316 Annals of the South African Museum. 



to us by J. H. Hoffmeyr, Esq., Inspector of Schools. Below are 

 given the average measurements of a number of these : 



Greatest length 30 mm. 



,, breadth 7 ,, 



,, depth 2 



Posterior sucker (longitud.) 3 ,, 



(transv.) 3'5 



This species bears a close resemblance to H. septemstriata, and a 

 comparison with Grube's figure might well on first examination 

 justify its inclusion in that species. The resemblances concern 

 measurements and pigment pattern of dorsal surface. 



We quote Grube's diagnosis in part to explain the differences : 

 "Ex olivaceo grisea, depressa, laevis, dorso vittis longitudinalibus 

 fuscioribus 7 ornata, media ceteris, seque distantibus, latiore, a 

 proximis paulo longius remota, externis marginem tangentibus, 

 ventre concolore. . . . Discus posterior radiis albidis 5 ad 7 

 striatus. ..." 



Although in both forms there are seven (7) dorsal bands, and a 

 faint linear pigmentation in the middle and posterior regions of the 

 body between the median band and that on either side, yet not only 

 are the lateral bands as important as the median in the species under 

 consideration, but the intermediate bands are much larger than in 

 H. septemstriata. Further, in our species there is no ornamentation 

 on the dorsal surface of the posterior sucker ; the ventral surface is 

 a strong contrast in colour to that of the dorsal surface, whereas both 

 are similar in H. septemstriata; and there is a strongly marked 

 yellow margin to the dorsal surface as in other species noted in this 

 paper, but of which no mention is made, and apparently correctly so, 

 by Grube. 



Both species agree in that the outermost dark band of the dorsal 

 surface bears only a single sensory papilla. 



HlBUDO INTERMEDIA, Sp. 11OV. 



Locality. Smithfield, Orange Eiver Colony. 



We are indebted to the authorities of the South African Museum 

 for a large number of specimens of this species. 



Diagnosis. Body elongate, flattened ? 



Dorsal surface yellowish-brown with series of dark pigment bauds 

 extending along the whole length of the body and consisting of a 

 double band in the middle line, with three bands on either side of 



