X>R BAIRD ON BNTOMOSTRACA. 153 



not furnished with a pencil of long hairs or filaments. Animal 

 creeps at the hottom, or upon aquatic plants, &c. 



Sp. Ist. — C. Candida. Cypris Candida, Muller. Entomost. 

 Hah. At Cockbumspath, and at Yetholm. 



Sp. 2d. — C. reptans. Cypris rcptiins, Baird. Trans. Berw. 

 Nat. Club. Hah, Yetholm Loch. 



Sp. 3d. — C. hispida. Cypris hispida, Baird. Trans. Berw. 

 Nat Club. Hah. Pool on Beaumont water, Yetholm. 



Sp. 4th. — C. detecta. Cypris detecta, Muller. Entomost, Hah. 

 Pool on Beaumont water, Yetholm. 



Sp. 6th. — C. similis, n. s. 



Genus 3d. — Ctthere — Muller. 



Pediform antennae not possessed of long filaments. Three pairs 

 of feet all external to shell. Animal creeps on marine plants, &c. 



Sp. 1st. — C. flavida, Muller. Entomost. Hah. In pools of 

 sea-water on the shore at Cockbumspath. 



Sp. 2d. — C. reniformis, Baird. Trans. Berw. Nat. Club. Hah. 

 In pools on the rocks on sea-shore at Cockbumspath and Ber- 

 wick. 



Sp. 3d. — C. albo maculata, Baird. Mag. Zool. and Bot. Hah. 

 Berwick bay. 



Sp. 4th.— C. alba, Baird. Trans. Berw. Nat. Club. Hah. Sea- 

 shore at Dunbar. 



Sp. 5th. — C. variabilis, Baird. Trans. Berw. Nat. Club. Hah. 

 At Cockbumspath and Berwick, 



Sp. 6th. — C. aurantia, Baird. Mag. Zool. and Bot. Hah. 

 Berwick bay. 



Sp. 7th. — C. nigrescens, Baird. Mag. Zool. and Bot. Hah. 

 Berwick bay. 



Sp. 8th. — C. inopinata, Baird. Zoologist, i., 196,/. a. h. 



SECTION 3.—C0TEF0DA—Latreille. 



Body divided into several very distinct rings ; envelope consist- 

 ing of a buckler, enclosing head and thorax ; mouth possessed of 

 foot-jaws ; feet generally four or five pairs in number. An ex- 

 ternal ovary. 



FAMILY 1.— CYCLOPIDiE. 



Head distinct from body, not possessing a moveable beak ; body 



