50 G. 0. SARS. [No. 8. 



teriorly armed with a bundle of ciliated setae, whereas the last joint 

 is very short, broader than it is long, and at the tip provided 

 with several strong, partly unguiform bristles. The masticatory 

 lobes are short and thick, rounded at the tip and densely bristle- 

 beset. The branchial plate is very large, semilunar and provided 

 with a dense row of about 25 finely plumose setae, the 6 lower 

 of which are, however, much more slender than the rest and 

 pointing straight inferiorly. 



The 2nd pair of maxillae (fig. 7) rather differ in shape from 

 those organs in the typical Cyprididae. The basal part is rather 

 strongly curved and terminates with a very broad and com- 

 pressed masticatory lobe, obliquely truncate at the tip and pro- 

 vided with numerous delicate curved setae, one of which is 

 attached to a separate ledge on the inner edge. The branchial 

 lamella is well developed, of a rounded form, and provided with 

 6 thickish plumose setae. The palp is very unlike that in most 

 other Cyprididae, being very small, cylindric, and composed of 2 

 sharply defined joints, the last bearing at the tip 3 setae, the 

 middle one the longest. In the male the palp of these maxilla 

 (see figs 11, 12) has been converted into a highly chitinised 

 prehensile organ, consisting of two segments, the last claw-like 

 and movable so as to be impinged against the 1st. Both palps 

 are exactly alike and rather slender, the 1st joint exhibiting 

 quite a linear form and bearing but a single seta at the end an- 

 teriorly, the last very narrow, only slightly curved and ter- 

 minating with a very delicate and pellucid pointed flap. 



The 1st pair of legs (fig. 8), though exhibiting at first sigW 

 quite a normal appearance, differ on closer examination materi- 

 ally by the complete fusion of the penultimate and antepenulti- 

 mate joints, and this is also the case in all the other species 

 of the genus. The apical claw is very elongate and slender, 

 slightly curved and without any trace of lateral denticles. 



The 2nd pair of legs (fig. 9) are likewise well distinguishes 

 from those organs in the typical Cyprididse and somewhat resent 

 the corresponding legs in the genus Candona. They are rather 

 short and generally less strongly upturned than usual (see W 



