1857.] Entomological Papers. 133 



Pedes tibiis apice 2-ealcaratis, calcaribus 2-serratis, tarsis maris 

 2 anterior ibus art. 1-3 subtus leviter dup licit er que penicillatis, inter 

 me diis for titer simplicitergue penicillatis. Prosternum subhastatum. 



In prov. occid. arenis peraridis Amararum more victitat. 



To judge from what Lacordaire says of this g. in his gen. des col. 

 (a work which, as I have said elsewhere, I look upon as containing 

 the essence of all former researches) it would appear that the pre- 

 sent species differs very materially from the three others hitherto 

 described, namely in the flatness of the antennal joints, in the ser- 

 rated edges of the tibial spurs, in the existence ot the tarsal brnshes 

 in the male and in the colour — to say nothing of some other minor 

 distinctions. The three iirst of these peculiarities (too important 

 not to have been noticed by Lacordaire or any other describer of 

 the g. had they been aware of them) add considerably to the charac- 

 teristics which already constitute this g. one of the most remarkable of 

 the extensive family of the Carabidse, whilst through the colour of the 

 present species it becomes still more closely and more strikingly allied 

 to certain Dyticidse (Hydaticus) than has hitherto been the case. 



The prevailing colour of the insect is deep chestnut, lighter along 

 the sides of the thorax, the elytra darker. The latter are variegat- 

 ed with 2 transverse belts of irregular outline and interrupted in 

 the middle near the suture ; one of these is subhumeral, the other 

 subapical ; they are of yellowish colour and reach from the first to the 

 eighth stria, a small discoloured spot being projected from the sub- 

 hnmeral belt on either side to the ninth stria and a discoloured pro- 

 longation of the other filling the apical angles, with the exception of a 

 dark spot ; the margin is also of a more or less brownish colour. The 

 legs are dark yellowish with chestnut tarsi ; the mouth and antennae 

 are brown, the latter light at the base. These colours vary alto- 

 gether from lighter to darker. The head is of the typical sculpture, 

 it has 2 impressions at the posterior margin of the clypeus and is 

 finely sulcated between the eyes. The antennae are strong, stiff and 

 short reaching hardly beyond the base of the thorax, joint 1 is of 

 middling size, 2 short, 3, 4 are subequal 5 rather shorter, 6-11 still 

 shorter, subequal, joints 3-11 are strongly compressed and pubescent, 

 but only on the narrow side. The labrum is deeply subtriangularlv 

 eiuarginated in front and increases in breadth towards its base. The 



