80 XAVICELLA. 



The synonyms include X. macrocephala of Sowb. and Reeve (figs. 

 27, 28), N. Freycineti, Gould, N. Caledonica, Morelet, X. affinis, 

 Gassies, N. ornata, Adams and An gas, N. undulata, Mousson, JV. 

 squama, Mousson, and N. nana, Montr, (juvenile). 



N. CUMIXGIAXA, Recluz. PL 28, fig. 29. 



Olivaceous yellow with irregular concentric greenish brown or 

 blackish bands and reticulations. L. 15-30 mill. 



Philippines. 



The undulating, transverse alternate series of light and dark col- 

 ored stripes give character to this species ; it is scarcely as convex 

 as N. Bourgainvillei. 



N. JAXELLA, Recluz. PI. 28, figs. 30-33. 



Broadly ovate, laterally somewhat produced, convex, with high, 

 narrow, recurved beak, olivaceous yellow, with numerous, close ra- 

 diating strigations of greenish black, sometimes coalescing, smooth, 

 shining. L. 30-45 mill. 



Philippines, Marianne Is., Moluccas. 



N. lentiginosa, Reeve (fig. 33) is a synonym. 



K LAPEROUSEI, Recluz. PI. 28, fig. 34. 



Convex, elliptical, with compressed sides, chestnut color, with 

 here and there a black longitudinal strigation, sometimes forking, 

 postero-lateral margins of the lip black stained. L. 18-25 mill. 



Marianne, Guam, Ponape Is. 



Will probably prove a variety of N. macrocephala, Guillou. 



It is N. elliptica, Quoy. 



N. LUTEA, Martens. PI. 28, figs. 35, 36. 



Broadly oval, convex, epidermis thin, yellowish, without mark- 

 ings, apex reddish, interior light greyish. L. 17'5 mill. 



Viti Is. 

 Subsection PARIA, Gray, 1867. 



N. FREYCINETI, Recluz. PL 28, figs. 37-41. 



Oval, convex, yellowish brown, varying to chestnut color, diver- 

 gently radiated and coarsely reticulated with black ; septum trun- 

 cately produced in the middle. L. 17-35 mill. 



New Hebrides to Viti Is. 



The synonyms are N. pala, Mousson and its var. Vitiensis, Mouss., 

 var. compressa, Martens, which includes X. suffreni, Reel., N.psfo- 

 t</ct><t, Reeve (figs. 40, 41), and X. pala, var. profunda, Mouss. 



