MACROCEKA. 69 



subanal forked at one-third of the length, its hind fork curved hindward, 

 and diverging very much from the fore one ; anal extending to the 

 hind border ; subaxillary none ; humeral veinlet very near the base ; 

 areolets thirteen, the humeral, the radical, the subcostal, the radial, 

 the prsebrachial, which is united to the pobrachial and shortened 

 towards the tip, two cubital, three externo-medial, the subapical, the 

 anal, and the axillary. Posterior margin forming a very slight nearly 

 right angle, at more than thrice the length of the humeral areolet from 

 the base. Halteres short. Abdomen linear, or nearly linear, thrice or 

 four times the length of the body. Legs long, slender ; tibiae without 

 spurs; their spurs very small. Male. Antennae longer than of the female, 

 pilose at the tips. Abdomen cylindrical. Fern. Antennae shorter. Ab- 

 domen elongate, fusiform. 



The Macrocera are the most elegant of all the flies of this 

 family of Dryads. They inhabit woods, are especially fond of the 

 shade, and may be often found resting on palings, with their long 

 antennae extended. Synopsis of the species : 



. Antennae twice or thrice the length of the body. 

 b. Wings unspotted. 



c. Thorax striped. Species 1. 



c c. Thorax not striped. Species 2. 

 b b. Wings spotted. 



c. Tips of the wings not clouded. 



d. Thorax not striped. Species 3. 

 d d. Thorax striped. Species 4. 

 c c. Tips of the wings clouded. 



d. Wings striped between the tip of the radial vein and the fork 

 of the cubital vein. Species 5. 



d d. Wings striped before the tip of the radial vein. Species 6. 

 a a. Antennas not longer than the body. Species 7. 



1. vittata, Meig. Zw. vi. 293. 7 (1830); Zeii. dor satis, Curt. 

 Fulva, subtus testacea, palpis, halteribus pedibusque testaceis, antennis 

 nigricantibus basi fulvis, thorace ferrugineo-trivittato, alis subtestaceis, 

 abdomine vitta dorsali nigra, tarsis fuscis. Long. 3-4 ; alar. 6-8 lin. 



Tawny, testaceous beneath. Palpi testaceous. Antennae blackish, 

 tawny at the base. Thorax with three ferruginous stripes, the lateral 

 pair short. Wings with a very slight testaceous tinge. Halteres tes- 

 taceous. Abdomen with a black dorsal stripe. Legs pale testaceous ; 

 tibiae rather darker than the femora ; tarsi brown. 



Not rare. (E.) 



2. lutea, Panz. Faun. Germ. cv. 7 ; Meig. Zw. i. 223. 1 (1818) ; 

 Curt.; Mcq.; Zett.; Gim.; Stseg. Testacea, antennis tarsisque fusces- 

 centibus, illis basi testaceis, alis subcinereis ; Mas, abdominis apice 

 fuscescente. Long 2-3 ; alar. 4-6 lin. Var. Abdomen fuscescens, 

 fasciis testaceis. 



