IO4 One Thousand Objects 



835. LARGE EURYCERCUS (Eurycercus lamellatus). 

 Nearly as large as the Great Water-Flea. Subqua- 

 drangular. The abdomen very broad, form of a flat plate, 

 densely serrated. Ponds and ditches. Summer. 



836. GLOBOSE WATER-FLEA (Chydorus sphcericus). 

 Almost spherical. Beak long, sharp, and crescent-shaped. 

 Lower antennae very short. Ponds and ditches. (PI. XL, 



% J5-) 



837. GREEN CYPRIS (Cypris tristriata).Qva\, nearly 

 kidney-shaped, greenish. Lower antennas hairy. Shell 

 with short dark hairs. Swimming in ponds. 



838. CLOUDED CYPRIS (Cypris monacha). Shell rhom- 

 boidal, reticulated, white above, clouded below with 

 yellow green. (PL XL, fig. 1 1 .) 



839. WHITE CYPRIS (Cypris induct). Oval, fringed 

 with short hairs, dull white, with three black bands. 

 Lower antennse hairy. Swimming in ponds. (PI. XL, 

 fig. 8.) 



840. BROWN CYPRIS (Cypris fused). Oval, narrower in 

 front. Covered with fine hairs. Brown. Lower antennas 

 with three hairs. Swimming in ponds. (PI. XL, fig. 10.) 



841. PEARLY CRAWLER (Candona lucens). Kidney- 

 shaped, smooth, except at the edges, which are fringed. 

 Pearly white. Lower antennas bare. Creeping amongst 

 water-plants. (PI. XL, fig. 18.) 



842. HAIRY CRAWLER (Candona hispida). Oval, nar- 

 nowed behind. Brown, with one or two darker marks. 

 Shell covered with spiny hairs. Lower antennse bare. 

 Creeping amongst water-plants. (PI. XL, fig. 17.) 



843. FOUR-HORNED CYCLOPS (Cyclops quadricornis). 

 Common, and well known in every pond. Ovaries double. 

 (PI. XL, fig. 9.) 



844. SHORT-HORNED CYCLOPS (Cyclops brevicorms). 

 With the egg-sacs long and narrow. Sir John Lubbock 

 distinguishes this and six other species in the Kentish 

 ponds as unrecognized British species. 



845. CLAUS'S CYCLOPS (Cyclops Clausit). First de- 

 scribed by Sir John Lubbock, and recorded as common 

 in several localities. (Linn. Trans., vol. xxiv., p. 197.) 



