96 PEOCEEDINGS OF THE MALACOLOGICAX SOCIETY. 



was not seen, and if present must be small. The suboral gland is 

 long, and lies loosely attached to the sole wall, as in Ariolimax. 



The genitalia (PI. VII, Fig. 5) lie somewhat as in Ariolimax^ mainly 

 anterioi", but the ovotestis is widely separated from the albumen 

 gland, lying behind the end of the stomach, under G^ (Fig- 3) and 

 over G*, enclosed by but not imbedded in the liver. The penis is 

 20 mm. long, somewhat swollen below, contracted near the middle, 

 and enlarged above, the retractor and epiphallus terminal. Epiphallus 

 long, much convoluted. When pulled straight it measures 85 mm. 

 from apex of penis to base of same. 



Slitting the penis longitudinally (PL YII, Fig. 6), the lower portion 

 of the cavity shows a peculiar system of slender acute fleshy processes, 

 arranged on longitudinal rugse. These probably secrete a calcareous 

 organ, as described by Godwin- Austen. Above this it is fairly smooth, 

 and then finely and densely rugose -reticulate longitudinally ; in the 

 swollen upper portion this passes into a coarse granular pattern, and 

 the walls thicken. Attached distally in the lumen there is a large, 

 bluntly conic papilla, granular on the exterior. 



The vagina is short, with the usual longitudinal wrinkles inside. 

 Spermatheca duct extremely short, abruptly widening into a very 

 capacious, oblong, thin-walled spermatheca. The wrinkles of the 

 spermatheca duct enlarge and become villose or arborescent just 

 within the spermatheca. The latter contained a quantity of calcareous, 

 amorphous granules in the specimen examined. 



The free oviduct is long ; albumen gland, of light chestnut colour, 

 cut superficially into unequal lobules. The ovotestis is small, sub- 

 globose, of a bluish -black colour. 



The digestive tract (PI. VII, Fig. 3) resembles that of Prophysaon, 

 thus diff'ering widely from that of Anon. G^ not difi^erentiated into 

 crop and stomach; G^ and G^ forming a long anterior loop, twisted 

 through half a circle ; G^ and G^ extending far below the stomach, 

 and twisted one revolution. 



Jaw arcuate, with about fourteen broad flat ribs with very narrow 

 intervals. Each rib shows one, or several thickened lines, or incipient 

 plaits. 



Kadula (PI. VII, Fig. 7) with 57:1:57 teeth ; rachidian teeth 

 with rather long mesocones and well-developed ectocones ; laterals 

 similar except for lack of entocones; marginal teeth narrow, with 

 longer cusps, the ectocone small and basal but distinct. 



Musculature (PI. VII, Fig. 1), Arionine. Buccal retractor bifurcate 

 for two-thirds its length, inserted proximally in the middle of the 

 posterior margin of the diaphragm. Ocular reti'actors inserted remote 

 from it (the figure is drawn from measurements) on the same margin. 

 Ketractor of the penis short, inserted at the posterior edge of 

 diaphragm to the right of the left ocular retractor. Tentacular 

 branches not seen. 



Pallial organs (PL VII, Fig. 2) substantially as described by 

 Godwin-Austen for A. altivagus. The principal differences between 

 our specimen and Godwin- Austen's A. altivagus are: — (1) In the 

 genitalia, the penis is less enlarged below, contains no calcareous 



