100 



size, outermost masticatory lobe comparatively large and armed on the end 

 with 6 coarse unguiform spines of equal size. Maxillipeds without any trace 

 of a vibratory plate, palp in female simple, lash-shaped, in male, as usual, 

 prehensile and very unequally developed on each side. Anterior legs compa- 

 ratively small, with the basal part quite simple, 1st joint of terminal part rather 

 dilated and provided anteriorly with a remarkably strong plumose seta, apical 

 claw not much prolonged. Posterior legs with the penultimate joint not subdi- 

 vided and provided with a single slender seta inside in the middle, terminal 

 joint comparatively small and tipped with 3 setae not very unequal in length. 

 Caudal rami attenuated and connected with each other in the greater extent 

 of their length, each carrying on the tip 3 closely set setiform claws, the proximal 

 one apparently answering to the dorsal seta in other Cyprids; apical bristle 

 wanting. Copulative appendages of male rather massive and each provided 

 with a movable band-like lappet curved upwards. Ejaculatory tubes with both 

 extremities pronouncedly funnel-shaped, radiating spikes arranged in numerous 

 densely crowded whorls, with scarcely any distinctly visibles interspaces be- 

 tween them. 



Remarks. This genus was established in the year 1853 by Lilljeborg, to 

 include the form recorded by O. Fr. Miitler as Cypris monacha and subsequently 

 adduced by Zenker to his genus Cyprois. From this genus, in the restriction 

 now adopted, it is however very sharply defined. In addition to the European 

 species described below, 2 other species have been recorded from more southern 

 latitudes, the one from Sumatra, the other from Ceylon. As above mentioned, 

 the genus Newnhamia of King is closely allied to the present genus, from 

 which it only seems to differ by the rough sculpture of the shell. 



33. Notodromas monachus, (O. Fr. Muller). 



(PI. XLVI, PI. XLVII, fig. 1). 

 Cypris monacha, O. Fr. Muller, Entomostraca, p. 60, PI. V, figs. 68. 



Syn: Monoculus monachus, Jurine. 

 Cypris bimnricata, Koch. 

 Cyprois monacha, Zenker. 



Specific Charactets. Female. Shell moderately tumid, seen lateral! 

 rounded subquadrangular in shape, greatest height a little behind the middle 

 and about equal to 2 / 3 of tne length, dorsal margin strongly curved behind, 

 but sloping rather slowly to the anterior extremity, ventral margin per- 

 fectly straight and sharply defined both in front and behind, anterior extremity 

 broadly rounded, posterior obtusely blunted; seen dorsally or ventrally, regularly 



