Vol. XXvii] ENTOMOLOGICAL NEWS. 437 



compressed. Abdomen with but three dorsal segments, the 

 first two very short, and with six or seven ventral segments. 



Type of genus Nycterophilia co.rata n. sp. 



The wing venation of this genus differs very much from that 

 of any of the other Streblidae. The genus seems to be nearest 

 to Megistopoda, but the functional wings, the short posterior 

 femora and the much expanded anterior femora separate it at 

 once. 



Nycterophilia coxata n. sp. (Plate XXII, fig. 6 and text-fig. 5.) 



Several males and females from a bat, Macrotus californi- 

 cns (Santa Margherita River, Calif.). 



9. Length, 1.8 mm.; length of wing, 1.3 mm. Color yellow. Head 

 rather small, apparently attached to the upper side of the prothorax. 

 Apex with a crown of stout spines, occiput and cheeks with a few 

 small spines. Eyes quite large, distinctly pigmented, situated close to 

 the apex of the head and consisting of a single facet. 



Prothorax very small, ventrally with a row of stout spines along 

 the posterior margin. Mesothorax and metathorax high convex, much 

 compressed, the mesothorax, in profile, slightly concave anteriorly. 

 Both segments rather sparsely beset with small spines. 



Anterior legs short, the femora much compressed and expanded 

 dorsoventrally, the dorsal margin with numerous stout spines, the inner 

 face with several short, stout, almost tubercle-like spines. Tibia 

 slightly shorter than the femur. Tarsus equal to tibia, five segmented, 

 the last segment somewhat expanded, the claws not cleft. 



Middle and posterior legs in general similar to each other, slender, 

 the middle pair somewhat the shorter. Posterior femora scarcely or 

 not at all exceeding the abdomen. Coxae of middle pair very small. 

 Coxae of posterior pair quite large and bearing a spur on the dorsal 

 margin, this spur arising at the proximal end. 



Wings large, apparently functional. First and second longitudinal 

 veins distinct, the second meeting the anterior margin of the wing 

 slightly beyond half way. A third longitudinal vein is distinct for a 

 very short distance from the base and is connected to the second vein 

 by a distinct cross vein, thence continuing much reduced to the tip of 

 the wing, meeting the margin at the base of a distinct notch. The 

 wing is apparently folded along this vein when at rest. Between the 

 second and third veins are three interrupted veins, apparently branches 

 of the second, and behind the third vein are three more which are ap- 

 parently branches of the third. There are thus in all, nine longitudinal 

 veins, exclusive of the costa, and one cross vein. 



