MANGIL1A. 263 



almost straight, slightly rugose above, outer lip nearly straight, 

 very thick, regularly rounded ; pure white. Length, 5*75 mill. 



Ceylon, Bombay. 

 Possibly a form of the preceding species. 



M. PLANILABROIDES, Tryon. PI. 21, fig. 28. 



Shell fusiform, smooth, narrowty, slopingly shouldered; brown 

 with a superior white zone. Length, 10 mill. 



Isl. of Ticao, Philippines (Cuming). 



Described by Reeve as M. plqnilabrum, a name already used 

 by him for the following species described as a Pleurotoma. 



M. PLANTLABRUM, ReCVC. PI. 23, fig. 87. 



Shell ovately oblong, reddish brown ; whorls convex, lineated 

 spirally, ribbed longitudinally, ribs almost obsolete ; aperture 

 oblong, lip flat, red, denticulated within, canal very short. 



Length, 1 inch. 



Philippines (Cuming). 

 M. DECUSSATA, Pease. PI. 25, fig. 37. 



Whorls shouldered ; longitudinally narrowly ribbed, the broader 

 interspaces with revolving stride ; white. Length, 10 mill. 



Paumotus Is. 

 M. CITHARA, Gould. PI. 25, fig. 43 ; PI. 22, fig. 50. 



Ribs rounded, prominent, the interspaces narrow, with close 

 revolving stria3 ; white, sometimes obscurely chestnut-banded. 

 Length, 8-10 mill. 



Fiji Is. (Gould) ; Paumotus Is. (Pease). 



Mr. Pease's M. brevis (PL 22, fig, 50) appears to be a synonym ; 

 the type, which is before me, is a specimen not fully grown. 



M. CAPILLACEA, Reeve. PI. 26, fig. 73. 



Whorls lightly shouldered ; ribs narrow, flexuous, the inter- 

 spaces broader, with revolving striae ; light yellowish brown, 

 encircled by hair-like brown lines on the summits of the striae. 

 Length, 11 mill. 



Philippines (Cuming) ; Solomon Is. (E. A. Smith); 



N. Australia (Brazier). 

 M. DELACOURIANA, Crosse. PL 25, fig. 32. 



Ribs rounded, narrower than the interspaces^ surmounting the 

 18 



