160 PARMELLA, VITRINOCONTJS. 



Genus PARMELLA, H. Adams, 1861. 

 P. PLANATA, H. Adams. PI. 35, fig 11. 



Shell haliotiform, very thin, polished, epidermis yellowish 



brown, widely extending beyond the margin, subplicate with 



growth-lines ; spire very minute, plane, suture distinct ; whorls 



3, rapidly enlarging; aperture subhorizontal, showing the spire. 



Diam. 15 mill, (without epidermis). 



Fiji Islands. 

 Animal unknown. 



P. ELONGATA, Dohrn. Unfigured. Sumatra. 



Genus YITRINOCONUS, Semper, 1873. 



Y. CYATHELLUS, Pfr. PI. 35, figS. 18, 19. 



Umbilicated, conical, obliquely costate, rather thin, corneous ; 

 whorls 9, filiformly carinate ; lip slightly reflected at the base. 



Diam. 5*3, alt. 4 mill. 



Isl. Panay, Philippines. 

 Y. CYATHUS, Pfr. PL 35, figs. 20, 21. 



Umbilicated, arcuately ribbed-striate, brownish, suture crenu- 

 lately margined ; whorls 6 J, the last carinate, smoothish and 

 flattened on the base, umbilicus large. Diam. 8, alt. 4*5 mill. 



Ins. Luzon, Philippines. 

 Y. SINAITENSIS, Pfr. PI. 35, fig. 22. 



Widely umbilicated, thin, closely striated, brown ; whorls 7, 

 with a filiformly carinate periphery, base somewhat convex. 

 Diam. 10, alt. 4 mill. 



Sinaitj province of Ilocos, Luzon , Philippines. 



Y. DOLIOLUM, Pfr. PI. 35, fig. 23. 



Perforate, turbinate, closely, minutely costulate-striate, pel- 

 lucid, not shining, brown ; whorls 5, slightly convex. 



Diam. 3-5, alt. 2'5 mill. 



Sibonga, Isl. Zebu, Philippines. 

 Y. SCALARINUS, Pfr. PI. 35, fig. 24. 



Imperforate, striulate, thin, hyaline ; whorls 6, the last with 

 acutely carinated periphery, base a little convex, lightly, very 

 minutely concentrically striate. Diam. 5, alt. 5 mill. 



Ins. Leyte, Philippines. 

 It is Helix gradata, Pfr., not Gould. 



