Vol. Xxiv] EXTOMOLOGICAL NEWS 446 



cross-vein by the fusion of i? 4 plus 5 on M i plus 2, is a new 

 venational feature for the genus although long known in the 

 related genus Paratrope:;a Schiner. 



Genus Paratropeza Schiner. 



1866. Paratropcca Schiner; Vcrh. Zool. bot. Ge.s. Wien ; vol. 16. p. 

 932. 



A very interesting group of Neotropical crane flies remark- 

 able in the presence of cell R2 in the wings, Paratropeza being 

 the only genus in the tribe that possessses this character (com- 

 pare my key to the Antochini, Psyche, vol. 20, No. i ; pp. 

 40,41; 1913). 



Key to the Species of Parairopeca. 



1. Cross vein r-m obliterated by the fusion ol R 4 plus 5 on 



M I plus 2 2 



Cross vein r-m present 4 



2. Entire thorax blue black; [head dark purplish; wings with three 



dark brown bands, one near the wing base, one along the 



cord and the last on the wing tip; abdomen black, margins 



of the segments yellowish.] (Brazil. Peru), collaris O. S. (l) 



Thorax with at least the scutellum yellowish 3 



3. Thoracic praescutum entirely shiny black ; wings with a narrow- 



brown seam along the radial cross vein; fhcid vi'llnw; abdo- 

 men rust yellow except the base which is hl;ul. 1 i ( . .1 mliia). 



Thoracic prKScutum reddish yellow with three hmail hl.ulc -.tniRs; 

 wings with a narrow seam along the cord, tip of the wing 

 faintly infuscated; [head reddish yellow.] (Mexico). 



praeusta O. S. (3) 

 4. Cell ij/ .1/2 of the wings open, due to the atrophy of the outer de- 

 flection of M3 ; wings with two distinct dark brownish bands ; 

 tip of the wing infuscated. (Brazil)., ./aja'o/oru Wied. (4) 

 Cell \st M2 closed; wings with a narrow brown seam along the 



cord; tip of the wing not infuscated. (Brazil). 

 ' jaclans sp. n. 



(i) Osten Sacken, Bed. Ent. Zeitschr.; vol. 31, p. 190 (1887). 



(2) Schiner. Novara Reise, Dipt., p. 46, pi. 2, fig. 2 (1868). (Type of 

 the genus). 



(3) Osten Sacken, Biol. Cent. Amer., vol. i, pt. i, p. 8 (1886). 



(4) Wiedemann, Ausser. Zweifi. Insect, vol. i, suppl, p. 552, pi. 6b, 

 fig. 11 (1828), (as Limnobia). 



