NATICA. 29 



densely lineated with chestnut, the markings dislocated in three 

 spiral series. Length, 1-1*5 inches. 



Panama. 



Closely allied to the next species in general pattern of coloring 

 only. 



N. Haneti, Recluz (fig. 56), and JV. excavata. Carp., are 

 synonyms. 



N. LINEATA, Lam. PL 8, fig. 57. 



Shell smooth, rather largely umbilicated, with inferior entering 

 callus ; white, flexuously lineated with chestnut, except at the 

 base. Length, 1-2 inches. 



Singapore, Philippines. 

 N. BURTASENSTS, Recluz. PI. 8, fig. 58. 



Whorls somewhat slanting above, convex below, smooth, 

 polished ; bluish white ; with longitudinal flexuous chestnut 

 li neat ions ; deeply umbilicated ; columella with a broadly re- 

 flected deep red columellar callosity. Length, 18 mill. 



Isle of Burias, Philippines. 

 N. GRACTLIS, Recluz. PI. 8, fig. 59. 



Whorls more convex and spire more produced than in pre- 

 ceding species ; whitish, with crowded oblique longitudinal linea- 

 tions ; umbilicus reniform, with a median entering callus. 



Length, 10 mill. 



Philippines. 

 N. VITELLUS, Linn. PI. 8, fig. 60. 



Whorls slightly plicate at the suture ; orange-brown, obscurely 

 lighter banded, with an upper and a lower series of large white 

 or yellowish spots ; umbilicus deep, partly circumscribed by a 

 superior callus. Length, 1-25-1*75 inches. 



Philippines, Singapore. 

 N. ZONALIS, Recluz. PL 8, fig. 61. 



Shell covered by a very thin brownish epidermis, beneath 

 which it is whitish, with two bands of longitudinal, sometimes 

 confluent chestnut lines ; umbilicus with inferior entering callus. 



Length, 17 mill. 



Viti Islands. 

 N. RUFA, Born. PL 9, figs. 62, 63. 



Excavately umbilicated, with central entering callus, and 

 overhanging superior callus ; upper and middle portion of 



