306 Transactions. — Zoology. 



intermediate between the extremes are found. I have in- 

 cluded a large number of specimens, differing considerably in 

 size as well as in markings on the wings and bodies, under 

 M. variabilis, but intermediate specimens are very numerous, 

 and undoubtedly link the extremes together sufficiently to 

 justify their inclusion in the same species. Of the present 

 species I have four specimens, taken in forest country on the 

 flanks of the Euahine Mountains, closely allied to M. lineola, 

 Meig., of England. 



Mycetophila maculata, sp. nov. Plate XII., fig. 2. 



Length of antennae, 0-04:9 ; size of body, 0-103 x 0-024 ; 

 expanse of wing, 0-110 x 0-055. 



Antennae dark-brown, moderately slender ; joints of sea- 

 pus dark-yellow, first much longer than the second, setae 

 small ; flagellum nearly cylindrical, joints at base much 

 longer than broad, those near the apex about as long as 

 broad, covered with dense pubescence, light near the base 

 but darker near the apex. Palpi dark-yellow. Front dark- 

 brown, with black hair. Thorax dark-brown, lighter on 

 the front and lateral margins, one long spine on each side 

 of the posterior margin. Scutellum dark-brown, with four 

 long black spines on the posterior margin. Metathorax and 

 pleurae black. Halteres white ; club moderate, covered with 

 very fine white pubescence. Abdomen black, with a narrow 

 white stripe on the posterior border of the second, third, 

 fourth, and fifth segments ; abdomen greatly compressed, 

 and covered with black hairs. Legs rather slender ; coxas 

 stout, dark-brown on the outer surface and on the tip ; fe- 

 mora broad, greatly compressed, basal portion yellow, apical 

 portion black, covered with short black hairs ; tibiae rather 

 stout, with several longitudinal rows of black hairs, and two 

 rows of long black spines ; spurs long ; tibige rather light- 

 coloured, with rows of hairs and with spines on under-surface. 

 Wings with yellowish tinge ; brown spot extending from apex 

 of second submarginal cell and origin of third longitudinal to 

 costa ; a brown band extending from apex of first longitudinal 

 to the posterior margin, becoming gradually lighter as the 

 posterior margin is approached ; apex slightly shaded with 

 brown, also a small area situated beneath the apex of second 

 posterior cell. 



This insect is abundant all through the summer. It is 

 closely allied to M. kmata, Meig., of England. 



Bkevicornu, nov. gen. 



Head rather longer than broad. Eyes small, separated by 

 a broad front. Antennae very short; flagellum not three 

 times as long as the scapus, ending in a sharp point. Ocelli 



