ENTOMOSTRACA FROM CEYLON. 337 



III. COPEPODA. 



Cyclops distinctus Richard. (PI. I. fig. 6,). 



In a collection from a pond by Lady Horton's Drive at Kandy 

 a few specimens of a Cyclops were found, which I assign witli 

 some hesitation to this species. The specimens included only a 

 single adult female, the rest being chieliy adult males. 



My specimens differ in some important respects from typical 

 European specimens vvi,th which I have compared them : — 



(1) In size. Length: $, 1-44 mm. ; S, -95 mm. Whereas 



English specimens iiiensure about 2 mm. ( $ ). 



(2) Furcal rami. Whereas in typical C. distinctus the rami 



are about 2.^- times longer than they are broad, in 

 specimens from Kandy they are less than twice the 

 breadth. Also in the latter the lateral seta is very 

 long — longer than the ramus. The proportional length 

 of the remaining setse is the same in both. 



Since in other respects — as, for example, in the form of the 

 fourth pair of legs and their uniting lamella (fig. 6) — the agree- 

 ment is complete, I do not think the differences are sufficient to 

 constitute a distinct species. 



Cyclops hyalinus Rehberg. 

 Kandy ; Mahintele ; Anuradhpura. 



Cyclops leuckarti Clans. 

 Peradeniya ; Kandy ; Anuradhpura. 



Cyclops varicans Sars. 



Peradeniya ; Kandy ; Anuradhpura. Rare. 



Cyclops varius Lillj., var. proximus Lillj. 



A few specimens taken in the Priest's Well at Pei'adeniya. 



Cyclops prasinus Fischer. 



Peradeniya — Priest's Well ; Kandy — Lady Horton's Drive 

 pond. 



Canthocamptus grandidieri Guerne & Richard, var. (Pis. I. 

 & II. figs. 7-9.) 



In collections from Peradeniya and from Anuradhpura a few 

 specimens of a species of Canthocam/ptus were found which I find 

 difficulty in identifying. In most respects they agree very closely 

 with descriptions given of C. grandidieri, bat with I'egaid to the 

 f area and to certain details of the fifth pair of legs there are 

 differences which are constant and considerable. The furcal 

 rami are more or less quadrangular, bea.ring at their apex a short 

 slender seta on the inner angle and a single very long seta with 



