180 Mr. C. 0. Waterbouse's neio 



closely punctured, the frontal farrow deep and clearly defined. 

 Thorax longitudinally impressed in the middle, declivous and 

 impressed at the sides, somewhat closely punctured, the punctures 

 very irregular in shape and size ; close to the margin there is a 

 ridge as in T. bitceniatus, but it is not so clearly defined, closer to 

 the margin and more parallel with it. Scutellum strongly trans- 

 verse, the middle of the posterior margin prolonged into a point. 

 Elytra gradually narrowed from the base to the apex, depressed, 

 closely punctured, the punctures not clearly defined and irregular 

 in size. Each elytron has an obtuse costa, commencing about 

 one-third from the base, and nearly extending to the apex ; the 

 apex is obtuse and slightly serrated. There are two rather 

 indistinct fasciae of whitish pubescence, the upper one directed 

 upwards at the suture. Prosternal process closely and finely 

 punctured : the middle of the metasternum shining and more 

 sparingly punctured. All the under surface is sparingly clothed 

 with whitish pubescence. 



Hab. Mexico (coll. Brit. Mus.). 



Cyphothoeax, n. g. 

 Intermediate between Stenogaster and Agrilus. Head gently 

 concave, deeply channelled between the eyes. Thorax transverse, 

 narrowed in front of the middle ; the disk in the middle with an 

 elevated swelling. Scutellum nearly equilaterally triangular. 

 Elytra somewhat flat, subparallel, obliquely narrowed at the 

 apical third ; irregularly punctured, with scarcely any trace of 

 lines. Tarsi moderately short, the basal joint of the posterior 

 pair about as long as the two following joints together ; the 2nd 

 and 3rd joints are furnished below with a pilose pad, but have no 

 distinct lamina ; the 4th joint has a lamina as in Stenogaster. 



I propose this genus for Stenogaster palleolatus, Chevr. 



AUTARCONTES, II. g. 

 I proposed this name for Agrilus mucoreus, King, and some 

 allied species. The thorax is broad and transverse, with an 

 angular prominence at the sides close to the base. The elytra are 

 somewhat parallel for two-thirds their length, and then obliquely 

 narrowed to the apex; the apex of each elytron truncate or 

 slightly sinuate. Each elytron lias an obtuse costa for two-thirds 

 its length, the dorsal space between them more or less flat. The 

 basal joint of the posterior tarsi in A. mucoreus is short; the other 

 species show a gradation to the longer tarsi of ordinary Agrilus. 



