CECROPS. 289 



2. PANDARUS Boscn. 



PANDARUS Boscn, Leach, Encyc. Brit. Supp., i, 406, t. -20, f, 1-10 



Diet, des Sc. Nat., xiv, 535. 

 Desmarest, Cous. geu Crust., 339. 

 CALIGUS BICOLOR (var.), Lamarck, An. s. Vert., v, 210. 



Description. This species is extremely similar to the 

 preceding. It is smaller, and the whole body is of a pale 

 colour, without any of the black marks which characterise 

 the bicolor. Most probably only a variety. 



Had.- -Taken from the Squahis initstclttx, Linn., at 

 Torcross, Devonshire ; Dr. Leach. British Museum. 



Family 4 CECROPID^. 



PANDARIENS (pars), M. ]'.// "-ni-ih, Hist. Nat. Crust., iii, Mil. 

 CALIGID/E, RACE n, Leach, Diet. Sc. Nat., xiv. 

 BOPYRIDJE (pars), Risso, Hist. Nat. Eur. nn'rid. 

 CECROPIN^E, Dana, Proc. Am. Acad. Arts and Sc., IS I-'.), ."> I . 



Character. Head as in Pandaridee. One single. 

 lamellar, elytraform appendage on the dorsal surf;i<v ul' 1 lie 

 thorax. Oviferous tubes, concealed under a shield-shaped 

 plate, and twisted in many convolutions. 



Genus 1 CECROPS. 



CECROPS, Leach, Enc. Brit. Supp., i, 1816 ; Diet. Sc. Nat., xiv, 1819. 



Lamarck, Latrdllc, Uesniarest, Nor<l,,itnti>, Bttrmeis/t',; M. l\>l wards. 



Character. Elytraform appendage small, and rounded. 

 First three pairs of feet in the female, and all in the male, 

 fitted more or less for walking, and armed at the tips with 

 short, stout spines. 



Bibliographiccd History. Lamartiniere, who was na- 

 turalist in the expedition sent out under the command of 

 La Perouse, discovered a small parasitic animal adhering 



19 



