266 



Occasional Papers Bcniicc P. Bishop Mitscioii 



The color of fresh specimens is olive-lake, witli a narrow indistinct 

 reddish coloration accompanying and extending slightly helow the suture ; 

 the outer and columellar margin of the aperture is edged with a narrow 

 vinaccous line. There are 1V2 embryonic whorls which are sculptured with 

 distant broad low radial costae, high at tlie suturt.- and disappearing below, 

 the costae and interstices covered with very minute regular close spiral 

 striae. Alt. 8.0 nun., diam. 12.3 mm.. 3V_> wliorls ( ligured specimen). 



The animal is uniformly very dark externallj' except for a broad light 

 band accompanying the ridge of the tail (fig. i, /;). The sides of the foot 

 below the pedal grooves are much lighter in color than the flanks of the 

 animal (fig. i, /). There is no distinct tail-pore or slit; but the tail ends 

 above in a rather distinct button. The external portion of the dorsal lobes 

 is a uniform slatey color (fig. i, cr). The mantle is densely and almost uni- 

 formly maculated with dark pigmentation. 



Figure 2. Godnniiia caf^crata (Gould), 

 eleventh lateral (x 250) ; c and d, jaws. 



a, teeth (.v 250) ; b, profile of 



The genitalia are simple. The albumen gland is large, trapezoidal in 

 outline. The oviduct is strongly twisted on itself and can not be straight- 

 ened out without breaking. The spermatheca is irregularly pyriform and 

 united to the vagina by a short duct. The prostate gland is on the inner 

 surface of the ovidtict, which it nearly equals in length. The penis is large, 

 more or less C3dindrical in outline, its distal third somewhat swollen, bearing 

 near its base a prominent swelling into which the vas deferens enters. It is 

 made up of tough muscular tissue and is without any sheath. The vas 

 deferens is simple, without any convolutions, and enters the distal end of 

 the prottiberance borne on the base of the penis. This protuberance has a 

 large cavity (fig. i, e) which narrows down to a much smaller diameter 

 near the middle of the penis (fig. i, d, at x) and probably empties into the 

 narrow duct in the distal third of the penis. 



The tooth formula is 1-4 (4)-32. (1-40.) 



[6] 



