THE SMOKY CRANE-FLY. 



123 



THE LARVA. 



Larva (fig. 63, a) filiform, 19 mm. in length and 3 mm. in diameter at its 

 widest point when fully extended. General color dirty yellowish brown, dark- 



Fig. 61. — The smoky crane-fly: a, b, Adult male; c, thorax and head, lateral aspect; 

 d, antennal joints I-IV ; e, tarsal joint and ungues ; f, pygidial segments, terminal 

 aspect ; g, end of abdomen, lateral aspect, a, natural size ; b, enlarged ; c-g, much 

 enlarged. (Original.) 



ening to almost black at the extremities. Body composed of 13 segments, the 

 head being about two-thirds incased in the first and entirely retractile within 

 the first two segments. Posterior segment (fig. 03, fc) ter- 

 minated by 4 blunt, radially arranged tubercles, between 

 which are 2 large black spiracles ; when contracted the 4 tu- 

 bercles completely conceal the spiracles; on ventral surface 

 of this segment are 4 large and 2 smaller radially arranged 

 pseudopods, posterior to which is the anus (fig. 63, i). 



Plead (fig. 03, c, e) partly chitinized, 2.1 mm. in length 

 and 1.4 mm. in width. Genal region extending backward 

 from the mandibles and lnaxillas as two strongly convex 

 plates, deeply pigmented on their anterior half and fading 

 out to transparent chitin on their posterior margins. These 

 plates are widely separated postero-ventrally to form the pharyngeal foramen ; 

 antero-ventrally they are continuous with the mentum. Dorsally they appear to 

 55540°— Bull. 85, pt 7—10 2 





Fig. 02. — The smoky 

 crane - fly : Eggs. 

 Highly magnified. 

 (Original.) 



