178 The Ohio Journal of Science [Vol. XVI, No. 5, 



FAMILY BYTHOSCOPID^. 



The general characters of this family are well marked, the 

 most conspicuous being the position of the ocelli, which are 

 located on the front below the vertex. As a rule the vertex 

 is short and wide, and with the eyes, is generally or often 

 broader than the pronotum. Definite striations are frequently 

 observed on the pronotum. The elytral venation is frequently 

 obscure. The appended synopsis of genera will indicate the 

 main characters of the genera. 



Like the Typhlocybidge, little is known about the South 

 African representatives of this family. The writer is fortunate 

 in being able to describe a member from each of four of the most 

 prominent genera. 



Synopsis of Genera.* 



A. Antennae inserted in a deep cavity beneath a ledge, 

 b. Striation of the pronotum transverse. 



c. Side margins of the pronotum sharply keeled, of moderate 



length Macropsis 



bb. Striation of pronotum running obliquely from the middle of its front 



margin to the hinder angles Pediopsis 



AA. Antennae inserted in a feeble cavity, their base free. 



b. Head with the eyes wider than the elytra at the base, meml^rane 



with an appendix Idiocerus 



bb. Head with the eyes as wide as the elytra at base, no appendix.. Agallia 



Genus Macropsis Lew. 

 Macropsis subolivaceus Stal. (PI. IV, Fig. 1). 



Bythoscopus olivascens, Stal. Ofv. Vet. Ak. Forb. I. 99 (1855). 



Macropsis subolivaceus, Stal. Hem. Afr. IV. 127. (1866). 



Macropsis subolivaceus, Mel. Beit. Z. Kenn. Hom. Deutch Oost-Afrika 297. 



(1905). 



General color olivaceous. Length, 5 mm. Breadth, 2 mm. 

 Vertex yellow, very short; well rounded anteriorly and distinctly 

 striated. Eyes steel gray, small; width between the eyes four times as 

 long as the vertex. Face short, two-thirds as long as its width across 

 the eyes; frons yellowish. Clypeus greenish, one and one-half times as 

 long as its breadth; lorse prominent, not quite as wide as the clypeus. 

 Ocelli colorless or sanguineous. Pronotum yellowish green, with strong 

 transverse striations on its posterior half, and smaller striations on the 

 middle of the anterior half, but not reaching the margin; about three 

 times as long as the vertex, and about half as long as the width of the 

 pronotum; anterior margin well rounded, the lateral margins of moderate 

 length; posterior half broader than the anterior, being the widest part 

 of the body; convex anteriorly and laterally. Scutcllum a little longer 

 than broad tapering to a i^oint ; about as long as the pronotum ; olivaceous 

 in color, but with two large brown spots at the basal angles, and a 



* 



Adapted from Osborn. 



