THEREVA. 75 



paler than those of the male. Knobs of the halteres brown towards 

 the base. Abdomen gilded above, thinly clothed with tawny hairs ; fore 

 borders of the segments black ; tip black, shining, armed with short 

 tawny spines. 

 Not rare. (E.) 



2. fulva, Mg. kl. i. 215. 5 (1804) ; Mq. ; Lw. Mas. Fulvo- 

 tomentosa, abdomine immaculato, pilis nigris ante incisuras nullis. 

 Fcem. Breviter fulvo-tomentosa, abdomine immaculato, segmentis septimo 

 et octavo atris nitidis. Long. 5; alar. 10 lin. 



Fern. Body clothed with bright tawny hairs. Head tawny, beset 

 with a few black bristles behind and above the antennae, having in 

 front of the crown a shining black band whose fore border is notched. 

 Mouth ferruginous. Antennae grey ; first and second joints beset 

 with black bristles. Thorax dark fawn-colour ; scutellum paler. Wings 

 pale grey, slightly tinged with pale brown along the borders of the 

 veins, and with tawny along the fore border. Halteres tawny. Abdo- 

 men tawny ; hind borders of the third and following segments black, 

 shining ; underside grey, ferruginous and shining at the tip ; hind 

 borders of the segments yellow. Legs tawny, beset with black bristles ; 

 femora grey, clothed with tawny hairs ; tips of the tibiae and of the 

 tarsi black. 



Bare. In Mr. Stephens' s collection. (E.) 



3. cincta, Mg. zw. ii. 117. 2 (1820). Nigra, alls subcinereis, 

 abdomine maculis trigonis cervinis bivittato, tibiis fulvis, tarsis basi fulvis ; 

 Mas. abdominis segmentorum marginibus posticis auratis ; Foem. thorace 

 cervino cinereo-trivittato, scutello cinereo-maculato, abdominis segmento- 

 rum marginibus posticis fulvis. Long. 46 ; alar. 711 lin. 



Black, clothed with tawny hairs. Head whitish, clothed with yellow 

 hairs ; hind part, crown, and sides of the epistoma clothed with black 

 hairs. First and second joints of the antennae clothed with black 

 hairs. Sides and hind part of the thorax beset with some black 

 bristles. Wings pale grey ; veins black, tawny at the base and along 

 the fore border. Halteres tawny, with black knobs. Abdomen with 

 a fawn-coloured spot on each side of every segment. Legs black, 

 beset with black bristles ; femora clothed with tawny hairs ; tibiae 

 tawny, with black tips ; first and second joints of the tarsi tawny at 

 the base ; onychia tawny. Male. Hind borders of the abdominal 

 segments gilded. Fern. Two black shining united spots on the crown. 

 Thorax fawn-colour, with 3 grey stripes ; a grey spot on the scutellum. 

 Hind borders of the abdominal segments fawn-colour. 



Not rare. (E.) 



4. funebris, Mg. zw. ii. 121. 8 (1820). lugubris, Mg. kl. Ni- 

 gra, flavo-hirta, alis limpidis, pedibus fulvis, femoribus fuscis. Long. 

 3 ; alar. 6 lin. 



Male. Black, clothed with long yellow hairs. Head clothed with 



