92 AMERICAN JOURNAL 



spire somewhat exserted ; whorls angulated on their upper part ; 

 aperture circular ; columella slightly callous ; whitish, striped on 

 the upper part of the whorls longitudinally with reddish brown, 

 below spotted. 



Collonia granulosa, Pease. — Plate 11, fig. 4. 



Description. — T. globosa, orbiculari, late umbilicata ; spira 

 vix exserta; concentrice costata, costis subgranulosis ; interstitiis 

 concavo-sulcatis ; apice obtusa ; albida, strigis rubro-fuscis ra- 

 diatus picta, circum umbilicum alba. 



Dimensions. — Diam. 5, alt. 3 mill. 



Hab. — Insl. Ponape. 



Shell globose, orbicular, openly umbilicate, concentrically 

 ribbed, ribs somewhat granulose by transverse striae ; spire but 

 slightly exserted ; apex obtuse ; interstices between ribs concave- 

 ly grooved ; whitish, painted with broad radiating stripes and 

 spotted with reddish brown, base around umbilicus white. 



Purpura marmorata, Pease. — Plate 11, fig. 5. 



Description. — T. oblongo-ovata, subfusiformi ; spira acuminata, 

 acuta, conoidalis ; anfr. transversim impresso-striatis, longitudi- 

 naliter tenuiter rugose striatis infra, suturas vix concavis, ultimo 

 medio biseriatim, spira uniseriatim, tuberculatis, tuberculis par- 

 viusculis, compressis ; anfr. ultimo, infra obsolete biseriatim no- 

 duloso ; sutura flexuosa, oblique elevato-striata ; apertura supra 

 subcanaliculata, intus lirata ; purpurascente, aut fuscescente- 

 rubro alboque marmorata, anfr. ultimo medio, basique irregu- 

 lariter albo fasciata, apertura pallide fulva. 



Dimensions. — Long 50, diam. 27 mill. 



Hab. — Insl. Apiana. 



Shell oblong ovate, somewhat fusiform, spire acuminate, sharp, 

 conical ; whorls transversely striated, longitudinally finely and 

 rather roughly striate, slightly concave beneath the sutures, the 

 last encircled at the middle by two series of rather small com- 

 pressed tubercles, whorls of the spire by one, two rows of obso- 

 lete nodules encircling the lower half of last whorl ; suture flexu- 

 ous, bordered by a slight callosity on its upper side and barred 

 by oblique raised striae; aperture slightly canaliculate above, 

 lirate within ; marbled with brownish or purplish red and white, 

 the white forming usually an irregular broad band on upper half 

 of the whorls and at the base, aperture pale yellow. 



Remarks. — The above differs from P. mancinilla, its nearest 



