160 XENOPHORA. 



X. AUSTRALIS, Souverbie. PL 47, figs. 94, 95. 



Perforate, elevated conical, light yellowish brown, obliquely 

 subflexuously corrugated above, profusely agglutinating; base 

 subconvex around the umbilicus and spirally silicate, subconcave 

 and intricately rugate towards the margin, decussated by radia- 

 ting striae, becoming subnodulous near the umbilicus. 



Diam., 1 inch. 



New Caledonia. 

 X. CEREA, Reeve. PL 45, fig. 84. 



Perforate, yellowish white, nearly smooth, profusely aggluti- 

 nating ; base slightly concave, very minutely spirally and con- 

 centrically striate. Diam. 25 mill. 



Philippines* 

 X. PALLIDULA Reeve. PL 44, fig. 79. 



Imperforate, yellowish white, obliquely striate, profusely 

 agglutinating; base subplane, thinly arcuatel} T radiately striate, 

 very minutely crispate. Diam. 2'5 inches. 



Japan. 



X. CRISPA, Konig. PL 45, fig. 85 ; PL 4G, fig. 88. 



Umbilicated, rather thin, whitish or light yellowish brown, 

 obliquely rugate, and profusely agglutinating at the suture and 

 periphery; base concentrically closely lirate, lime about eight in 

 number, granular, the vicinity of the periphery obliquely sub- 

 radiate and granular; columellar callosity hiding a small part 

 of the umbilicus, which is profound, lanu'llarly plicate. 



Diam. 34 mill. 



Mediterranean Sea. 



The operculum is thin, with unilateral lines ; the earlier 

 whorls of the shell are smooth. First described under the 

 above name as an Italian tertiary fossil; as a living species, 

 Tiber! called it X. Mediterranea. 



X. SENEGALENSIS, Fischer. PL 45, figs. 86, 87. 



Umbilicated, conical, rather solid, whitish, earlier whorls 

 smooth, subsequent ones with irregular, crispate, oblique strite 

 and impressed lines, agglutinating at suture and periphery ; 

 base a little concave, concentrically granosety lirate, the lira? 5 

 or 6 in number, the lirae of the peripheral carina oblique, 



