BRUES: NEW PHYTOPHAGOUS HYMENOPTEKA. 265 



a recurrent nervure. Antennae stout and thick, and possibly with the last joint 

 long, as in Arge and its allies. However, this character is not very plainly to be 

 seen on the specimen. 



I have not been able to locate this specimen with any degree of satisfaction. 

 The similarity of the antennae to those of Arge et al. is very striking, but it is 

 possible that the last joint is in reality several closely united ones. From these 

 forms it differs at once by the nou-appendiculate marginal cell and the divided anal 

 cell. The absence of the first transverse cubitus reminds one of Emphytus, but 

 the position of the first recurrent nervure is entirely different. 



Paremphytus ostentus, sp. nov. 



Female. Length 9 mm. Elongate, black, with indications of brownish bands 

 on the abdomen. Head very small, considerably narrower than the thorax and 

 about one-half as thick as wide. Abdomen with nearly parallel sides ; obtusely 

 rounded at the tip where the terebra projects quite distinctly. Wings distinctly 

 iufuscated, especially on the apical half. Marginal cell long, divided, gradually 

 narrowed to the tip, which is rounded but not appendiculate. First submarginal 



Fig. 6. — Parempltytusostentus Brues. Fore-wing. 



cell very long, as long as the second along the radial nervure ; second submargi- 

 nal strongly widened, so that the second transverse cubitus is twice as long as the 

 first. Submedian cell much longer than the median, the basal uervure and the 

 transverse median vein separated on the median vein by a distance almost as great 

 as the length of the basal nervure. Anal cell with an oblique cross-vein. 



Type. — No. 2042, Mus. Comp. Zool., Florissant, Col. (No. 11,586, S. H. 

 Scudder Coll.). 



Pseudosiobla Ashmead. 



Cockerell ('07) has described a single species from Florissant. There are none 

 in the material at hand. 



Taxonus Hartig. 



Two species of Tertiary saw-flies have been referred to this genus. According 

 to Konow, the well-known authority on the classification of these insects, the 

 species described by Heer ('47) as Tenthredo vetusla from the lower Miocene at 

 Eadoboj is referable to Taxonus ('97). 



The second species was described by Scudder in his Tertiary Insects ('90) as 



