greenish yellow. The last 

 named albino is rather rare " (Mlldff.} . 



106. P. MARTENSIANA Pllsbry, n. sp. PI. 38, figs. 15, 16. 



The shell is ovate-conic, solid and strong, opaque, with a 

 small, compressed umbilicus; beneath a yellow cuticle (which 

 is partially lost from the type specimen, a "dead" shell), 

 the substance of the shell is dull flesh color, becoming darker 

 on the spire, the first three whorls being dull brownish purple. 

 The spire is eonic, summit slightly obtuse; the early whorls 

 are worn and show no sculpture ; last whorl has no spiral in- 

 cised lines, but some traces of fine spiral wrinkling may be 

 seen in places, though it is very fine and weak. Whorls 5, 

 convex, the last convex throughout. Aperture is very slightly 

 oblique, flesh-pink within; peristome white, very slightly ex- 



