252 BRITISH GUIANA TIPULIDAE 



Abdomen dark brown throughout; pleurites of the hypopygium very 

 long and slender. 



Female. — Similar to the male but the antennae short and simple, extend- 

 ing about to the base of the first abdominal segment. 



Habitat. — ^Bartica, December 10, 1912 to February 17, 1913. 



Holotype, c^, Bartica, February 17, 1913. 



Allotype, 9 , topotypic, December 10, 1912. 



Paratype, cf, topotypic, January 28, 1913. 



In my key to the species of Polymer a (ibid., 527, 528) this form 

 would run down to P. inornata Alexander, also from British Gui- 

 ana, in which the color of the hind tarsi is not known; in inornata, 

 however, the cross-vein r is almost midway between Sco and the tip 

 of Ri and there is no pleural stripe on the thorax. P. pulchricomis 

 agrees with thoracica Alexander and alhitarsis Williston in its dark 

 pleural stripe, but differs in the dark color of the tarsi. P. grisea 

 Alexander has the cross-vein r very far out toward the tip of Ri, 

 the basal deflection of Cui beyond the fork of M, pleural stripe 

 narrow, etc. 



Tribe Hexatomini 



Genus ERIOCERA Macquart 

 1838. Eriocera Macquart, Dipt. Exot., i, 74. 



Eriocera kaieturensis Alexander 



1914. Eriocera kaieturen^ii^ Alexander, Psyche, xxi, 41, 42, pi. 4, fig. 1. 



Bartica, 9, February 26, 1913; Bartica, cT, April 15, 1913; St. 

 Edwards, 9 , December 2, 1912. 



Eriocera speciosa sp. n. 



Head reddish ; thoracic dorsum grayish brown; wings brown with a broad 

 whitish band lying before the cord; basal segments of the abdomen orange- 

 yellow, tip black. 



AfaZe.— Length, 10.4 to 11.6 mm.; wing, 10.1 to 10.8 mm. 



Female. — Length, 13.1 to 14 mm.; wing, 11.4 to 12.5mm. 



Rostrum and palpi dark brownish black. Antennae with the first seg- 

 ment brownish orange, remainder brownish black. Head fiery orange-yel low. 



Thoracic dorsum brown with a yellowish bloom ; postnotum lighter brown. 

 Pleura light brown. Halteres short, brown, lighter at the base. Legs 

 dark brown. Wings dark brown, the anal cells scarcely if at all paler; a broad 

 whitish band across the wing, this band lying entirely before the cord. 

 Venation, see plate III, fig. 10. 



Abdominal tergites 1 to 5 orange, G velvetj' black, brownish orange 

 around the margin, 7 and 8 velvety black; hypopygium grayish brown; 



