AMALOPIS. '- 269 



longer than the second (Tab. II, fig. 14) ; spurs of the tibiae rather long. 

 Long. corp. 0.45 — 0.55. 



Stn. Amalopis calcar 0. Sacken, Proc. Ac. Nat. Sc. Phil. 1859, p. 247. 



Front and vertex grayish ; epi stoma brownish-gray ; palpi 

 yellow at the basis, two last joints infuscated ; antennas yellowish, 

 infuscated at the tip ; joints of the flagellum, except the first, 

 short subcylindrical, with short verticils ; finely pubescent on the 

 under side. Thorax yellow ; four reddish or brownish-red, often 

 indistinct, stripes ; halteres pale ; coxaa and basis of the femora 

 pale yellow ; feet yellowish-brown or brownish-yellow, tip of the 

 tarsi darker ; the spurs at the tip of the tibia?, and especially of 

 the hind ones, are longer than usual in this species, divaricated. 

 Abdomen yellowish at the basis, more brownish towards the tip, 

 especially in the male. Wings hyaline, with a slight yellowish 

 tinge ; stigma pale ; the distance between the subcostal cross-vein 

 and the origin of the prsefurca is about equal to the length of the 

 great cross-vein ; the second submarginal cell is shorter than the 

 first ; the second posterior cell is usually petiolate ; discal cell 

 generally closed (the venation is represented, Tab. II, fig. 14). 



Hah. Massachusetts ; Upper Wisconsin River ; White Moun- 

 tains, N. H., where I found it in abundance in June. It seems to 

 be a rather northern species, as I never found it near Washington. 



4. A. liyperborea 0. S. % . — Fusca, alis fusco-maculatis ; venula 

 supernumerary transversa in cellula basali secunda ; cellula submargi- 

 nalis prima secunda longior. 



Brown, wings spotted with brown ; a supernumerary cross-vein in the 

 middle of the second basal cell ; the first submarginal cell is longer than 

 the second. Long. corp. 0.45. 



Syn. Amalopis hyperborea 0. Sacken, Proc. Ac. Nat. Sc. Phil. 1861, p. 292. 



The only specimen in my possession being spoiled by mould, 

 the following description is somewhat incomplete : — 



Body brownish, antennse brown ; feet brownish, basis of the 

 femora paler, tip of the femora and of the tibiae infuscated ; tarsi 

 dark brown towards the end ; halteres infuscated in the middle ; 

 their basis, and the greater part of the knob yellow. Second 

 submarginal cell much shorter than the first, its petiole being 

 comparatively long, but little shorter than the prasfurca ; the latter 

 is comparatively short, strongly arcuated at the basis, and with 



