1887.] NATUKAL SCIENCES OF PHILADELPHIA. 141 



V, p. 88. Pfeiffer, Mon. Pneum. (Auric), iv, p. 318. Pease, Proc. 

 Zool. Soc, 1871, p. 477. 



Common on the margins of mangrove swamps. Occurs also in 

 the Tonga and Viti Islands. 



This species is of an oblong pear-shape, uniform cinnamon color, 

 spire short, usually eroded, spirally grooved, the grooves more or 

 less evanescent on the middle of" the body-whorl. There are three 

 folds on the parietal region and usually two laminae in the palate. 

 Length 11 mill. 

 II . striatus, Pease. 



Melatnpus striatus. Pease, Proc. Zool. Soc, 1861, p. 244; 1871, p. 

 477. Pfeiffer, Mon. Pneum. (Auric), iv, p. 311. Schmeltz, Cat. Mus. 

 Oodeff., V, p. 88. 



Melampus Montrouzieri, Souverbie, Jour, de Conch., 1866, p. 148, 

 pi. 6, fig. 1, la. Pfeiffer, Mon. Pneum. (Auric), iv, p. 312. 



Melampus ornatus, Mousson, Jour, de Conch., 1871, p. 21, pi. 3, 

 fig. 7. Pfeiffer, Mon, Pneum. (Auric), iv, p. 312. 



A few examples found on the margins of swamps at Upolu. It 

 also inhabits the Society, Tonga and Viti Islands as well as New 

 Caledonia. 



It may be distinguished by its oblong-ovate form, brownish-cor- 

 neous, chestnut-brown or greenish-brown color, mucronated spire, 8 

 whorls, marked by closely- set transverse impressed lines, and the 

 upper half with small longitudinal plications which give that part 

 of the shell a granulated appearance. The transverse lines are 

 frequently evanescent on the middle of the body-whorl. There are 

 from two to three folds on the parietal region, the upper one small 

 and granuliform. There may be observed one to three lamelliform 

 plications in the palate, and, sometimes with several raised white 

 parallel striae. Length 9-10 mill. 



M. castaneus, Muhlfeld. 



Valuta castanea, Muhlfeld, Mag, Ges. Nat, Fr. Berl., vii, 1818, p. 

 4,pl. l,fig. 2. ..... 



Auricula castanea, Philippi, Zeits. Malak. 1851, p. 54. 



Melampus castaneus, Pfeiffer, Mon. Auric, p. 30. Mousson, Jour. 

 de Conch., 1869, p. 349, 



Prof, Mousson records this species in his Samoan list. It did not 

 occur to my notice. 



