HalticaB.'] PHTTOPHAGA. 335 



b. Transverse impression at base of thorax 

 indistinct; posterior coxae widely distant. 



a*. Upper surface not pubescent . . . HrpprRipmti, Fondr. 

 b*. Elytra et with distinct rows of hairs EPITBIX, Foudr. 

 2. Intermediate and posterior tibia 1 with u tooth on 

 their outer side before apex. 



A. Head large without an elevated keel on fore- 

 head ; lubrutn large ; elytra (in our specie-) 



more or less confusedly punctured CH.CTOCNKHA, Steph. 



B. Head rather small, with nn elevated curved 

 frontnl keel; labrum small; elytra punctured 



in rows PLECTHOBCRLIS, Redt. 



ii. Autennaa 10-jointed; posterior tarsi inserted at 

 some little distance before the apex of tibiae . . . PSYLLIODBS, Latr. 



XiONGXTARSUS, Latreille. (TJtyamis, Stephens ; Teinodactyla, 



Foudras.) 



The members of this genus may be distinguished by having the first 

 joint of the tarsi very long, as long as half the tibia ; the second joint is 

 attached to the first by a socket joint, and the remainder of the tarsus 

 may often be observed bent almost at right angles to the first joint; the 

 head is triangular and projecting, with the frontal tubercles obsolete ; 

 the thorax is more or less transverse, with the sides and anterior and 

 posterior angles more or less rounded, sometimes almost smooth, but 

 usually more or less distinctly, although often very finely, punctured ; the 

 elytra are oval, or oblong oval, with the punctuation usually confused, 

 but in a few species arranged in more or less distinct rows, especially 

 towards base ; the colour is variable, but is very rarely metallic ; up- 

 wards of two hundred species have been described, of whioh no less 

 than one hundred and three are found in Europe, and about forty occur 

 in Britain ; they are widely distributed, and a considerable number have 

 been described from Central America and the tropical portions of North 

 America; representatives also occiir in North America, China, Palestine, 

 India, Ceylon, the Atlantic Islands, South Africa, Tahiti, Cuba, 

 Celebes, &c. 



Many of the species are extremely closely allied, and in consequence 

 are very hard in some cases to determine with certainty ; this is more 

 especially the case with those that are of a testaceous or info-testaceous 

 colour ; the distinctions of many of these depend largely on the colour of 

 the upper and under-side, femora, &c., and unless they are killed and set 

 while fresh the colour soon alters and becomes much darker, especially 

 if laurel has been used ; the distinctions also of punctuation and general 

 shape are also hard to express in words, and in some cases are somewhat 

 variable ; in fact authors often differ considerably in describing the same 

 species, and even contradict themselves in their tables and subsequent 

 descriptions; it is obvious, therefore, that any tables must be regarded as 



each side of the transverse impression are distinct, and it cannot therefore be classed 

 with Ochrofis as here constituted ; in the last European catalogue it is placed with 

 C. Irantvtrta, &.C., under th inb-gruui Arrhenocala of Crrpidodera. 



