84 PROCEEDINGS OF THE ACADEMY OF [Part I 



Sci alone being about equal to m; Rs slightly angulated at origin; 

 basal deflection of Cui immediately beyond the fork of M. Ab- 

 dominal tergites light brown, more yellowish laterally; sternites 

 paler. Male hypopygium (Plate IV, fig. 3) with the pleurites mod- 

 erately stout, the outer lateral angle extended into a pale fleshy 

 lobe; two pleural appendages, the ventral appendage a powerful 

 chitinized spike, the base cylindrical, soon bent strongly proximad, 

 slightly enlarged, gradually narrowed to the acute, needle-like point; 

 in the paratype figured, there is a small, acute spine on the cephahc 

 side opposite the bend; dorsal pleural appendage a relatively small, 

 pale, fleshy lobe, the truncated apex provided with about a dozen 

 setae of which one is much more powerful than the others. Gona- 

 pophyses and penis-guard arranged in pairs, there being three sets 

 of structures; the ventral pair arise from an enlarged base, slender, 

 the obtuse tips a little dilated and directed slightly ventrad; the 

 middle pair which are presumably the guards of the penis are longer, 

 the obtuse apices a little dilated; the third or dorsal pair consist 

 of two parallel, cylindrical lobes that bear two or three bristles 

 along the outer margin and two others at the apex of each. 



Habitat. — Peru. 



Holotype, (f , Napo River, June 15, 1920 (H. S. Parish). 



Paratype, cf, Yurimaguas, April 17, 1920 (H. S. Parish). 



' Genus PARATROPESA Schiner. 

 1866. Paratropesa Schiner, Verh. Zool.-bot. Ges. Wien, p. 932. 



The only species of Paratropeza known from the Amazons is 

 P. collaris Osten Sacken. 



Paratropesa collaris Osten Sacken. 



1887. Paratropesa collaris Osten Sacken, Berl. Ent. Zeitsch., Bd. 31, 

 pt. 2, p. 190. 



The type was collected by Bates along the Upper Amazon River, 

 possibly at Teffe. 



Genus TETJCHOLABIS Osten Sacken. 

 1859. Teucholabis Osten Sacken, Proc. Acad. Nat. Sci. Phila., p. 222. 



Teucholahis is one of the dominant crane-fly genera in the Tropics 

 of the New World. 



Teucholabis pulchella Alexander. 



1913. Teucholabis pulchella Alexander, Psyche, vol. 20, p. 44. 



The type is from Igarape Assii, Brazil, January 30, 1912 (H. S. 

 Parish) . 



Teucholabis decora Alexander. 



1920. Teucholahis decora Alexander, Ent. News, vol. 31, pp. 71, 72. 



The type is from Igarape Assu, Brazil, June 25, 1919 (H. S. Par- 

 ish). 



