104 OTIORHYNCHID^E. [Ho rn. 



truncate or very feebly emarginate at tip. Genae not emarginate. Scrobes 

 short, sub-terminal. Meso- and metasternal side pieces broad, the former 

 diagonally divided. Articular surfaces of the hind tibiae terminal, glabrous. 

 Claws connate. Tenth elytral stria free in its entire extent. Scutellum 

 distinct. 



The above characters serve to isolate a number of genera evidently 

 closely allied among themselves, and also with well-marked affinity with 

 certain members of the tribe Cyphini. The mandibular scar is not promi- 

 nent in any of our genera, but is round and directly on the face of the 

 mandible itself. The deciduous piece is moderately long, glabrous and 

 regularly falciform. The mentum vaiies in size in the genera of this 

 group, but not to the extent of causing Scythropus and Phyllolius to be 

 widely separated. 



The following genera compose this tribe in our fauna : 

 Elytra wider at base than the thorax. 



Mentum entirely concealing the maxillae PHYTjLOBIUS. 



Mentum smaller, maxillae visible at the sides. 

 Rostrum slightly narrower than the head ; 



alee slightly divergent CYPHOMIMUS. 



Rostrum short, stout ; alae not divergent SCYTHROPUS. 



Elytra elongate, oval, as narrow at base as the 

 thorax. 



Mentum small, maxillae entirely exposed MITOSTYLUS. 



In Mitostylus the sub-mentum is very slightly pedunculate. Scythropus 

 has the gula semicircularly emarginate, and the maxillae visible at the sides 

 of the mentum, the other three genera have the gular notch nearly square. 

 In the genera 2 and 4 the mentum is very narrow and the other parts of 

 the mouth very distinctly visible. 



PHYLLOBIUS Germ. 



Phyllolius Germ. Ins. Spec. nov. p. 447. 



Rostrum as long as the head and somewhat narrower, feebly dilated and 

 slightly emarginate at tip. Scrobes in the form of fossets, sub -terminal. 

 Eyes oval, slightly oblique, moderately prominent. Antennae long and 

 slender ; scape slender, feebly clavate, attaining the margin of the thorax, 

 funicle 7 jointed, 1-2 longer, the second slightly longer than the first, 3-7 

 sub-equal, obconical; club elongate oval. Thorax oval broader than long. 

 Scutellum distinct. Elytra broader at base than the thorax, humeri 

 moderately prominent, oblong. Intercoxal process oval. Second segment 

 not as long as the two following united, separated from the first by a suture 

 nearly straight. Femora clavate, the anterior more strongly. Anterior and 

 middle tibiae mucronate, articular surfaces of hind tibiae strictly terminal. 

 Claws connate. Body densely scaly. 



One species is known to me in our fauna which may be merely acciden- 

 tal in its occurrence as I have seen but one specimen. 



