62 NEW YOHK STATE MUSEUM 



inner side covered witli finer ones; tlie first joint fringed with 

 short, stilf hairs on outer side only; the galea truncate at the tip, 

 which is densely fringed with fine hairs, inner margin with fewer 

 stout hairs, and the inner distal angle bearing a few stout spines; 

 the labium with three-jointed jjalpi, the large ovate galeae with 

 their tips projecting a little l)eyond the tips of the small lanceo- 

 late laciniae, both galeae and laciniae pilose. 



Thorax depressed, widest across prothorax where the pronotum 

 is continued laterally into a wide, thin margin, each margin end- 

 ing anteriorally with a prominent acute process. The wing pads 

 reach to about the base of the third abdominal segment. The 

 legs are rather long, the foreleg being the longest; the fore 

 femora stand almost at right angles to the long axis of the body, 

 the middle femora at about 45°, and the hind femora closeh-^ ap- 

 pressed and nearly parallel with the body; the fore femur bears 

 three or four rows of short spines on its anterior side, and a few 

 stout hairs on its posterior side near the distal extremity; the 

 fore tibia is long, and ifs inner side, as well as that of the 

 tarsus, bears a fringe of long hairs; the former 'bears at its inner 

 aij)ical extremity a long, pointed process closely appressed against 

 the inner side of the base of the tarsus; the inner sides of the 

 fore tibia and tarsus both bear a numiber of small, sharp spines, 

 being the most prominent on the tarsus and the apical process of 

 the tibia. 



Abdomen long and gradually tajiering from about the third 

 segment, tenth segment about as long as wide. Gills present on 

 segnienls 1-7, each gill inserted on a lateral prominence bearing 

 a minute tooth just in front of the gill base, the lateral promi- 

 nence located just in front of the lateral, hinder angle of the 

 segment, directed outward at nn angle of about 45° to the long 

 axis of the body; the first pair of gills small, single and spatu- 

 late, with minute fringes, ai'e curved u])ward against the body 

 and are nearly concealed beneath the edges of the wing pads; the 

 other gills are donble and s]iaj)ed somewhat like a tuning-fork, 

 the two branches linear aicuminate, about equal in length, the 

 outer branch bearing a rounded prominence at its basal end at 

 the outer side; the res]»iratory fihiments long, linear, a.bout one 

 thii'd the length the gill lamina. 



kSetae about half the Icnglli of the body, ])luniose throughout 

 the greater part of their length, and then tail-pointed, the median 

 seta not so stout ;it the bnse as the others. 



'Colors of tlie il>ody chietly brown, amiber on legs and thin mar- 

 gins of the body, an and)er stripe along the dorsal median line 

 of the abdomen; a l)rown l>and on each femur near the distal 

 extremity, and a small brown blotch near the base of each. 



