460 Lt.-Colonel H. H. Grodwin-Austen on 



KerkopJiorus bicolor, sp. n. (Part I., pi. i. figs. 1, 1 «, 1 6 ; 

 PI. XIX. figs. 1-1 c.) 



Locality. Towa Bush, Maritzburg ; ouly one specimen 

 received. 



Sliell globosely conoid, imperforate, sliiny ; sculpture very 

 nearly smooth, just an indication of irregular li)ngitudinal 

 striation ; colour very ruddy brown as far as a fine brown 

 band just above the periphery, pale and olivaceous below 

 this band (the difference is striking) ; spire depressedly 

 conoid, apex rounded ; suture moderately impressed ; 

 whorls 4, the last expanded, rounded on the periphery ; 

 aperture ovate, about as broad as high ; peristome thin ; 

 columellar margin not thickened, slightly curved. 



Size: major diam. 13*0, minor 11'20 ; alt. axis 6'5 mm. 



Animal (Part I., pi. i. figs. 1, 1 a). — In excellent preserva- 

 tion. The lobe over mucous gland large and standing up. The 

 right shell-lobe is long, wnde at base, tapering gradually to 

 a point ; the left (fig. 1 b, Isl) is given off from a narrow 

 band, which overlaps the peristome and is broad at base and 

 elongately triangular in shape. The left dorsal lobe is in 

 two distinct parts, the anterior the longest and narrow. 

 The wall of the branchial sac (pi. i. {br) fig. 1 6) is pale 

 vinous, with a few black specks. The kidney ift bordered by 

 black bands ; posteriorly the visceral sac is black ; the liver- 

 whorls to apex dark brown, with a few distant minute white 

 spots. 



In the generative organs (PI. XIX. fig. 1) the penis-sheath 

 is large and bulbous near the a})erture, the retractor muscle is 

 short and thick ; the flagcllum short, there is an accessory 

 organ globose at end of a short duct. The spermatheea 

 large, oval, on a strong large duct. The free oviduct is very 

 black, as in inunctus and pJiaidinms. The spermatophore 

 (PI. XIX. fig. 1 b) has a short rather thickened flume closely 

 set with bifid spines, fourteen anterior and about seventeen 

 posterior. There are thirty-two in a second example, and 

 the first four or five are on both sides of the flume next the 

 capsule, most of which were broken off unfortunately, so 

 that their form could only be taken from five; or six that 

 were perfect ; these were bifid close to base and bifid at the 

 points, thus similar in this respect to No. 12 from Mqueefa 

 (pi. iv. (ig. 2 a). TJje long whip-like portion was given oflF 

 near the posterior ternnnation of the flume. 



The radula (PI. XIX. fig. 1 c) of this species differs from 

 all I have as yet dissected, l)ut approaches K. inunctus. 

 Centre and admedians as usual ; the laterals ai'c long and 



