163 



are disproportionately large for the animal, and deposited under logs 

 during October and November. The size of the egg probably 

 varies with that of the mature shell, as is the case with Glandina. 

 The young, upon emerging, are obliquely orbicular in shape (pi. 42, 

 fig. 45). 



C. Dufresnii Leach. Tasmania. 



Genus PANDA Albers, 1860. 



Panda ALBERS, Die Heliceen, edit. Martens, p. 149, type H.fal- 

 coneri Reeve. SEMPER, Reisen, p. 103 (anatomy). HEDLEY, Rec. 

 Australian Museum, ii, p. 26 (anatomy and systematic position). 

 PILSBRY, Nautilus, vi, p. 9, May, 1892 (systematic position). Not 

 Panda Heyden, Isis, 1826, p. 612 (Acarina). 



Shell Bulimoid rather than Helicoid, globose-oblong, higher than 

 wide, umbilicate or imperforate, thin but strong. Surface smoothish. 

 Whorls 4i, the earlier two finely beaded, indistinctly marked off 

 from the smoother or spirally striated after-growth (pi. 46, fig. 12, 

 P. atomata} ; apex obtuse. Last whorl very large, hardly descend- 

 ing in front. Aperture large, subvertical, higher than wide ; outer 

 lip thin, not expanded', columellar lip reflexed toward its insertion. 

 Type P.faleoneri, pi. 46, fig. 11 (P. larryi, pi. 46, figs. 13, 14). 



Animal externally like Gary odes. Sole indistinctly tripartite ; 

 back with some ill-defined longitudinal granulation ; sides and tail 

 with flat, irregularly polygonal granulation ; tail rather flat and 

 sharply pointed. Lung cavity and kidney short. Mantle edge 

 thick, without lobes (pi. 46, fig. 13, P. larryi). 



Jaw arcuate, smooth, with a slight median projection or none (pi. 

 47, fig. 2, P. atomata. 



Radula having all of the teeth unicuspid. Marginal teeth with 

 long, oblique cusps (pi. 48, figs. 15, 16, P. atomata. PI. 48, fig. 17, 

 P.ftilconeri). 



Genital system having the penis stout, the retractor attached to its 

 summit, and distally arising from the columellar retractor muscle. At 

 the base of the retractor is inserted an epiphallus about as long as 

 the penis, then narrowing into the vas deferens. The epiphallus is 

 partly filled by a " pilaster," or fleshy cord adnate along one side, 

 which passes into the penis, and there expands into a peculiar penis 

 papilla (fig. 3) ; internal walls of penis having having several weak 

 longitudinal fleshy folds. High on the vagina opens the duct of the 

 spermatheca, and opposite it enters a long appendicula (pi. 47, figs. 

 3, 4, P. atomata. PL 47, fig. 1, P.faleoneri). 



