CYCLOPOIDEA. 1201 



Plate 84, fig. 5 a, female, enlarged ; a', profile of head ; b, anterior 

 antennas ; c, posterior antennae ; d, first pair of feet ; e, second pair of 

 feet ; /, bag of eggs ; g, g', profile of abdomen, showing appendages. 



Eastern entrance of Straits of Sunda, March 5, 1842. 



Body nearly colourless. The anterior antennae not quite as stout 

 as in the preceding species ; the fifth and seventh joints nearly equal, 

 and the eighth or last but little longer than the seventh. The first 

 pair of legs a little larger than second pair of antennae. The abdo- 

 minal feet or appendages have in each pair an oblong base ; to the apex 

 of the outer branch there is a single long curved seta and two or three 

 others quite short ; the inner has two long setae at apex (and one or 

 two shorter on inner margin?). The caudal stylets are twice as long 

 as the last segment of abdomen. The external ovarian sac had a dull 

 green colour, and contained about twelve eggs. 



Family III. COEYC^ID^E. 



The Corycaeidae are characterized by having two large oblate 

 lenticular cornea (which we call conspiciUa), on the front of the 

 animal, to concentrate the light that passes to the large prolate lens of 

 the eye. These front lenses are well compared to a pair of spectacles, 

 and in these minute animals nature anticipated man's invention. The 

 organs of the mouth are quite small, and without jointed appendages, 

 so that the only prominent organs of the cephalothorax are the two 

 pairs of antennae, a pair of prehensile legs, and four pairs of natatories. 



The natatories are similar to those of the other Cyclopoidea. The 

 fifth pair, corresponding to the genital feet of the Pontellae, is often 

 wanting. 



The abdomenis either without appendages, excepting the terminal 

 stylets, or the first segment bears a short pair, terminating in one or 

 two setae. 



The external ovarian sacs are large, and either one or two in number, 



as in the Cyclopidae. 



301 



