158 PEDINOGYRA. 



A. gonostyla Anc., vi, 45. A. subfunebris Mab., vi, 55. 



A. lithida Mab., vi, 53. A. thelica Mab., vi, 47. 



A. lychna Mab., vi, 52. 



Subgenus PCECILOSTYLUS Pilsbry, 1890. 



Poscilostylus PILS., Man. Conch., vi, p. 56. Eurystyla ANCEY, not 

 fital. 



Shell compact and globose or globosely-elevated, imperforate or 

 nearly so, smooth and shining, vividly colored. Peristome blunt, 

 narrowly expanded, the columellar margin reflexed. Type A. 

 viridis Dh., pi. 38, figs. 10, 11. 



Anatomy unknown. These handsome shells have the appearance 

 of the Philippine Island Cochlostylas. They are probably arboreal 

 forms. 



A. viridis Desh., vi, 56. A. cerina Morel., vi, 57. 



Genus PEDINOGYKA Albers, 1860. 



Pedinogyra ALB., Die Hel., p. 162, type H. cunninghami. PILS- 

 BRY, Man. Conch, vi, p. 13. HEDLEY, Records of the Australian 

 Mus., ii, 29, and Proc. Roy. Soc. Queensl. vi, p. 63, pi. 3, (anatomy). 



Shell large and discoidal, with flattened spire and broadly open 

 umbilicus, solid, opaque and colored. Whorls 5-6, the last large, 

 deeply deflexed in front. Aperture oblong-truncate, nearly horizon- 

 tal, the lip slightly expanded, blunt. Type P. cunninghami, pi. 17, 

 figs. 5, 6. 



Jaw arcuate, ribless, faintly striated transversely and longitudin- 

 ally, the ends rounded (pi. 17, fig. 2, P. cunninghami). 



Radula having the middle cusp only developed, on all the teeth. 

 Centrals and laterals with the cusp shorter than the basal-plate. Mar- 

 ginals with a single ovate inclined cusp, projecting beyond the 

 square basal plate (pi. 17, fig. 4, a central with 1st, 12th and 17th 

 laterals, and 27th marginal tooth of P. cunninghami). 



Genitalia having the penis long, retractor and vas deferens 

 inserted at its apex, lower course of the latter large. Upper part of 

 the vagina bearing the long stalked spermatheca, and a long appen- 

 dicula, and bound firmly to the body-wall at this point. Ovo-testis 

 imbedded in the digestive gland, as usual (pi. 17, fig. 1, P. cunning- 

 hami). Eggs globose, white, 9 mill, in diameter, hard, calcareous, 



