1912] New Neotropical Tipuline 361 
has the terminal section of R. more or less preserved.{ I 
prefer to believe that the species represents a new genus to 
which I have applied the above name from the small size of the 
included form. 
Microtipula amazonica, sp. n. 
Bluish grey; o& antennz elongated, 2 short; wings hyaline with 
brown markings. | 
o Length, 6.2 mm.; wing, 7.2 mm.; antennz, about 5.5 mm. 
Fore leg, femur, 4.4 mm.; tibia, 5.9 mm.; tarsus, 9.4 mm. 
Middle leg, femur, 4.5 mm.; tibia, 5.3 mm. 
2 Length, about 6.8 mm.; wing, 7.4 mm. 
Fore leg, femur, 4.9 mm.; tibia, 6 mm. 
Middle leg, femur, 5.2 mm.; tibia, 5.3 mm.; tarsus, about 9.4 mm. 
Hind leg, femur, 4.9 mm.; tibia, 5.4 mm.; tarsus, about 10 mm. 
oHead: Anterior prolongation of the front short, dark brown; 
palpi, lighter, yellowish-brown. Antenne, segments 1—2, yellowish- 
brown; segment 3 brown; remaining segments dark brownish-black, the 
segments elongated, not enlarged basally, covered with a long pale 
pubescence; a few long dark basal bristles. Front brown; vertex and 
occiput clear bluish-grey. 
Thorax: Cervical sclerites bluish-grey; pronotum clear light grey, 
unmarked. Mesonotum, prascutum greyish with a thick blue-grey 
bloom, especially thick on the sides and in front, leaving a cuneiform 
median mark, grey; scutum and scutellum grey; postnotum with a 
decided blue-grey bloom. Pleurz bluish-grey. Halteres brown, the knob 
dark brown. Legs: coxe yellow, greyish pruinose on the front; tro- 
chanters dull yellow; femora yellow, the tip broadly dark brown; tibize 
yellowish brown, the tip darker; tarsi brown. Wings: Subhyaline; cells 
C and Sc dark brown; stigma oval, brown, filling in the tip of cell 
lst R; and the extreme base of cell 2d Ry. Tip of cell 2d Ri, most of 
cell Rs, cephalic portion of R; median portion of M, and seams along 
most of the veins paler brown. Venation (see Fig. 1) as in the genus. 
Abdomen: Tergum, segments 1—2 yellow, dark brown apically 
and on the sides of the sclerites; 5th dark brown, except the basal 
third; 6th mostly yellow, darker, almost black, on the apical half and 
along the lateral margin of the sclerite; 7th black; base of Sth suffused, 
black. Hypopygium (see Fig. q): Sth sternite rather long, at least twice 
as long as the 7th and even higher; 8th tergite short, about two-thirds 
as long as the 7th and not as deep. 9th sternite, viewed from the side, 
rather short, the ventral margin about straight, the caudal end gently 
rounded, with an appendage (e); dorsal side with a rounded, chitinized 
black knob; appendage of the sternite broad, bi-lobed, the ventral lobe 
with a long flexible, finger-like tip projecting caudad and dorsad; the 
upper, or cephalic, lobe lying closely appressed to its dorsal margin, 
elongate-cylindrical, rather fleshy. 9th tergite (in the drawing, Fig. q, 9, 
tPehlkea End. show a species in which Ry seems to be present; the venation, 
apparently, is misinterpreted in the figure. (Zool. Jahrb.; Vol. 32, pt. 1, p. 15.) 
