502 GNATS OK MOSQUITOES — CHAPTER XV 



Meigen's specimen of this species in the Jardin cles Plantes is in a 

 very bad state, even the wings being too mildewed to make out the 

 venation, but the first sub-marginal cell seems very narrow, especially at 

 the base. 



The specimen is very pale, with a slight tint of reddish. The eyes are 

 black; the antennie whitish, with a black band on each joint. Thorax 

 with three clear brown stripes. Abdomen nearly white, with a narrow 

 black band on the hinder border of each segment. Legs very pale and 

 pubescent, with nine black bands on the femora and seven on the tibiae. 

 Wings with the veins very white and pubescent, except the transverse 

 veins which are brownish, so as to form an oblique spot on the middle of 

 the wing. Length of the <? , 2^ lines ; of the 5 , 2 Imes. 



Habitat. — Europe, England ; a comparatively I'are species. 



2. CORETHRA NYBLiEI (Zetterstedt). 



Erioptera nyhlai, Zett. 



Wings with dusky spots and a band over the transverse veins. 

 Legs with apical dusky bands on the apices of the tibite and 

 tarsal joints. Antennae banded. 



Description from Zetterstedt, '• Insec. Lapponica," Col. 830. $ and 

 ? . — Dull, whitish. Thorax with three brown lines, the middle one of 

 which is double ; metathorax with a double spot, with points on the 

 wings, the knees, and on the apices of the tibiae and tarsal joints fuscous. 

 Entirely dull whitish and markedly villous. Antennae pale, with fuscous 

 rings and long hairs ; palpi rather fuscous. Thorax with obscurely 

 bordered brown lines, the lateral ones short and placed behind, the 

 middle one double at the base and produced beyond the middle of the 

 dorsum of the thorax ; metathorax with a double dusky brown spot. 

 Abdomen rather flattened in the dry specimen, with a sometimes inter- 

 rupted, fuscous lateral line, and very minute puncta of the same tint. 

 Wings hyaline grey, with markedly villous veins, the villosity forming the 

 dusky spots mentioned above ; the transverse veins drawn back into a 

 semicircle beyond the middle of the wing and obscurely villous, so as to 

 fonn a lunate band. Halteres white. Length, — Nearly 3 lines. 



Habitat. — Norwegian Lajiland. 



3. CORETHRA PUNCTIPENNIS, Say. 



Cor. trivittata, Loew. 



Wings with several clear brown spots. Legs with numerous 

 brown dots. Antennae banded brown. 



Although Loew's description is much the more complete, there can 

 be httle doubt that the above names are synonymous. Description 

 from Say, " Journ. Acad. Nat. Sci. Philadelphia," iii, p. 16, and from 



