23-i CETONIIX.E. 



spiracles placed upon prominent tubercles near the hind margin 

 of the propygidium, wliich usually bears also two tut'ts of setse 

 near the middle. Pygidium convex and strongly transverse. 



There is no caudal spine in the female. The middle and hind 

 tarsi are generally longer in the male and the pygidium is some- 

 times different in shape, but differences of colour and pattern 

 also occur. The female is much less commonly found than the 

 male. 



Key to the Species. 



1 (30) First joint of hii.d tarsus much 



longer than the 2ud. 



2 (7) Hind tarsus rather broad and flat. 



3 (6) Sides of prothorax gently rounded 



in front. 



4 (5) Sides of prothorax a little con- 



tracted at the hind angles .... dohrm, Kolhe, p. 23-3. 



5 (4) Sides of prothorax not contracted 



at the hind angles liictuosus, Gestro, p. 206. 



6 (3) Sides of prothorax strongly rounded 



in front viduatus, sp. n., p. 236. 



7 (2) Hind tarsus t-imple and slender. 



8 (25) Pj'gidium not covered with decum- 



bent scales. 



9 (18) Pygidium bare and shining, or 



■\vitli a verv few minute setai. 



10 (13) Pygidium red. 



11 (12) Pygidium unicolurous militaris, sp. n., p. 237. 



12 (11 ) Pvgidium white-spotted stictopycjus. Gestro, p. 237. 



13 (10) Pygidium black. 



14 (17; Propygidium mtt covered with 



scales. 



15 (16) Pronotum distinctly tufted in the 



middle tristis, Gestro, p. 238. 



16 (15) Pronotum not distinctly tufted in 



the middle carlonarius, sp. n., p. 239. 



17 (14) Propygidium densely clothed with 



■scales podicalis, Blanch., p. 240. 



18 (9) Pygidium clothed with conspicuous 



erect setie. 



19 (20) Terminal .'^])iracles feebly elevated, msvlaris, sp. n., p. 240. 



20 (19) Terminal spiracles strongly ele- 



vated. 



21 (22) Sides of prothorax. scarcely rounded, trisin-iaitns, Gestro, p. 241. 



22 (21) Sides of prothorax strongly 



rounded. 



23 (24) Colour red hijstri.v, sp. n.. p. 241. 



24 (23) Colour dark, with the pygidium 



light fidvicaudo., sp. n.. p. 242. 



25 (8) Pygidium clothed with decumbent 



scales. 



26 (27) Colour reddish, with black and 



yellow .scales vvicollU, sp. n., p. 242. 



