272 EDWARD NORTON. 



% . The mule has the abdomen slender and longer. 



Var. a. 9 S . The dots back of ocelli wanting; mouth mostly white. 

 Four 9 , five % . 



Maine, Massachusetts, New Jersey, Maryland, Virginia, Illinois, 

 ('olorado. 



This is smaller than M. externuii. and differs in having a white line 

 down all the coxte and a short oblique line on the hinder tibine. A 

 specimen from Illinois has the spot on hinder tibia? extending around 

 it. It is possible that this species is a variation from M. epiitotus, Say. 



12. M. albomaculatus. 



Allantus albomaculutus, Norton, Bost. Jour, vii, 1860, 256, 39. 9 *& • 



Macrophya albomaculatus, Norton, Bost. Proc. ix, 118. 

 Black; edge of collar, a spot on all the coxse, trochanters and a line down an- 

 terior legs before, white. Length 0.35 — 0.37. Br. wings 0.65 — 0.70 inch. 



9 . Body Stout ; abdomen not very short ; head wide, closely punc- 

 tured ; antennte as long as to base of abdomen ; nasus deeply incurved, 

 color white, edged with black ; labrum. base of mandibles, edge of te- 

 gulae and of collar yellow-white, sometimes tinged with rufous; legs 

 black ; a large white spot on hinder coxae above and a more slender 

 line on both the anterior pair; all the trochanters, anterior legs before, 

 (sometimes also the medial), tips of medial femora reddish-white ; hinder 

 tibiae and tarsi black, spurs of hinder tibiae long, claws apparently bi- 

 fid ; wings faintly obscured. 



% . Body slender; the four apical joints of antennae dimly ferrugi- 

 nous beneath; nasus not deeply emarginate, black ; labrum piceous; 

 the four anterior legs white beneath, their tai'si white, tipped with 

 black; no white spot on the four anterior coxae; lanceolate cell closed. 



Canada, Maine, Connecticut, Maryland. 



13. Macrophya pumilus, n. sji. 



Black; the four anterior legs white, varied with black, hinder trochanters 

 and coxae white. Length 0.28. Br. wings 0.54 inch. 



% . Black; antennae short and stout, as in AHanfux ; head without 

 obvious depressions about ocelli ; vertex punctured, below ocelli rugose ; 

 nasus but slightly incurved ; labrum wide, truncate ; color of both waxen ; 

 all the coxjie, a wide line on the four anterior femora and a slender line 

 on the anterior tibi;c above, the apex of medial tibiae and of all the an- 

 terior tarsi, hinder coxae above and the hinder legs below trochanters, 

 black, remainder white; wings liyaline, apical half faintly clouded, 

 nervures blackish ; lanceolate cell closed. 



Cayic Mendocino, Cal., (Cambr. Mus. Coll. by A.. Agassiz, Jr.) 

 This has shorter and stouter antennae than M. albomaculatus^ and 

 its hinder coxae are black above, &c. 



