46 MYCETOPHILIDJB. 



petiole. Halteres white. Coxae and femora whitish-yellow ; second 

 joint of the coxae and hind femora with black tips, the latter with a 

 black streak at the base on the under side; tibiae and tarsi brown. 

 Male. Abdomen black, shining, clothed with whitish-yellow hairs ; first 

 and second, and occasionally the third, of the ventral segments yellow. 

 Fern. Abdomen black, yellow beneath. 



Rare. (E. I.) 



3. melanoceras, n. "Nigra, antennis totis nigris, alls obscure 

 hyalinis, vena subcostali in costali exeunte contra areolam, furca venae 

 pobrachialis ante medium alee. Long. 1^- ; alar. 3 lin." 



"Black, slightly shining. Mouth and palpi yellowish. Antennae 

 wholly black, filiform, longer than the thorax. Thorax slightly glisten- 

 ing-cinereous, with some yellowish hairs. Wings obscurely hyaline ; 

 veins brown ; the three anterior or costal veins stouter, blackish-brown 

 except at the base ; subcostal vein complete, ending in the costa very little 

 beyond the base of the areolet, which is elongated as in T. Jiirta, but 

 slightly dilated at the tip ; median vein not longer than the areolet, 

 and for the most part pale ; fork of the pobrachial vein opposite the 

 base of the median vein, and therefore longer than the fork of the pree- 

 Irachial, but not so near to the base of the wing as in T. hirta. Halteres 

 whitish. Abdomen elongated, with pale sutures. Legs yellow ; tips 

 of the coxae of the hind femora and (more sb'ghtly) of the hind tibiae 

 brownish ; tibiae darker than the femora, with pale yellow spurs ; fore 

 tibiae bare, the posterior minutely spinulose ; tarsi almost brown ; fore 

 tarsi not twice the length of the fore tibiae, dilated, and slightly com- 

 pressed in the middle." Sal. MSS. 



Very rare. Has been found at Holywood, near Belfast. In 

 Mr. Haliday's collection. (I.) 



" The subcostal vein running to the costal, and the length of the 

 fork of the pobrachial, seem to afford the chief distinctive cha- 

 racter of this species. I should remark that the subcostal vein 

 running to the costal takes away one of the distinctive characters 

 of Tetragoneura, as compared with Sciophila ; but the near ap- 

 proach of the radial to the cubital, and consequent narrowness of 

 the small areolet, and the cubital vein terminating some way before 

 the tip of the wing, with the general resemblance to the other 

 species of Tetragoneura, led me to place it in this genus." Hal. 

 MSS. 



Genus VIII. ASINDULUM. 



ASINDULUM, Latr. H. N. Cr. et Ins. xiv. 290 (1804). Tipula p., F. 



Platyura p., Meig. ; Zett. MacrorrJiyncha, Winn. 

 Corpus elongatum. Oculi oblongi, iutus emarginati. Ocelli tres, fron- 



