128 
BRITISH ENTOMOSTRACA. 
Hob . — Pond near Isleworth ; ditch near Richmond ; 
June, July, August, and September, but rare, and confined 
apparently to small patches. Pond near Bexley Heath, 
July. Ornamental water in Regent’s Park, July; 
T. Rupert Jones, Esq. - 
Gems 3 — Camptocercus.* 
Lynceus, Muller , et auctoruni. 
Camptocercus, Baird, Ann. and Mag. Nat. Hist., ii ; Trans. Berw. Nat. 
Club, ii. 
Character . — Ovoid-shaped. Abdomen very long, 
slender, and extremely flexible ; much serrated. Beak 
blunt, slightly curved downwards. 
1. Camptocercus macrourus. Tab. XVI, fig. 9. 
Lyncetjs macrourus, Muller, Zool. Dan. Prod., 2397, 1776 ; 
Entomost., t. 10, f. 1-3. 
— Latreille, Hist. Nat. Crust., 207. 
— M. Bdwards , Hist. Nat. Crust., iii, 388. 
Monoculus macrourus, Gmelin, Syst. Nat., 3008, No. 65. 
— Manuel, Enc. meth.,vii, 733, No. 65, t. 268, 
f. 26, 27. 
— Fabricius, Ent. Syst., ii, 499. 
Camptocercus macrourus, Baird, Ann. and Mag Nat. Hist, ii, 91, t. 3, 
f. 5, 6, 1843 ; Trans. Ber. Nat. Cl., ii, 150. 
Of an ovoid shape. Shell pellucid and whitish, finely 
striated or ribbed longitudinally, slightly sinuated and 
ciliated on anterior margin. Beak rounded, and rather 
blunt. Eye small, but areolar, accompanying black spot 
nearly as large as the eye. 
Superior antennae rather long and slender, termi- 
nating setae long also. Inferior antennae or rami short. 
Anterior branch with four long filaments and one short ; 
one long, from second articulation ; three long and one 
* Kafinrog, flexible ; and tctpicog, a tail. 
