Cimicide. 185 
extending horizontally, far beyond the base of the antenne, 
the sides of which tend to be parallel more than in most of 
the families. Another characteristic of the family is the pre- 
sence of the embolium, a narrow piece on the outside of the 
corium separated off from the disc bya distinct suture. The 
antenne are four-jointed, and the third and fourth joints 
are in some genera much narrower than the other two. 
In the Ceratocombina the first and second joints together 
are not half so long as the third and fourth ; in Triphleps 
the antennz are thicker inthe ¢ than in the ?. The ocelli 
are present in all the genera except Cimez, although not 
always conspicuous in the brachypterous forms. The 
rostrum is three or four-jointed and free except in Cimew, 
where it is received into a groove under the head; the 
pronotum is generally trapeziform in shape, varying con- 
siderably in its length and width. In Cimex a different 
form occurs, the sides being reflexed and widest in front ; 
in the brachypterous females of the Microphysina also the 
trapeziform shape is not always maintained. The scutellum 
is exposed throughout the family ; the elytra vary much in 
form, in Cimex they are always rudimentary, in Ceruato- 
combus they cover the abdomen, but are very rarely fully 
developed, i.e. they are destitute of a membrane; in the 
Microphysina the g only has the elytra developed, those of 
the ? being very short and rudimentary ; the abdomen has 
the connexivum hidden by the elytra. Dr. Reuter says of 
the genital segments of the males in the Anthocorina and 
Mycrophysina, that the genital aperture is asymmetrical and 
placed on the left side of the segment; legs simple, anterior 
femora incrassated in Piezostethus; tarsi two or three- 
jointed. The species of this family exist on animal or 
vegetable juices. 
TABLE OF SUBFAMILIES. 
Rostrum three-jointed, tarsi three-jointed. 
Ocelli absent. ' p E , . CrMicrna. 
3. Ocelli present, 
ro 
