474 ON SOME NEAV ARANEIDiE OP NEW SOUTH WALES, 



should be borne in mind and cai'efully noted, in order to prevent the 

 creation of synonyms and consequent confusion, more especially 

 as the examples to which I refer are from the same locality as the 

 one described by that author, namely, Jenolan Caves. 



Similar irregularities occur in other species. The Rev. O. P. 

 Cambridge, F.Z.S., has drawn attention to a like occurrence,* 

 notably in connection with Gasteracantha formosa, the abdominal 

 spines of which in four instances (and which he demonstrated by 

 figuresf) were different " in the absolute as well as relative length, 

 strength, and direction." In the course of this interesting paper 

 he remarks : — " This will be found, I think, to be the case also 

 with some other species when collectors will take the trouble to 

 collect a series of examples, instead of being satisfied with a few 

 or even single specimens of those which appear to differ most from 

 each other . . . especially if the spiders come from the same 

 locality." 



The difference in specimens of C. abyssinus, as I have stated, is 

 slight, or comparatively so ; nevertheless, the fact of the occurrence 

 of any difference at all is, I think, sufficient to justify me in 

 recording it, and is, indeed, my only apology for doing so. 



(J. Cephalothorax 4 mm. long, 3 5 mm. broad ; abdomen 2-5 mm. 

 long, 2 mm. broad. 



Cephalothorax rather longer than broad, convex : caput elevated 

 and rounded on the sides and upper part ; the junction of tlie 

 cephalic and thoracic segments indicated by a strong deep cleft 

 of a transverse curved form, the curvature being directed forwar.is 

 laterally ; colour of the cephalothorax yellow-brown, tinged with 

 dark brown or sepia on the margins of the lateral grooves : clypeus 

 convex, somewhat quadrate, with a deep longitudinal groove 

 running nearly its entire length ; marginal band yellow-brown, 

 dark on the outer margin, rather broad, sinuate, and furnished 

 with a few short yellowish hairs ; profile contour of the cephalo- 

 thorax, like that of the $, representing a double arch. 



*P.Z.S., Part II., 1879, p. 280. 

 t P.Z.S., Part II., 1879, Plate xxvi., figs. 11, 11«, 116, lie. 



