196 AMERICAN JOURNAL 



color or yellowisli liorn color, the spire usually reddisli-brown, 

 last wliorl striped irregularly with brown, and encircled by 

 three dark reddish-brown lines or bands, suture marginated 

 with white. 



Var. 1. Wholly dark reddish-brown, striped longitudi- 

 nally, and sutures marginated with white. 

 Var. 2. Plain yellowish, striped longitudinally with light 

 brown, without bands or sutural lines. 



Observations. — The above species from the island of Tahiti, 

 together with one of an analogous form inhabiting the neigh- 

 boring island of Moorea, have been classed by Mr. Cuming 

 with nodosa, Pfr. The localities given for the latter species 

 are Tahiti and Navigators. Our species in all its varieties is 

 conspicuously striped longitudinally^ and, with very few excep- 

 tions, banded transversely. The lip and aperture also differ 

 from nodosa. Specimens from the two localities may have 

 become mixed in the Cumingian collection. 



0. Paetula elongata, Pse. 



Description. — T. elongata, gracilis, turrita, tenui, pellucida, 

 nitida^ sub lent^ transversim tenui striata, longitudinaliter sub- 

 rugosa, angust^ umbilicata ; anfr. 5|, plano-convexis, sutura 

 eubimpressa, rarissim^ marginata ; apertura oblongo-ovalis, 

 parum obliqua, edentata, | longitudinis testte aequans ; labro 

 lequaliter et subrotunde reflexo. Cornea vel pallide rosacea, 

 longitudinaliter strigata, interdum omnino straminea aut albida. 



Var. Castanea bicingulata. 

 Shell elongate, slender, turreted, thin, transparent, shining, 

 transversely very finely striated, somewhat roughened longi- 

 tudinally, narrowly umbilicate; whorls 5 J, flatly convex, 

 suture somewhat impressed, very rarely marginated ; aperture 

 oblong oval, somewhat oblique, edentate, one-half the length 

 of the shell ; lip evenly and somewhat roundly reflected. Horn 

 color or pale rose, striped longitudinally, or wholly straw 

 color. 



A^'ar. Encircled by three chestnut bands, more or less 

 interrupted. 



Observations. — The above species is referred to P. lineata, 

 Less., by Mr. Cuming, which was collected by Lesson, during 

 the voyage of the " Coquille," at Oualan, a small isolated 

 island in Micronesia, 3000 miles from the Tahitian group. 

 The description by Dr. Pfeiffer, in his first Monograph, cor- 

 responds with the true lineata, that, however, in the second, 

 appears to have been drawn up from specimens found at 

 Moorea {Eimeo), where the elongata occurs. 



