1334 COLEOPTERA 



articulo quarto inferne hand posterius lobato-producto, unguiculo 

 interne quam externo vix duplo longiore. 



Long., 12mm. ; lat., 6|mm. 



The male has the basal joints of the front and middle tarsi a 

 little incrassate and very compressed, and furnished beneath with 

 four rows of narrow elongate palettes ; the marginal hairs are but 

 little developed ; the claws on the front feet are short but unequal, 

 the anterior one is a little the longer, and is swollen at the base and 

 bent at a little distance beyond the swelling, so as to give the 

 appearance of an emargination close to the base ; the hinder one is 

 shorter, and its basal thickening extends for about half the length 

 of the claw ; the claws of the middle tarsi are longer than those of 

 the front feet, and are rather slender and nearly equal ; the inner 

 one, however, is rather shorter than the other, and is distinctly 

 bisinuate beneath. 



The Australian specimens are generally larger and in proportion 

 narrower than those from other localities, and often have the front 

 plaw on the middle male feet thicker ; these differences, however, 

 are neither important nor constant. 



Australia, New Zealand, and New Caledonia, common ; South 

 Japan, China, Java, Assam, Himalaya, Egypt, Mesopotamia, Algeria, 

 Southern and Central Europe, but wanting or extremely rare in 

 Northern Europe. 



Lancetes. 



Nov. gen. 

 (Sharp; Aquatic Coleop., p. 602.) 



Extremity of elytra sinuate- truncate. Palpi scarcely or not at 

 all emarginate at the apex of the last joint. Coxal processes elongate, 

 deeply divided, and much divergent. Prothorax margined at the 

 sides. Prosternum thickened along the middle, but not vertical in 

 front ; its process elongate and acuminate, and received into a well- 

 developed cavity on the intercoxal process of the metasternum. 

 Hind coxa moderately large, but the side wings of the metasternum 

 are also large and not deflexed outside the coxse. The coxal pro- 

 cesses are very peculiar; the coxal lines are not greatly turned out- 

 wards to form the coxal lobes, and at the same time the separation 

 between the two lobes is deep and elongate, so that the processes 

 have a greater extension in the longitudinal direction and a less in 

 the transverse one than is usual, and the base of the articulation oi 

 the legs is more imperfectly covered and protected. In all the species 

 (except L. nigriceps) it is easily seen that this middle gap is partly 

 filled up by a growth of the excessively fine margin that in the allied 

 groups borders the inner edge of the coxal processes ; thus along 

 the inner and upper part of this middle separation of the coxal pro- 

 cesses there is seen in L. lanceolatus a sort of broad border marked 

 off by a deep suture. The hind legs are rather elongate and slender, 

 their femora are but little incrassate, and have a series of setigerous 

 punctures placed along the middle of their undersurface, somewhat 



