296 DR. G. S. BBADT ON ENTOMOSTKACA 



Order COPEPODA. 



Family CALANiDiE. 



G-enus Diaptomus, Westwood. 



DiAPTOMUs oRiENTALis, n, sp. (Plate XXXVII. figs. 21-26.) 

 Posterior margin of the last thoracic segment forming on each 

 side a bidentate process, the outer angle of which is much larger 

 than the inner. Abdomen of the female two-, of the male four- 

 jointed. Anterior antenna 25-jointed, and as long as the cephalo- 

 thorax ; that of the right side in the male differs ouly slightly 

 from the same organ in D. castor; the apical process of the 

 twenty-third joint is, however, larger. The inner branch of the 

 fifth foot of the female is considerably longer than in D. castor, 

 and in the male the foot of each side consists only of a single 

 branch. Length -^ of an inch (1"3 nnllim.). 



F amily Cyclopid^. 



G-enus Ctclops, Muller. 



Cyclops , sp. (Plate XXXVIII. figs. 2-4.) 



I figure the anterior antenna, fifth foot, and furca of a species 

 which occurs abundantly in Mr. Haly's gatherings. It seems to 

 be so nearly allied to several described species that, for the present, 

 I do not assign it any specific name. The anterior antennse are 

 17-jointed, and reach to the extremity of the second body- 

 segment ; the tail-segments about thrice as long as broad. 



Family HARPACTiciDiE. 

 G-enus Attheyella, G. S. Brady. 



Attheyella cingalensis, n. sp. (Plate XXXVII. figs. 

 10-15.) 



This species is very similar to A. spinosa, but the fiftli pair of 

 feet are different, the inner branch of the first pair is three- 

 jointed, those of the second and third pairs are two-jointed, the 

 first joint very small; of the fourth pair one-jointed. Length 

 of the animal -^ of an inch ('5 millim.). 



