HYPERIDEA. 



1009 



Stjbfam. 2. PRONOIN.E.— Abdomen in ventrem se non flectens. 

 Caput non oblongum, antennis in capitis frontem insitis. 



G. 1. Pronoe, Guerin.— Pedes 2di non prehensiles. Pedum 6 posticorum articuli 



lmi lati, reliqua parte paris 7mi fere obsolete. 

 G-. 2. Lyclea, Dana.— Pedes lmi 2dique subchelati. Articuli pedum 6 posticorum 



lmi angusti, subsequi, reliquS, parte paris 7mi paulo abbreviate 



Subfam. 3. OXYCEPHALIN^E.— Abdomen in ventrem se non flec- 

 tens. Caput oblongum, antennis lmis superficiem capitis inferiorem 

 insitis. 



G. 1. Oxycephalus, Edw.— Caput breviter acuminatum. Styli caudales longitu- 

 dine mediocres. 



G. 2. Rhabdosoma, White. — Caput rostro longo styliformi armatum. Styli cau- 

 dales valde elongati. 



Subfamily TYPHINiE. 

 Genus DITHYRUS, Dana. 



Abdomen ad ventrem optimh claudens. Caput transversum, pigmentis 

 non grandibus. Antennce 2dce sub capite celatce, breves, non replicator. 

 Rdes 6 postici coxis latissimi clypeati, parte pedum reliqud obsoletd. 

 Pedes 4 antici subcheliformes. Abdomen 5-articulatum, segmento 

 ultimo triangulato. 



Abdomen shutting well upon the venter. Head transverse, pigments 

 not large. Posterior antennae concealed beneath the sides of the 

 head, not folded. Six posterior feet reduced to mere coxse, which 

 are very broad clypeate. Four anterior feet subcheliform. Abdo- 

 men five-jointed, last segment triangular. 



This genus is peculiar in having the six posterior legs reduced to 

 mere coxse, which are broad plates adapted to close over the whole 

 venter from the head some distance backward, and fitting well to- 

 gether. This leaves a triangular opening behind, which is filled by 

 the abdomen, making as tight and neat a box as any work of art. 

 The abdomen, unlike that of Thyropus, is shorter than the thorax, it 



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