109. MACEOXYELA. 351 



Subfamily XIV. XYELIKzE. 



109. MACEOXYELA. 



Allied to Xyela, but much larger. 



Head transverse, moderately broad. Antennae 9 -jointed, the 

 first joint much broader and twice as long as the second, the third 

 as long as all the remainder together; the following joints much 

 smaller and thinner, collectively about as long as the first two joints 

 together. Wings with three marginal cells and four submarginal 

 cells ; of the three nervures which divide the latter, the first is re- 

 ceived by the first marginal cell, and the other two by the third ; 

 the two recurrent nervures are received by the second and third 

 submarginal cells respectively ; lanceolate ceE with oblique cross 

 line: hind wings with three inner cells. Abdomen broad, rather 

 flattened; ovipositor stout, distinctly double, projecting to a distance 

 equal to about two thirds of the length of the abdomen ; front tibiae 

 with two small terminal spurs ; intermediate tibiae with at least two 

 middle, and hind tibiae with at least three middle spurs, in addition 

 to the two terminal spurs*. 



Type Xyela ferruginea, Say. 



1. Macroxyela major. 



Xyela major, Cress. Trans. Amer. Ent. Soc. viii. p. 34 (1880). 



Hab. Texas. 



2. Macroxyela ferruginea. 



(Plate XIY. fig. 1.) 



Xyela ferruginea, Say, Long's Second Exped. ii. p. 310 (1824) ; Nort. 

 Tram. Amer. Ent. Soc. ii. p. 348 (1869). 



Exp. al. 8-9 lin., long. corp. 3 lin., cum oviductu 5 lin. 



Chestnut-colour, lightest on the abdomen ; a black spot on the 

 vertex, and on each side of the thorax at the base of the front 

 wings ; metathorax narrowly edged behind with black. AYings 

 hyaline, more or less clouded with yellow ; nervures ferruginous. 



Hab. North America. 



a, ft. $. 



3. Macroxyela infuscata. 



Xyela infuscata, Nort. Proc. Bost. Soc. viii. p. 224 (1861) : id. Trans. 

 Amer. Ent. Soc. ii. p. 349 Q869). 



Hab. United States. 



* It is difficult to determine the number of spurs with certainty, as they are 

 liable to be broken off. 



