POLYPHEMUS. 
Ill 
Family 2— POLYPHEMID^. 
P olyphemidhs, Baird , Trans. Berw. Nat. Club, ii, 149, 1845. 
— Dana , Proc. Amer. Acad. Arts and Sc., 1849. 
Character. — Four pairs of feet, not contained within 
the shell. Eye very large. Inferior antennae two-branched, 
one branch having four, the other three articulations. 
Lower part of shell forming a large vacant space, for con- 
taining the ova and young. 
This family contains two British genera, Polyphemus 
and Evadne. 
Genus 1 — Polyphemus. 
Polyphemus, Muller , Cuvier , Latreille , Straus , Edwards, Sec,. 
Monoculus, Linnaeus, Geoffroy, Be Geer, Eabricius , Jurine, Sec. 
Cephaloculus, Lamarck, Bose. 
Character. — Head distinct from body. Abdomen long, 
projecting externally from the shell. 
I. Polyphemus pediculus. Tab. XVII, fig. 1. 
Monoculus pediculus, Linnaeus, Faun. Suec., No. 2048, 1746; Syst. 
Nat., edit. 10th, i, 635, No. 5 ; edit. 
12th, i, 1058, No. 5. 
— Gmelin, Linn. Syst. Nat., edit. 13th, i, 3001, 
No. 5. 
— Eabricius, Ent. Syst., ii, 502 ; Sp. Ins., i, 374, 
No. 7 ; Mantissa Ins., i, 240, No. 7. 
— Sulzer, Insecten, t. 30, f. 8 a . 
— Manuel, Encyclop. meth, vii, 718, t. 263, f. 1. 
Monoculus pediculus kamosus, Be Geer, Mem. pour serv. a l’Hist. 
Ins, vii, 467, t. 28, f. 9-13,1778. 
Polyphemus oculus, Muller, Zool. Dan. Prod, No. 2417, 1776 ; 
Entomost, t. 20, f. 1-5. 
— Cuvier, Tab. element, 456. 
— Latreille, Hist. Nat. Crust, iv, 287 ; Genera 
Crust, et Ins, ii, 20. 
— Leach, Edin. Encyc, art. Crustaceology. 
