J. R. MALLOCH 139 



anteriorly; a few short bristles above level of vibrissa. Thorax without 

 strong presutural acrostichals; postsutural dorso-rentrals, four; prealar a 

 little loss than half as long as the bristle behind it; sternopleurals 2:2; hypo- 

 pleura sometimes with a few weak hairs below the spiracle. Abdomen sub- 

 cylindrical, tapered apically; first sternite with bristly hairs; fifth sternite 

 hairy on entire disc, the hairs stronger and longer on lateral apical angles, 

 postmarginal emargination shallow, rounded. Fore tibia unarmed at middle; 

 fore tarsus longer than tibia; mid femur with two or three long bristles and 

 a series of long hairs on postero-ventral surface, and a series of short hairs 

 on antero-ventral ; mid tibia rarely with an antero-dorsal bristle, normally 

 with two postero-dorsal bristles; hind femur with a series of very long strong 

 bristles on entire length of antero-ventral surface, without postero-ventral 

 iM-istles except at apex; hind tibia with from three to five antero-ventral, 

 and two or three antero-dorsal bristles, and a few setulae on postero-dorsal 

 surface at middle; all claws and pulvilli large. Costal thorns uneciual in 

 length, the longest longer than inner cross-vein; outer cross-vein sinuate; 

 veins three and four divergent at apices. Length, 8 to 9 mm. 



Type. — cf ; Algonquin, Illinois, August 16, 1895, (W. A. Nason), 

 [Illinois]. Pamtypes. — Males; Fort Wrangel, Alaska, (Wickham); 

 Grand Lake, Newfoundland, Jul.y 25 and August 1. Four speci- 

 mens. 



Helina nigrita sp. n. 



Male. — Similar to nasoni in color. 



Differs from na-soin in having the third antennal joint much shorter and 

 stoutei-, the thorax with three j^airs of postsutural dorso-centrals, prealar 

 bristle very short or absent, basal abdominal sternite bare, fifth sternite 

 with some strong bristles on each side in line with inner extremity of posterior 

 excision, mid tibia with three very long bristles on the posterior surface and 

 two short ones on the antero-dorsal. Length, 7 mm. 



Typc—d"; Monida, Montana, July 27, 1918. [Illinois]. Pnra- 

 fype. — 1 cf , tojiot^^pical, [Mont. Exper. Sta.]. 



Helina neopoeciloptera nom. nov. 



191S. Aricia pocri'optcra Malloch [nee Stein], Trans. Amer. Ent. Soc, 

 xhv, p. 27 L 



I inadvertently created a homonym in my previous paper on 

 this family in this journal, and it is here proposed that the name 

 lie changed as above. 



Helina linearis sp. n. 



Ma\e. — Black, subo])afiue, densely covered with i^ale gray pruin(>scence, 

 appearing gray, the thorax very indistinctly quadrivittate, the abdomen 

 with faint traces of a black dorso-central vitta. Head with the orbits and 

 cheeks covered with dense \\hite, almost silvery, ])ruinescence; antennae 



TR.\NS. AM. EXT. .SOP., XLVI. 



