POLYPHEMUS. Ill 



Family 2 POLYPHEMID^l. 



.s, 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, Midler, Cuvier, Latreille, Straus, Edwards, &c. 

 MONOCULUS, Linnaeus, Geoffrey, De Geer, Faliricms, J-tirine, 

 CEPHALOCULUS, Lamarck, Bosc. 



Character. Head distinct from body. Abdomen long, 

 projecting externally from the shell. 



I. POLYPHEMUS PEDICULUS. Tab. XVII, fig. 1. 



MONOCULUS PEDICULUS, Linnceus, 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. 



Fabricms, Ent. Syst., ii, 502; Sp. Ins., i, 374, 

 No. 7 ; Mantissa Ins., i, 240, No. 7. 

 Sulzer, Insecten, t. 30, f. 8 a. 

 Manuel, Eucyclop. meth., vii, 718, t. 263, f. 1. 



MONOCULUS PEDICULUS RAMOSUS, De Geer, Mem. pour serv. a 1'Hist. 



Ins., vii, 467, t. 28, f. 9-13, 1778. 

 POLYPHEMUS OCULUS, Midler, Zool. Dan. Prod., No. 2417, 1776 ; 



Entomost., t. 20, f. 1-5. 

 Cuvier, Tab. element., 456. 

 Lati-eille, Hist. Nat. Crust., iv, 287 ; Genera 

 Crust, et Ins., ii, 20. 

 ?, Ediu. Encyc., art. Crustaceology. 



