NO. 1925. STUDIES IN THE 8UPEBFAMILY ORYSSOIDEA—ROHWER. 143 



cealed and the so-called clypeus may not be the clypeus. This state- 

 ment is made because of the position of the antennae. Considering 

 that the clypeus is consolidated with the front it is necessary to 

 assume that the antennn are in- 

 serted below the clypeus which 

 is improbable. (See fig. 1.) 



Thorax. — ^Pronotum narrow, 

 perpendicular, posterior margin 

 arcuate, posterior lateral margin 

 straight; proepimeron wanting; 

 proepisternum large, meeting 

 ventrally for almost its entire 

 length, forming anteriorly a small 

 circular opening; prosternum 

 small, diamond-shaped in out- 

 line; mesoprescutum wanting ; 

 mesoscutum wider than long, the 

 anterior margin arcuate, the pos- 

 terior margin truncate ; wings in- 



FiG. 1.— ORY.SSUS. (o) Head front view; (6) male 

 antenna; (c) female antenna. 



serted near the posterior third ; meso- 

 scutellum completel}' separated from 

 the mesoscutum, the anterior margin 

 truncate, the posterior obtusely 

 pointed; first thoracic spiracle be- 

 tween the pronotum and mesoepi- 

 sternum ; mesosternum and mesoepi- 

 sternum not separated; mesolocus 

 present ; prepectus distinctly imper- 

 fectly defined; mesoepisternum and 

 mesoepimeron very poorly separated, 

 the suture very indistinct anteriorly ; 

 mesoepisternum with a raised area 

 extending from near lower part of 

 second coxa to tegula; mesosternum 

 and epi3ternum with a transverse 

 suture a short distance before the 

 intermediate coxae; metanotum not 



FlG.2.— ThOEAXOFORYSSUS. ((I)D0ES.'1LA7E-W: J'jt? i- a 1 • J. 1 • 



(6) lateral VIEW. diiterentiated mto areas; cenchri 



present ; metapostnotum wanting ; 

 metepisternum small; metepimeron almost concealed anteriorly by 

 the overlapping metanotum and propodeum, posteriorly large, ex- 

 tending beyond the posterior margin of the propodeum. (See fig. 2.) 



