ANNULOSA. 



51 



Sub-ord. 4. Platycopa. 



Fam. a. Cytherellidee Cytherella. 



(G. S. Brady, A Monograph of tlie Recent British Ostracoda, Trans. Linn. 

 Soc., 1866 ; G. 0. Sars, Oversigt af Norges marine Ostracoder, 1865.) 



Fig. 45. Ostracoda. A, Cypridina Alessiiietisis, viewed from the side, and greatly en- 

 larged, one-half of tire shell being removed ; B, Cyprisfusca, viewed from the side, and less 

 highly magnified, the shell-valves being retained, but slightly displaced : o, Antennules; an, 

 Antennas ; o, Eye ; </, Ocellus ; c, Heart ; s, Stomach ; /, Whip-like appendage for the reten- 

 tion of the brood ; aft, Extremity of the abdomen ; m, Mandibular appendage ymx, The first, 

 second, and third maxilkc. 



ORDER II. COPEPODA. 



Fam. a. Cyclopidse. Cyclops (fig. 46), Cydopma. 

 Fam. b. Calanidse. Calanus, Pontella. 

 Fam. c. Notodelphyidse. Notodelphys. 

 Fam. d. Harpacticidse. ffarpacticus. 



(G. S. Brady, A Monograph of the Free and Semi-parasitic Copepoda of 

 the British Islands, Eay Society, 1878-79 ; Clans, Die frei-kbenden Cope- 

 poden, Leipzig, 1863.) 



