Eupuda.] PHYToriiAGA. 205 



ginate ; the thorax is as long as or longer than broad, much narrower 

 us a rule than the elytra, the latter being more or less elongate and often 

 more or less narrowed towards apex ; the legs are long, and the posterior 

 femora are often produced a long distance beyond the sides of the elytra, 

 ami are in many cases armed with teeth ; the anterior coxae are exserted 

 and conical-globose, and the anterior coxal cavities are nearly always closed 

 behind ; the group may be divided as follows into three tribes : 



I. Prostemum distinct between anterior coxse ; posterior coxae 

 almost contiguous ; first ventral segment of abdomen evidently 



longer than second ; apex of mandibles entire SAORINA. 



II. Prostemum very narrow between anterior coxae, which are 



almost contiguous ; apex of mandibles more or less split. 



i. First ventral segment of abdomen as long as or longer than 

 all the rest taken together ; antennae somewhat approximate at 

 base ; posterior coxae widely separated DoNACHNA. 



ii. First ventral segment of abdomen, as a rule, scarcely longer 

 than second; antennae distant at base ; posterior coxae mode- 

 rately separated CRIOCEBINA. 



SAGRINA. 



This tribe contains sixteen genera and upwards of one hundred 

 species ; some of these are large and very conspicuous insects ; this is 

 especially the case with the genus Sagra ; in this genus the hind legs 

 are very strongly developed, so that the species might be thought at 

 first sight to be very large Halticidas ; they appear, however, to use these 

 legs for suspension, and to drop on the least alarm ; only one genus, 

 represented by two species, is found in Europe ; both of these occur 

 rarely in Britain. 



ORSODACNA, Latreille. 



This genus, as at present known, contains fourteen species, which 

 are found in Europe, Central Asia, Ceylon, North America, and Chili ; 

 they are rather elongate insects with the eyes entire, large, round and 

 prominent, and the thorax much narrower than the elytra and contracted 

 behind ; the elytra are subparallel and the legs are moderately long, with 

 the apex of the tibiae spined and the tarsal claws armed with a sharp 

 tooth ; the two British species may be distinguished as follows : 



I. Upper surface glabrous or almost glabrous, less thickly 



punctun d O. CKHASI, L. 



II. Upper surface with thick and rather long pubescence, more 



thickly punctured O. LtNBOlA,Punz. 



O. cerasi, L. A very variable species as regards size and colour, 

 elongate, with the upper surface almost glabrous and the under-side 

 thickly pubescent ; thorax subcordate, sparingly punctured, together 

 witli the head usually rufo- testaceous ; the colour, however, is somo- 

 darker, and the suture and sides of elytra and more or less of the 



