DESCRIPTION OF NEW SPECIES OF CRANE-FLIES FROM 



CENTRAL AMERICA. 



By Charles P. Alexander, 



Of Cornell University, Ithaca, New York. 



The following crane-flies are among the new species included in 

 the extensive collections of Central American insects in the United 

 States National Museum in Washington. They were sent to me to 

 be named through the kindness of Mr. Frederick Knab, the custodian 

 of Diptera. 



This paper is a contribution from the entomological department 

 of Cornell University. 



Family TIPULIDAE. 



Subfamily ILIlVEIISrOBTJSLAJE. 

 Tribe LIMNOBINI. 



Genus PERIPHEROPTERA Sehiner. 

 Peripheroptera Schiner, Verh. zool. bot. Ges. Wien, vol. 16, 1866, p. 933. 



PERIPHEROPTERA OLIVIAE, new species. 



Thorax reddish; wings yellowish, the veins seamed with brown. 



Female. — Length about 5.2 mm.; wing, 7 mm. 



Rostrum and palpi brownish black. Antennae broken. Head 

 dark reddish brown. 



Thorax reddish chestnut without black markings. Halteres dark 

 brown, the stem a little paler. Legs with the coxae and trochanters 

 reddish yellow, femora reddish brown, the tip broadly black, tibiae 

 brown passing into dark brown at the tip, tarsi dark brown. Wings 

 light yellow, all the veins, cross- veins, and deflections of veins seamed 

 with brown, the stigma large, rectangular, apex of the wing narrowly 

 brown, a large rounded brown mark at the arculus and a smaller one 

 at Sc 2 ; the brown seams to the principal veins are less distinct 

 before their forks, very heavy in the distal part of the wing. Vena- 

 tion as in fig. 1. Cell R 5 with its base distad of the bases of cells R 3 

 and 1st M 2 , cross-vein r-m very short, cell 1st M 2 rather small and 

 square, basal deflection of Cu x before the fork of M. 



Proceedings U. S. National Museum, Vol. 48— No. 2080. 



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