308 Transactions. — Zoology. 



hairs and a few slender short spines ; spurs nearly black, 

 being covered with dense black pubescence ; tarsi nearly black, 

 with dense covering of short black hairs. Wings rather 

 shorter than abdomen, pellucid, microscopically pubescent. 

 Veins pale straw-colour ; costa and first two longitudinals 

 darker, owing to presence of row of black hairs ; slight in- 

 terruption in second longitudinal, just before marginal cross- 

 vein ; fork of third longitudinal long, branches nearly parallel 

 for the greater part of their course ; fork of fourth longi- 

 tudinal long, apex situated just before origin of third longi- 

 tudinal ; posterior branch of third longitudinal disappears 

 before reaching margin ; posterior branch of fourth longi- 

 tudinal slightly wavy, not quite reaching the margin ; fifth 

 longitudinal just reaching apex of fork of fourth ; sixth longi- 

 tudinal very rudimentary. Forceps of the male rather long 

 and slender, bright-yellow in colour, and densely covered with 

 rather stout short hairs. Abdomen darker than in the female. 

 Lamellae of the female slender, light at the base but dark- 

 brown at the tip, covered with short soft hairs. 



I have only two specimens of this insect, one male and 

 one female, taken in Fagtis bush at the foot of Mount Torlesse 

 in March. 



Brevicornu fragilis, sp. nov. Plate XII., fig. I. 



Length of antennae, 0-014 ; size of body, O'llO x 0-006 ; 

 expanse of wing, 0-086 x 0033. 



Antennae longer than in the last species ; scapus yellow, 

 both joints cyathiform, the first longer than the second, both 

 with a fringe of black hairs ; flagellum dark-brown, slender, 

 about four tmies the length of the scapus, covered with a fine 

 pubescence. Front black, covered with a greyish pubescence. 

 Thorax greatly curved, black, but covered with greyish hairs; 

 a few long black hairs on the lateral and posterior margins. 

 Scutellum rather long, with a long black hair on each side of 

 the posterior margin. Metathorax dark-brown. Pleurae black. 

 Halteres with a slender yellow pedicel ending in a white club. 

 Abdomen greatly compressed, laterally black, and covered 

 with hairs; the posterior margins of each segment dark- 

 brown. Legs rather slender; coxae yellow; femora rather com- 

 pressed, yellow, with short black hairs ; tibiee rather long, 

 with short spines on the intermediate and posterior pairs; 

 spurs long, nearly black ; tarsi long and slender. Wings 

 yellowish. Basal portion of second longitudinal vein con- 

 tinuous ; marginal cross -vein short; sixth longitudinal vein 

 longer, but not reaching the margin. 



I have several specimens, taken at Lincoln throughout the 

 summer. The figure is rather incorrectly drawn. 



