424 
single small papilliform joint with two terminal setae; caudal stylets 
long and slender, about six times as long as broad, and equal in 
length to the three preceding caudal segments. Length of body, 
078 mm. 
No. 4. Cyclops virescens, sp. nov. 
Anterior antennae ten-jointed, reaching to the third cephalo¬ 
thoracic segment, first four pairs of feet having both branches three- 
jointed, fifth pair minute, papilliform, bearing two long apical setae; 
caudal stylets short, about equal in length to the last caudal segment. 
Length of body, 06 mm. 
This species is very similar to C. gracilis . Lilljebon, but differs in 
having all the branches of the swimming feet triarticulate ; all the 
inner branches in C. gracilis being biarticulate ; there are also other 
minor differences. 
No. 5. Cyclops phaleratus , Koch 
No. 6 . Cyclops leuckarti , Claus. 
No. 7. Cyclops simillimus , sp. nov. 
Anterior antennae seventeen-jointed, reaching nearly to the 
postenor extrem.ty of the cephalothorax, all branches of the 
swimming feet triarticulate, fifth pair biarticulate, last joint simple, 
narrow and bearing two long apical setae; caudal stylets about twice 
as long as broad, and nearly twice as long as the last caudal segment 
Length, 077 mm. 
