270 PARTULA, SAMOAN ISLANDS. 



very short, conic ; whorls 4 or slightly more, convex, the first 

 2!/2 composing the embryonic shell are uniform gray, the first 

 half whorl smooth, the rest very closely marked with en- 

 graved spiral lines, which rapidly disappear on the next 

 whorl. About the middle of the penultimate whorl some 

 white spots appear in the gray surface, the first ones being 

 arranged along growth-lines; they rapidly change to spirally 

 lengthened spots and belts which may be either continuous or 

 interrupted on the last whorl. The last whorl is lightly 

 marked with growth-lines but has no spiral stria:. It is in- 

 flated and very convex at the base. Aperture lateral, dia- 

 gonal. Peristome broadly and flatly reflexed, white, thick- 

 ened within. 



Length 18, diam. 14, aperture 13 mm. 



Length 19, diam. 15, aperture 13.5 mm. 



Samoan Is.: Upolu, on foliage (Garrett). ? Tutuila 

 (Brazier). 



Partula expansa PSE., Amer. Journ. of Conch, vii, 1872, 

 p. 26, pi. 9, f. 3. PPR., Monogr. viii, p. 203. GARRETT, Proc. 

 A. N. S. Phila. 1887, p. 133. P. cxtensa PEASE, P. Z. S. 1871, 

 p. 473 (name only; error for expansa). P. zebrina Old., 

 MOUSSON, Jouru. de Conchyl. 1865, p. 173 ; 1869, p. 339. 



Readily distinguished by its broad and deeply penetrating 

 umbilicus, very short spire, the absence of spiral striation on 

 the last whorl, etc. The locality Tutuila, originally given by 

 Pease on Brazier's authority, is apparently erroneous. It 

 has been taken by Garrett and Schmeltz on Upolu. Pease's 

 type specimen (drawn in my figure 14) is not fully mature, 

 the expansion and thickening of the lip being incomplete. 

 The pattern of opaque white stripes is interrupted, leaving 



snowy dots and streaks over part of the surface. 

 



Group of P. brazieri. 



The following species seems to be very intimately related 

 to the group of P. caledonica, and belongs to the section 

 Melanesica forms inhabiting the New Hebrides and neigh- 

 boring groups. It has the same pyramidal shape, indistinct 



