No. -2313. NEW SPECIES OF EOCENE INSECTS— COCKERELL. 



259 



long and slender, the last joint somewhat enlarged, claviform; abdo- 

 men shaped as m Chelonmae, without visible sutures, the base sessile 

 but narrow, the apex enlarged, rounded, very obtuse; a long straight 

 ovipositor. 



Stigma large; two inclosed submarginal cells, the outer side of the 

 second extremely weak; transverse medial nervure not meeting the 

 basal. Second submarginal cell large and quadrate. 



Type. — Eohracon claduinLs, new species. 



EOBRACON CLADURUS, new species. 



Plate 36, figs. 5, 6. 



Length (excluding ovipositor) 4 mm.; abdomen 2 mm.; ovipositor 

 2.5 mm.; anterior v/ing 4 mm. long. Head and thorax fuscous 

 (probably black in life); abdomen colorless, with the apex dark 

 fuscous; antennae a little over 3 mm, long, rather more than basal 

 half colorless, the apical part fuscous, the apical joint elongate, 

 swollen. Wings faintly dusky; stigma fuscous; nervures pale brown, 

 second transverso- 

 cubital almost obsolete. 



Type.— V.S.G.S. 1106, 

 and reverse 1112. White 

 River, Colorado (Scud- 

 der collection). 



Ilolotype. — Cat. No. 

 66583, U.S.N.M. 



The venation is not 

 unlike that of Diospilus 

 repertus Brues, from tiie 

 Miocene of Florissant, 

 but the abdomen is very different. The genus appears to belong to 

 the Cheloninae, but to differ from all those now living. 



DESCRIPTION OF PLATES. 

 Plate 32. 



Fig. 1. Palaeoplatywa f eocenica Cockerell, X 6. 



2. Eocalopteryx atavina Cockerell, X 3. 



3. Protamphipteryx hasalis Cockerell, X 2. 



4. Eopodagrion scudderi Cockerell, X 3. 



5. Limnephilus eocenicus Cockerell, X 4. 



6. Hydroptila phileos Cockerell, X 6. 



7. Hammapteryz ? lepidoides Cockerell, X 2. 



8. Rammapteryx ? ceryniiformis Cockerell, X 4. 



Plate 33. 



Fig. 1. Lithopsis delicata Cockerell, X 6. 



2. Lithopsis simillima Cockerell, X 4. 



3. Detyopsis packardi Cockerell, X 4. 



4. Detyopsis scudderi CockereW . v 



"ElG. 11.— EOBRACON CLADURUS. 1. ABDOMEN. 2. EnD OF AN- 

 TENNA. 3. Wing. 



