840 JOURNAL, BOMBAY NATUBAL MIST. SOCIETY, Vol. XXVII. 



Cyclops viridis, Jurine. 



Irrigation runnel at Amara. Resht and Enzeli, N. W. Persia. 



Cyclops vernalis, Fischer. 



Resht, N. W. Persia. 



Cyclops bicuspidatus, Claus. 



Amara. The variety with 14 joints in the Antenna (C. lubbocki, Brady) was 

 taken in a disused well together with Cyprinotus incongruens, but the typical 

 form was found in flood water near the Sheikh's house (Bet Khodayer) at Amara. 



Cyclops leucharti, Claus. 



Amara. In small numbers in several collections. 



Cyclops crassus, Fischer-Sars. 



Amara. In the moat of Fort Farm. 



Cyclops albidus, Jurine. 



A single male was taken at Kharabah Marsh and two females at Azize, both 

 these localities are in the great permanent marsh east of Amara. 



Cyclops agilis, Fischer-Sars. 



Ezra's Tomb, Mesopotamia, and Enzeli, N. W. Persia. 



Cyclops affinis, Sars. 



A single mature female taken at Azize, Amara. 



Cyclops bicolor, Sars. 



EnzeU, N. W. Persia. 



Cyclops diaphanus, Fischer. 



Amara, in flooded ditches, and at Gantra Sarut on the E. bank of the 

 Tigris between Aligharbi and Amara. Prof. Sars (Crustacea of Norway) has 

 identified C. diaphanus, Fischer, with C. nanus, Sars, but it seems to me that 

 Fischer's description is so scanty and ambiguous that it is advisable to follow 

 the interpretation placed upon it by Claus, Schmeil and others and to apply 

 this name to the species of Cyclops fully described by Claus first as Cyclops mi- 

 nutus and later as C. diaphanus, Fischer. Cyclops nanus, Sars, is a very distinct 

 form closely related to C. languidiis, Sars, and a transfer of the name diaphanus 

 to it will, in my opinion, only lead to confusion. 



Cyclops huxtoJii, n. sp. 



Body robust, the cephalothorax slightly longer than the abdomen ; epimera 

 of the thoracic segments 1-3 not prominent. Segment 4 somewhat produced 

 laterally. Genital segment of abdomen broad and slightly exceeding the length 

 of the 3 following segments. Anal operculum fringed with minute denticles. 

 Ventral surface of genital segment marked with lines of very minute cilia. 

 Furcal rami long and slender, equal in length to the 3 preceding segments, and 

 not divergent. Lateral seta inserted a little behind the middle of their length. 

 The outermost apical seta slightly shorter than the innermost ; the two inner 

 setae of nearly equal length, the inner one less than twice the length of the furca. 

 The first antennae consist of 11 joints and are considerably shorter than the first 

 segment of the thorax. The eighth joint bears a sensory rod. Comparative 

 length of joints as shown in following formula: — 



20. 6. 13. 5. 4. 9. 15. 14. 8. 9. 11. 



123456789 10 11 



Swim.ming legs with all rami two- jointed. The second joint of the 

 exopodite of the first leg bears 3 spines, while that of each of the three 

 following pairs bears four. The endopodite of the fourth leg bears at its apex 

 a single long spine and a seta. The first joint of the fifth leg is not distinct, its 

 seta being apparently borne on the outer dorsal edge of the segment. The 

 second joint is of peculiar shape, short and broad, bearing a long seta on its 

 outer angle and a short spine on the inner side. This inner spine is longer in 

 the male than in the female. Length 1 • 1 mm. 



