March, 19^0.] ALEXANDER: NEOTROPICAL CrAN E-I'lieS. 13 



ticils conspicuous. Head light gray, more brownish adjoining the inner margin 

 of the eyes. 



Mesonotal praescutum dark brown, the praescutum stripes clear bluish gray, 

 margined with dull whitish gray ; the median stripe is split by a capillary dark 

 brown line that broadens out behind, just before the suture enlarging into a 

 blotch ; immediately laterad of this and occupying the praescutal interspaces a 

 similar short brownish line extending from the suture cephalad ; interspaces 

 sparsely dotted with brown setigerous punctures ; lateral margins of the median 

 stripe at about midlength of the sclerite narrowly and indistinctly margined 

 with brown ; lateral margins and the humeral region of the dark brown ground 

 color ; scutum dull gray, the lobes with a linear dark brown stripe ; median 

 lobe of the scutellum and the postnotum gray pruinose, the latter with an 

 indistinct brown median line. Pleura brown, grayish pruinose; a dark brown 

 longitudinal stripe on the dorsal pleurites ; a dark brown velvety spot imme- 

 diately dorsad of the base of the halteres on the sides of the postnotum and a 

 small white area immediately before the halteres ; dorso-pleural membranes 

 dull yellowish. Halteres dark brown, the base of the stem and the base of the 

 knob paler. Legs with the coxae pale, grayish pruinose ; trochanters and femora 

 dull brownish yellow, the latter with an indistinct brownish ring immediately 

 before their apices; tibiae yellowish brown, the tips darker; tarsi brown; meta- 

 tarsi considerably shorter than the tibiae. Wings white, sparsely streaked and 

 lined with brown ; cells C and Sc strongly yellowish ; stigma brown ; small dark 

 brown marks at h, at the origin of Rs, midway between the two latter, and at 

 the tip of Sc ; larger but slightly paler clouds at the fork of Rs, connecting 

 with the stigmal spot, a large blotch in the end of cell R^ and the middle of cell 

 i?j; a large blotch at the base of cells R and M and along vein Cu in cells M 

 and Cu for almost the whole length of this vein ; grayish clouds in the ends of 

 the anal cells ; the ends of veins A/,, A/,, A/3, Cui and 1st A are seamed with 

 brown. Venation : Base of cell /?. broad ; cell ist M. subpentagonal ; tn-cu 

 obliterated by the fusion of Cu, on -Uj,,; cells R. and .U, are somewhat broader 

 than in T. wittei. 



Abdomen with the first tergite gray pruinose ; remaining tergites dull yel- 

 low with three dififuse dark brown stripes that almost obliterate the ground 

 color except at the base of the sclerites ; sternites dull yellow, sparsely 

 pruinose. Ovipositor almost as in T. wittei but the dorsal basal shield less 

 elongate. 



Habitat. — Argentina ( Patagonia ) . 



Holot\-pe, $, Valle Tunel. Santa Cruz (Dr. WitteV 



