244 LITTORINA. 



Var. INTERMEDIA, Phil. Plate 42, figs. 21-24. 



Shell smaller, narrower, with engraved spiral lines, tessellated 

 with chestnut and white, periphery angulated or carinated. 



Length, 15-20 mill. 



Sandwich Is., Central Polynesia, Ceylon., China. 



To this are to be added vars. articulata, punctata, strigata, of 

 Phil., var. minor, Weink., L. Sineyisis, Phil. (fig. 23), L. Neiv- 

 eombii, Reeve (fig. 24), L. Novce-Hibernice, Lesson. 



Var. FiLOSA, Sowb. PI. 43, figs. 31, 31a; PI. 42, figs. 25-30. 



Whorls encircled by more or less distant thread-like ridges, and 

 usually showing intermediate striae ; color sometimes pale, without 

 variegated markings, sometimes strigated or tessellated, as in the 

 type. 



Japan, Philippines, Polynesia. 



The synonyms of this variety include L. pallescens, Phil. (fig. 

 30), L. arboricola, Reeve (fig. 25), L. Sieboldi, Phil. (fig. 26), L. 

 Philippiana, Reeve (fig. 27), L. cingulata, Phil. (fig. 29), L. subcin- 

 gulata, Nevill, L. carinifera, Menke (fig. 28), L. perdix, King, L. 

 Icevior, Nevill. 



Var. NEBULOSA, Lam. PI. 43, fig. 38 ; PI. 42, fig. 14. 



Shell much thicker, ashy yellow, more or less nebulous, or with 

 chestnut punctations, strigations or zigzag lines, densely spirally 

 striate, periphery slightly angulated, aperture light yellowish. 



Length, 1-1-25 in. 



West Indies. 



L. tigrina, d'Orb. (fig. 14), is possibly a synonym. 



L. UNDULATA, Gray. PI. 43, figs. 39-41. 



Rather solid, smooth or spirally striate, yellowish or ashy white, 

 with undulating chestnut strigations, sometimes tessellated or 

 dotted, or suffused with chestnut or chocolate, with large white 

 spots forming a row at the suture and another at the periphery ; 

 aperture yellowish, chestnut or violaceous, often with the markings 

 of the exterior, columella flattened, violaceous. Length, 1 in. 



Viti Is., Japan, Philippines, Java, Ceylon, etc. 



Distinguished at once by its solidity and violet columella. 



The synonyms include L. conica, Phil. (fig. 41), and its vars. 

 delicatula and subintermedia, Nevill. 



