650 



SCIENTIFIC NEWS. 



[Dec. 28, 1888. 



SOME RECENTLY DISCOVERED FORMS 

 OF MICROSCOPIC CRUSTACEA. 



(Part II., continued from p. 622.) 



Mecynccera clansi, I.C.T. Differs remarkably from 

 every other known species in the extreme length of its 



alike in both sexes, and about twice the length of the 

 entire animal (fig. 1) ; the nth, 12th, and 13th joints 

 of left antennae only are edged with fine saw-teeth 

 (fig. 2). The basal portions of both antennas bear 

 several short setae and a few long ones, and at intervals, 

 and especially at apex, are several long, whip-like setae. 



Fig. 1. Mecynocera Clausi, I.C.T., female, x 250. 

 Fig. 2. Eleventh, twelfth, and thirteenth joints of left an- 

 terior antenna of ditto, showing saw-teeth, x 400. 



anterior antenna?, by which it ran be at once recognised. 

 It is about ^ inch in length. Its rostrum is bifid and 

 yery slender. The anterior antennae are 23-jainted, 



Plate VI. 



Fig. 3. Fourth swimming-foot of ditto. X4°o. 

 Fig. 4. Abdomen and caudal segments of male ditto. 

 X400. 



The posterior antennae are very muscular ; the outer 

 branch is 3-jointed, the inner 7-jointed, and terminated by 

 spreading setae. The maxilla? are well developed, with 



