MAY FLIES AND MIIXJES OE NEW YORK 133 



segments, the surface with minute, jiointed. chitinous scale-like 

 jn-ojections. P.od^- smootli and liaiidess; tlic abdominal segments 

 under the higlie.st magnification minutely ininctate; the lateral 

 margins of the last two segments with four or five i)ale, slender 

 filaments. The caudal fin (fig.4j with rounded paddle, and with 

 small, short, marginal setae. 



The imago, female. Head, including front, vertex, back of head, 

 orbit, and basal antenna 1 joint, yellowish. The second antennal 

 joint and a triangular sjiot on vertex polished black; the remain- 

 ing antennal joints, the dorsal surface of proboscis and palpi deep 

 fuscous. Tliorax, including pleura and pectus, yellowish like the 

 head, the last sometimes blackish; the dorsum with three dark 

 brown or black longitudinal stripes, the middle one divided; scu- 

 tellum and metanotum blackish. Abdomen fuseous, each segment 

 s\ith a wide dusky yellow, jvosterior margin; venter dusky yellow, 

 the hair of scutellum and the first abdominal segment stiff and 

 black, the renmining abdominal segments with yellowish hairs. 

 Legs yellowish, the tips of the tibiae and of the metatarsi, and the 

 whole of the remaining tarsal joints subfnscous or blackish. Fore 

 metatarsus about two thirds as long as its tibia. Fourth tarsal 

 joint ob»:ordate. 



Wings subhyaline, hairless, the. radial veins yellow, the basal 

 part of the media and cubitus as far as the crossveins dusky, 

 the latter also darkened; the other veins pale; R^ present, near 

 the apex of R^ ; the cubitus forks far distad of the crossveins. 

 Halteres pale yellow. Length 2^ mm. Ithaca N. Y. 



12. Procladius pinguis Loew 



18G1 T a 11 y p u s Lw. Berl. Eut. Zeit. p.308 



(P1.27, fig.S; pf.l9, figs. 3 and 4) 



The larva is of a reddish color of almost as deep a shade as a 

 O h i r o n o ni u s larva. The single larval skin was lost. The 

 pupa is fuscous; its respiratory trumjiets are white, com})ara 

 tively large^ with the free end open and larger in diameter than 

 at any other point. The surface quite smooth. The abdomen is 

 nearh' devoid of setae, excepting the margin of the last two 

 segments, which are as shown in fig.4, pl.19 ; each with about five 

 filaments on each side. The caudal fin is nearly circular in out- 

 line with a V-shajied notch at the apex, margin ciliate. 



The imago, female. Rlack, shining; wings cinereous hyaline, 

 bare, the heavier veins dark fuscous; halteres white; first i)air of 

 legs pitchy black, bases of femora yellow; middle and liiiid legs 



