The Blenni'idce of South Africa. 123 



movement of the fin ; in the females this is often ahsent alto- 

 gether, or is smaller and more irregular in shape than in the 

 males. 



The species appears to frequent the vicinity of seaweed, and 

 its colouring and general appearance render it almost indistinguish- 

 able from the fronds of weed among which it lives ; specimens in the 

 aquarium seemed to be rather sluggish in their habits, and spent 

 most of their time reclining on the floor of the tank or on the 

 rockwork, in which position they closely resembled a detached 

 portion of a frond of seaweed, a resemblance that is probably 

 protective. In its peculiarities of colouring, its short upturned 

 lip like a pug-nose, the rounded crest and more or less undulated 

 dorsal fin whose transparent or yellowish markings give the appear- 

 ance of decayed or ragged edges, and the broad caudal on its slender 

 peduncle, the fish has a rather unique appearance. 



Eleven specimens examined, ranging from 43 mm. to 206 mm. in 

 length, from weedy rock-pools at St. James and Kalk Bay. 



CLINUS PAVO, n. sp. 



Teeth, a row of small sharp teeth in each jaw, with a band of 

 smaller ones behind them on the upper jaw and 2 small clusters 

 at the symphysis of the lower ; a small curved band on vomer. 

 Depth of body 33 to 4f times in total length excluding caudal, 

 length of head 4^- to 4;i times. Distance from eye to point of 

 snout rather greater than diameter of eye, which is slightly greater 

 than interorbital width and 3f to 4f times in length of head. No 

 orbital tentacles, a flap on anterior nostril ; interorbital space flat 

 with a longitudinal groove. Head long and vertically compressed, 

 mouth small, lower jaw slightly longer than upper, lips protruding 

 and with a flap on chin, maxillary reaches to vertical of anterior 

 nostril. 



Dorsal xxxi-xxxv 3 ; slightly emarginate, commences in line with 

 posterior margin of preoperculum but does not reach to caudal, a 

 slender free peduncle about the diameter of the eye in length being 

 left, to which the last soft ray is joined by a transparent membrane. 

 Spines strong and erect, the first 3 higher than the succeeding, 

 forming a low crest about * the length of the head in height. The 

 first 2 spines are close together, the 3rd is rather further apart from 

 them and still further from the 4th, from which it is removed by a 

 space about equal to the diameter of the eye, the connecting mem- 

 brane being transparent. The spines following the crest are low 

 anteriorly, gradually increasing until they slightly exceed the 1st 



