122 JOHN B. SMITH. 



ENYO Hiib. 

 Verzeicliniss, 132. 



Body, as a whole, long, stout and fusiform ; the head large, promi- 

 nent, broad ; front nearly vertical, flattened and smooth ; eyes large 

 and prominent ; palpi smooth, stout, closely applied to the front and 

 reaching about to the middle. The tongue is stout, about as long as 

 the body. The anteunee are fusiform, rather short, the clothing of 

 cilife very short, at tip recurved into a long pointed hook. The ves- 

 titure is hairy. Thorax rather long, the vestiture smooth, but form- 

 ing a very prominent anterior crest. The primaries are inserted 

 just befoi'e the middle of the thorax. Abdomen long, stout, conic, 

 with a spreading, though not very large anal tuft. Legs unarmed 

 in any way, except for the usual spurs of middle and hind tibiae. 

 The fore legs are shortest, the ])osterior much the longest and clothed 

 with rather long hair, while the others are not so distinguished. The 

 anterior femora are very long, and the anterior portion is interiorly 

 excavated to receive the tibia. Primaries j)roportionately short and 

 narrow, the apex obtuse, excavated beneath to vein 5, where it is 

 again excavated to the anal angle, which is decidedly produced. 

 Internal margin sinuate. Secondaries narrow, the anal angle pro- 

 duced into a broad, rather obtuse angle. Frenelum distinct, in the 

 % running in a loop from costa of primaries, in the 9 without this 

 loop. Primaries with eleven veins, secondaries with eight, the cell 

 short. 



The genitalia of the % are peculiar. The supra-anal plate is pro- 

 duced into a long, straight, acute spine, and the inferior spur is 

 broader, but less than half its length. The side piece is rather long, 

 its superior angle extended, finger-like ; in fact, the end of the side 

 piece is marvelously like the outline of a closed hand with the index 

 linger extended. The males, too, are furnished wath a pencil of 

 yellow hair at the base of the abdomen resting in a groove between 

 the dorsal and ventral portions of the first and second segments, the 

 pencil extending to the middle of the second segment. 



This genus is readily recognized by the prominent thoracic crest 

 alone, which is unique in our fauna. The peculiar modification of 

 the supra-anal plate and hook is interesting, and is not paralleled 

 elsewhere in the family. The thorax is produced to an unusual ex- 

 tent before the base of jn-imaries. There is only a single North 

 American species. 



