228 



BRITISH ENTOMOSTRACA. 



1. Temora Finmarchica. Tab. XXVIII, figs. 1, 1 a-g. 



MoNocuLUs FiNMAUCHiCTJS, Gamier, Act. Hafn., x, 175, f. 20-23, 1765. 

 Cyclops Finmarchicus, Midler, Zool. Dan. Prod., No. 2415. 

 Cyclops longicoknis, Midler, Entomost., 115, t. 19, f. 7-9. 



— Lamarck, An. s. Vert., v, 189. 



— Latreille, Hist. Nat. Crust., iii, 266 ; Gen, 



Crust, et Insect., ii, 26. 



— Bosc, Man. d'Hist. Nat. Crust., ii, 259. 



— Leach, Ediub. Enc., art. Crustaceology. 

 MoNOCULUs LONGicoRNis, Fabriciiis, Eut. Sjst., ii, 501, No. 52. 



— Gmelm, Linn. Syst. Nat., 2997, No. 15. 



— Manuel, Enc. meth., 720, t. 261, f. 11-14-. 

 Calanus Einmauchianus, Leach, Diet. Se. Nat., xir, art. Entomost. 



— Desmarest, Cons. gen. Crust., 364. 



— Krusensler/i' sYoj&ge, Atlas, t. 22, f. 14. 



Descrijjtion. — The body is of a dark brown colour 

 (preserved in spirits). 



Thorax consists of five segments ; the first, with which 

 the head is consolidated, is tlie largest, the other four 

 gradually becoming smaller as they descend. 



The abdomen has onlv three segments, and has a Ions:, 

 bifid, caudal joint, terminated by two short, stout setae, 

 serrated on the edges. 



The antennae or rami (t. XXVIII, f. 1/) are very long, 

 exceeding the body in length, though not quite equal to 

 the body and abdomen together, and are composed of 

 twenty-four short articulations. 



The antennules (f. 1 h) are two-branched. The 

 first branch consists of two joints, the latter of which 

 is deeply notched at the extremity, and is terminated by 

 seven or eight long hairs. The second branch has six 

 articulations, the first and last of which are of equal length, 

 and the four intervening ones are very short. The first 

 joint gives off from its inner edge four long setae, each of 

 the short ones gives off one, and the last is terminated by 

 two or three of still greater length. 



The mandible and its palpiform branch (f. 1 a) are 



