﻿22 NINTH ANNUAL REPORT 



Female Fly. — General color of body bright honey-yello. Head black, with all 

 the parts between and below the origin of the antennae, except the tip of the mandibles, 

 dull honey-j'ellow. Antenna? brown-black, often tinged with rufous above, except 

 towards the base, and beneath entirely dull rufou?, except the two basal joints; four- 

 fifths as long as the body ; joint 3, when viewed laterally, four times as long as wide, 

 joints 3-5 equal in lenth, 6-9 very slowly shorter and shorter. In two females the 

 antennoe are 10-jointed, joint 10 slender and f as long as 9. Thorax with the anterior 

 lobe above, a wide stripe on the disk of each lateral lobe which is very rarely reduced 

 to a mere dot, or very rarely the wliole of each lateral lobe, a spot at the base and at 

 the tip of the scutel, the two spots sometimes confluent and very rarely subobsolete, a 

 small spot at the outer end of each cenchrus and a geminate small spot transversely 

 arranged between the cenchri, the tip of the nietathoracic scutel, the front and hind 

 edge above of what seems the 1st abdominal joint, but is in reality the hind part of 

 the metathorax, or very rarely its whole surface above, and also the whole lower 

 surface of the breast between the front and middle legs, or very rarely two large spots 

 arranged crossways on that surface, all black. Cenchri whitish. Abdomen with joints 

 1 and 2 very rarely edged at tip with black. Sheaths of the ovipositor tipped more or 

 less with black, the surrounding parts sometimes more or less tinged with dusky. The 

 triangular membrane at the base of the abdomen above, whitish. Legs bright honey- 

 yellow ; all the coxfe and trochanters whitisli ; the extreme tip of the hind shanks and 

 the whole of the hind tarsi, brown-black. Wings glassy ; veins and stigma brown- 

 black, the latter as well as the costa obscurely marked with dull honey-yellow. In a 

 single 2 all three submarginal cross-veins are absent in one wing, and only the basal 

 one is present in the other wing. In another $ all three are indistinctly present in one 

 wing, and in the other only the basal one and a rudiment of the terminal one. In a 

 single wing of two other $, the terminal submarginal cross-vein is absent. And in a 

 single $ there are but three submarginal cells in either wing, precisely as in the genus 

 Euura. — Length $ 0.22— 0.28 inch. Front wing 2 0.27— 0.33 inch. Expanse of wings 

 $ 0.53 — 0.64 inch, (wings depressed). 



Male Fly. — General color of body black. Read, with the clypeus and the entire 

 mouth, except the tip of the mandibles, dull honey-yellow. Antennae brown-black, 

 often more or less tinged with rufous beneath, except towards the base ; as long as the 

 body, the joints proportioned as in $, but the whole antenna, as usual in this sex, ver- 

 tically much more dilated, so that joint 3 is only 2\ times as long as wide when viewed 

 in profile. Thorax with the wing-scales and the entire coUare honey-yellow. Cen chri 

 whitish. Abdomen with more or less of its sides, the extreme tip above, and its entire 

 inferior surface honey-yellow. Legs as in ?. Wings as in $. In two S the middle 

 submarginal cross-vein is absent in both wings, so that if captured at large they would 

 naturally be referred to the genus Euura. In two other (^ this is the case in one wing 

 only. Another c^ has but the basal submarginal cross-vein remaining in each wing. 

 And in two other c? the terminal submarginal cross-vein is absent in one wing. Length 

 ^ 0.20—0.22 inch. Front wing d" 0.23—0.25 inch. Expanse of wings (^ 0.44—0.54 inch, 

 (wings depressed.'' 



" Described from 22 d and 13 2, 3 c? and 1 2 of the spring brood. 

 The fact of tv70 2, contrary to the established character of the genus 

 Ntmaius., having 10-jointed instead of 9 jointed antennae is a varia- 

 tion of a kind of which no other example in the whole family of Saw- 

 flies is on record. Had such a specimen been captured at large, 

 instead of being bred along with a lot of n.ormal 2, from the same lot 

 of larvce taken from the same lot of bushes, it would probably have 

 been made the basis of a new genus." 



