126 MR. D. SHABP ON SOME 



Anteoderus, nov. gen. 



Corpus angustum, gracile ; caput exsertum ; antennae 11-articulatae, 

 clava parum abrupta, laxe biarticulata. Coxae anteriores angustissimse 

 (listantes, intermedise magis, posteriores maxime, distantes. Metasternum 

 abdominisque segmentum basale elongata. Tibiae subgraciles^ anteriores 

 minute calcaratae, extus ad apicem baud angustatae. 



This is a peculiar genus, which, notwithstanding its contiguous 

 anterior coxae, should no doubt be placed in the Botliri derini ; 

 the coxae, indeed, are not absolutely contiguous, being separated 

 by an extremely slender process ; the surface of the presternum 

 is uneven, possessing a very large depression, and a large irre- 

 gular oblique impression or groove on eacb side. The basal joint 

 of the antennae is quite exposed, and is tbick, the second being 

 similar to those following it ; the club is of the PentJielispa-tj^e, 

 consisting of a large tenth joint, with, which the smaller ter- 

 minal joint is but loosely connected. The three basal joints of 

 the tarsi are subequal in length. The basal ventral segment is 

 as long as the two or three following together. 



Although the general form and the structure of the legs and 

 antennae suggest a relationship with Pycnomerus, the present 

 genus is widely separated therefrom by the elongate first ventral 

 segment and the costate upper surface. 



Anteodeeus costattjs, n. sp. (Plate VI. fig. 10.) 

 Angustulus, baud depressus, rufus, prothorace elytrisque argute costatis. 

 Long. 2i-3 millim. 



Antennae thick. Head with prominent eyes, the vertex rather 

 obscurely quadricostate. Thorax elongate and narrow, narrower 

 than the elytra, much longer than broad, a little narrowed behind, 

 the lateral margin somewhat prominent just in front of the 

 middle ; on the middle in front with a short costiform elevation, 

 which, before it has extended half the length, ceases, to give place 

 to two costae that extend to the base ; and between the middle and 

 the side with an elongate costa extending from the front nearly 

 to the base. Elytra elongate and slender, curved at the sides, 

 each with three slender, acutely elevated costae, and the suture also 

 costate ; the inner rib extends nearly, but not quite, to the ex- 

 tremity, while the second curves round at the extremity, joining 

 the suture, and before the extremity is joined by the raised lateral 

 margin ; the outer rib joins the elongate second rib a little 

 distance before the apex ; except these ribs there is no other 



