236 Transactions. — Zoology. 



margin of the wing at the apex ; branch of third longitudinal 

 very indistinct. Surface oi wings clothed with long black 

 hairs ; fringe long. 



I have only one specimen, of a male insect. (Lincoln, 

 February.) 



Diplosis melana, n. sp. — Antennae, 0-035 ; expanse of wing, 

 0077 X 0029 ; body, 0-033 x 020. Antennee dark-brown ; 

 joints of flagellum cylindrical, more than twice the length of 

 their pedicels, ornamented with a few short verticillate hairs ; 

 terminal joints slightly shorter than the others, and conical 

 in shape. Head black, with short hairs rising from its 

 posterior border. Thorax black, and hairless except for a few 

 tufts arising from the shoulders. Scutellum dark-grey. Ab- 

 domen black, ferruginous on the flanks ; a few hairs on the 

 sides of the segments with silvery reflections. Halteres with 

 short pedicels clothed all over with black and grey hairs ; 

 club pyriform, small. Legs moderately long, dark-brown, 

 covered rather thinly with black hairs ; femora rather stout ; 

 tarsi lighter in colour than the proximal joints. Wings 

 with a grey tinge, a few short hairs scattered over their sur- 

 face. Veins yellowish-brown except the second longitudinal, 

 which is black ; first longitudinal joining the costa about 

 half-way from the base of the wing, the transverse vein, which 

 is almost colourless, joining it at about two-thirds of its 

 length ; second longitudinal reaching the margin at the apex 

 of the wing; apex of fo)-ks of thii'd longitudinal below end of 

 second longitudinal. 



I have only one female specimen. (Lincoln, November.) 

 Diplosis viinida, n. sp. Female. Antennae, 0-026 ; expanse 

 of wings, 0050 x 0-018 ; body, 0-030 x 0-011. Antenna? black; 

 joints of flagellum with short pedicels, about one-third the 

 length of the joints; cylindrical, ornamented with short 

 black verticils. Anterior portion of thorax black, becoming 

 red towards the extremity ; a few white scattered hairs on 

 its surface. Scutellum red. Halteres with slender pedicels ; 

 club small, pyriform, covered like the pedicels with scattered 

 black hairs. Abdomen with the anterior segments dark- 

 brown, but becoming red towards the posterior end ; a few 

 scattered hairs with silvery reflections situated on its surface. 

 Legs rather short, dull-yellow in colour, covered with hairs 

 black in colour but giving silvery reflections ; tibise slightly 

 shorter than the femora ; first and fifth joints of the tarsus 

 about the same length, second joint about twice the length 

 of the third, which is longer than the fourth. Wings hyaline, 

 with yellow reflections. Costa and second longitudinal dark- 

 brown in colour, the others light - grey ; first longitudinal 

 ending at about one-third along the costa ; second longitu- 

 dinal ending at the apex ; branch of third longitudinal forms 



