W. G. DIETZ 351 



processes and the upper process of the lateral appendage of the 

 male, distinguish this species from all others of the group with 

 which I am acquainted. 



Tipula suspecta spec. n. (Plate XIII, figs. 5 and 6; plate XIV, fig. 2.) 



Color yellowish; flagellum, with exception of basal joint, fuscous; wing 

 markings not pronounced: lateral appendages with two processes, the lower 

 broad, obtusely pointed, not clawlike. 

 cf , Length 13 mm.; wing, 13.5 mm. 



Anterior leg: femur, 6.5 mm.; tibia, 10.5 mm.; tarsus, 14 mm. 

 Head yellow; occiput grayish with rather wide median fuscous line, and 

 short blackish hairs each side behind the eyes; front whitish pollinose with 

 a small tubercle in the middle immediately above the antennae; face whit- 

 ish pollinose. Rostrum yellow, scarcely as long as the longitudinal diameter 

 of the eye; nasus beset with yellowish hairs. Palpi beset with rather long 

 scattered black hairs; joints one to three dark yellow, first joint longer 

 than the second; joints two and three subequal; fourth joint fuscous, nearly 

 as long as the two preceding joints together. Antennae long and slender; 

 bent back they reach to base of abdomen; scape yellow; flagellum fuscous, 

 basal joint yellowish, infuscate towards the tip; segments slender, slightly 

 incrassate at base and beyond the middle. 



Thorax: Collare pale yellowish with median fuscous line. Mesonotum 

 grayish-fuscous, pale gray on the sides; lateral stripes concolorous, strongly 

 margined with fuscous except in basal half externally; median vitta broad, 

 fuscous, anterior third narrowed, the median dividing line rather suddenly 

 widened before the middle, thus leaving only a fuscous margin on the sides 

 posteriorly; a pale fuscous spot on the sides behind the suture and a larger, 

 ill-defined, similar spot each side of median line, the latter divided by a 

 narrow, gray line. Scutellum yellowish with median fuscous line not 

 reaching to the apex. Metanotum grayish, infuscate. on the sides. Pleura 

 pale yellowish, gray-white pollinose; a fuscous stripe each side of neck ex- 

 tending upon but not beyond the prosternum; Halteres infuscate, pedicle 

 pale towards the base. 



Abdomen yellow, paler towards the base, with three fuscous, longitudinal 

 stripes, the latter less distinct anteriorly and almost evanescent on the 

 first segment; latero-posterior margins of tergites 3 to 6- paler. Eighth 

 sternite yellowish-fuscous. Hypopygium yellowish fuscous. Ninth ter- 

 gite longer than wide, narrowed posteriorly, with two black, strongly chiti- 

 nized divergent teeth from the underside of the posterior margin; upper 

 apical appendage leaflike, subtruncate at apex; middle appendage dark 

 fuscous, broadly triangular, acuminate above with a rounded, knob-like 

 projection at its base anteriorly; lower appendage trapezoidal, narrowed 

 at base, upper margin deeply incised at junction of first and middle third, 

 the anterior part narrowed, curved, with knob-like enlargement apically, 

 the latter fringed with short, stiff hairs, the posterior wider part rounded 



TRANS. AM. ENT. SOC, XL. 



