Dec., '08] ENTOMOLOGICAL NEWS. 455 



with a long bristle at the tip. Surrounding the stylet is a patch of 

 bristles, on the tenth tergite and sternite. 



Modified Segments in Male. The manubrium is narrow, points 

 downward, is slightly curved to a pointed end. The process is very 

 large, gently rounded at its lower margin where at the distal extrem- 

 ity are two bristles. The upper margin is strongly convex and con- 

 tains on its edge two bristles and numerous hairs. The finger is much 

 smaller than the process, heavy, somewhat crescent-shaped with the 

 pedicle curved strongly upward and bearing in its convex posterior 

 margin near the end two bristles. The ninth tergite is cut off squarely 

 at the end and contains at the upper angle a few hairs. 



The fore coxa has on its outer side about ten long bristles, three 

 obliquely placed near its base, two obliquely placed near its apex and 

 between these an irregular oblique row of five. 



The hind coxa has a row of about six teeth on the inside. The 

 middle and hind femora have no lateral bristles. On the posterior 

 border of the hind tibia is a row of spines in pairs of five groups and 

 on the sides are four pairs of bristles, each pair being obliquely placed. 

 None of the apical bristles of the tibiae, or tarsi are as long as the 

 next joint. On the anterior surface of all of the tarsi is a single row 

 of bristles. The fifth tarsal joint of each leg has four pairs of lateral 

 spines. 



Length of tarsi, hind leg, 10-7-4-3-6; mid. leg, 5-5-3-2-6. 



Length of female, 2.66 mm ; length of male, 2 mm. 



Color, pale brown. 



A Dragon-fly Puzzle and its Solution. 

 BY T. D. A. COCKERELL. 



In the summer of 1907, Mr. Geo. N. Rohwer found the hind 

 wing of an Aeschnine dragon fly in the miocene shales of 

 Florissant, Colorado. In the process of going over the ma- 

 terial, I came upon half the specimen, the rock having split so 

 as to divide the wing longitudinally. Having before me only 

 the inferior part of the wing, and ignorant of the fact that the 

 costal and stigmatic region had been preserved, I set out to de- 

 termine the affinities of the fragment. It seemed a good op- 

 portunity to ascertain whether it was possible to settle the gen- 

 eric position from parts usually considered of minor import- 

 ance. 



I had very well preserved the ends of the radial sector and 

 radial supplement, the ends of the third and fourth branches of 



