390 THE LAND M0LLU8CAN FAUNA OF BRITISH NEW GUINEA, 



Mr. E. A. Smith lias suggested (^" Conchologist," March, 1893, 

 iii. ]). 108) that the shells I styled Oxytes would have been more 

 suitably grouped under Rhysota. Specimens of R. flyensis, con- 

 taining the animal, received from Mount Maneao prove that this 

 opinion is perfectly correct. These spirit examples showed the 

 foot to be provided with a large tail pore, pedal line and oblique 

 grooves. Radula (PI. xxv., fig. 17) narrowly ovate, 10 by 5 mm., 

 formula 120 rows of 90 : 20 : 1 : 20 : 90 ; rows nearly straight, 

 meeting at a low angle in the centre and sweeping gently backwards 

 at the margin ; rachidian cusp stout, an isosceles triangle, with 

 rudimentary cusps at its base, basal plate rather hour-glass-shaped ; 

 immediate laterals rather larger than and inclined towards the 

 rachidian, unicuspidate ; the very numerous marginals with a long 

 knife-like blade grow smaller as they retreat. Of the genitalia 

 (PI. xxiv., fig. 6) the penis sac is large and thick, epiphallus long 

 and nariow, folded upon itself at half its length, where is attached 

 the adductor muscle, which arises from the hind end of the floor of 

 the pulmonary sac near the heart ; a small caecum exists at the 

 entrance of the vas deferens ; the spermatheca is much enlarged 

 at its base, then contracted, and again expanded. Jaw (PL xxv. 

 fig. 16) smooth, arched, with a median keel projecting on the 

 inferior margin. 



Of Chloritis rehsei, the only available animal parted in the 

 middle while being withdrawn from the shell, and on unravelling 

 the genitalia (PI. xxvi., fig. 25) those parts lying beyond the first 

 whorl were found wanting. The penis sac is long and tapers to 

 the orifice above the attachment of the retractor muscle, the 

 epiphallus gradually enlai'ges, and a finger-shaped flagellum arises 

 at the termination of the vas deferens \ on splitting the penis sac 

 no papilla was found contained ; the interior walls are obliquely 

 wrinkled. Jaw (PI. xxv., fig. 13) arched, crossed by numerous 

 stout ribs. Radula (PI. xxv,, fig. 12) has for formula 224 rows 

 of 46 : 20 : 1 : 20 : 46. It is constructed like others of its 

 allies that I have previously described. 



In several instances, chiefly from want of illustration, several 

 Papuan species have received second names. The type of P. 



