256 BRITISH ENTOMOSTRACA. 



BINOCULUS GASTEKOSTEI, Geoffroy, Ins. de Paris, ii, 661, 1762. 



l.<it,-i-iU?, Gen. Crustac. ct lus., i, 14. 

 OZOLUS GASTEEOSTEI, Lutfe'iH?, Hist. Nat. Crust, ct Ins., iv, 128, 



t. 29, f. 4, 1802 ; Diet. d'Hist, Nat. 



LOUSE OF THE CARP, Baker, Employm. for Microsc., 371, t. 11, f. 1 i. 

 LOUSE or TUE BAXSTICKLE, Baker, 1. c., 37f>, t. \\, f. 15. 

 PETIT INSECTS AQJJATIQ.UE, Ledcnm>llcr, Amus. Micros., part i, 76, 



t. 37. 



MONOCTJLUS CATJDA FOL1ACEA PIANA, Loefliliy, Act. SoC. Reg. Scicut. 



Upsal, t. 2, f. A-D. 



FISCIT-LAUS, Friscli, Insect, in Dcutsch., vi, t. 10, f. a. 

 MOXOCULUS CYPKINACEUS, Shaw, Naturalist's Miscellany, xviii, t.736. 



Descrijtfidi). The Argulus foliaceus is of a rounded, 

 oval shape, the front of the carapace notched on cither 

 side, and bluntly projecting in the centre. It is nearly 

 transparent, of a slightly greenish hue, and elegantly 

 marked on both sides by a series of ramifications of a 

 darker colour. The female is larger than the male, and 

 is distinguished, in addition to the ovaries, by a black 

 mark on each lobe of the abdomen. The last pair of feet 

 is not concealed by the carapace. 



I fab. On the carp and banstickle, St. James's Park, 

 Hnker. Trout (Salmo ffirio) and pike (J&o.r //"///*), 

 W. Yarrell, Esq., J. Doubleday, Esq. Salmon-trout, 

 Belfast, AY. Thompson, Esq. Stickleback, llighgate Ponds, 

 Hammersmith, &c., W. 13. 



Family CALI6ID2B. 

 I.E, M. i:<l>>-, >></*, Hist. Nat. Crust., iii. 

 Baird, Trans. Berw. Nat. Club, ii. 

 (//////>>, Isacli, Diet. tSc. Nat., \i\. 

 -, Ilisi. Nat. Eur. Merid., v, KH. 



t, Cons. ^'11. Crust., o.'Jk 

 CALIGIX.V (///), A'/v/y/-, Tidsskrift, i, 200 (?). 



Bufu'ixt t >f t Boitr. zur Naturg. dcr Kankcnfuss., p. 54, 55(?). 

 Dana, Proc. Amcr. Acad. Arts and Sc., IS 11), p. ."i I. 



r. Head in form of a large buckler, having 

 anteriorU large frontal plates. Four pairs of feet, \\hieh 

 are furnished \vith long j)lumose hairs. Antenna- small, 



