80 Proceedings of the Biological Society of Washington. 



This is the first fossil species of Trigonalidse to be recorded ; the family 

 consists to-day of a relatively small number of species widely scattered 

 over the world. The present insect should perhaps constitute a distinct 

 genus, on account of the venation of hind wings and very long tarsi, but 

 the anterior wings agree fairly well with Trigonalya, and it appears per- 

 missible to refer the species there. Until rather recently, the species of 

 Trigonalidse have been placed in few genera, but W. A. Schulz, in revis- 

 ing the group, has separated a much larger number. 



Protorthopter a . 



Palaeocarria, new genus (Pachytylopsidse). 



A genua of Protorthoptera, with elongated thorax in the manner of the 

 Spanioderidse, but with the costal area large, the costa arched, the sub- 

 costa ending on the margin, and giving off about six oblique branches, 

 several of which are forked. The surface of the anterior wing is coarsely 

 and very distinctly reticulated, and the cubitus is connected with the 

 media by an oblique vein, exactly as in Pachytylopsis. The anterior 

 wing is ornamented with a series of three large black patches. The hind 

 wing, so far as visible, has almost exactly the venation of Palorthopteron 

 melas. Type P. ornata. 



Palaeocarria ornata, new species. 



Head and thorax, anterior to the insertion of the wings, about 15 mm. 

 long, but the details of structure obliterated. Anterior wings ample, 



Fig. 2. Palaeocarria ornata. 



Fig. 3. Palaeocarria ornata. 



probable length about 45 mm. , of which only 33 mm. is preserved ; mid- 

 dle of first spot about 9 mm. from base of wing and 6 from costal margin ; 

 middle of second spot about 8 mm. from middle of first, the apical side 



