196 Mr. R. Templeton's Descriptiojis of 



rior similar in form, but of smaller, size ; the ultimate with two rather 

 large spined appendages. The first segment with a curved process, 

 terminated by two spines or hairs on each side, (Male generative 

 organs ?) 



In considerable numbers off the Cape, June, 1835. No variety in 

 form or appearance. 



Fig. 10 fl, Animal magnified. 

 b, Right antenna. 



Cyclops (Mull.) obesicornis. Plate XXI. fig. 11. 



Ovate, somewhat variable in colour, but usually dark green with 

 reddish streaks. Eye red, single, deejily immersed ; antennae very 

 large, geniculate, multiarticulate, the basal articulations not clearly 

 defined, an irregular transverse line alone marking their position ; 

 spiny, one very remarkable in every specimen curving forwards from 

 the angle : palpi (.'') slender and very hairy. Tail tapering, bifurcate, 

 and terminated by a number of spines, of which two are rather con- 

 spicuous from their length. 



The antennae of this species are usually dark reddish, in palei; spe- 

 cimens they assume a pale pink, but differ in none in the slightest 

 degree in form. They are found in considerable numbers in a little 

 rivulet which crosses a part of M. Geneve's property at Riviere Noir, 

 Isle of France. 



Fig. 11, a, C. oheslcornis magnified. 

 b, The left antenna. 



Cyclops (Mull.) longispina. Plate XXI. fig. 12. 



Ovate, hyaline or slightly pinkish. Exceedingly minute. Eye 

 pink, diffused, deeply immersed. Antenna; moderate in length, 

 rather robust, armed with a tooth-like process arising from the second 

 joint, and with a spine partially concealed by it. Tail not dilated, 

 with a few long spines proceeding from the bifurcate apex, one ex- 

 tremely long, and repeatedly jointed from about its middle. The 

 palpus robust, tapering, composed of three subequal basal joints, and 

 a longer and more slender apical one furnished with three diverging 

 hairs. 



This beautiful little animal was exceedingly common in the water 

 in which the last was detected ; its size, the process of the antennae, 

 and the long spines of the tail sufficiently distinguish it from every 

 hitherto described species. 



Fig. 12, a, C. longispina, magnified. 



b, Right antenna. 



c, Right palpus. 



d) Left division of the tail. 



