Spitsbergen and Bear Island. 121 



Fiicomyia frig ida , Fin. 



A single male from Prince Charles Foreland (island west 

 of Spitsbergen), Freshwater Bay district, N.E. of island ; 

 captured on July 4th at Pt. Carmichael at about 40 feet on 

 sandy zone of shingly raised beach. 



The specimen is one of the larger forms (7*5 mm.) with 

 strongly pilose middle tarsi, but has no indication of yellow 

 markings on the abdomen. F, frigida is a species of wide 

 distribution. 



Leria septentrionalis, ap. n., (^ ? , 



Small, uniformly dark grey species, with extensively 

 darkened frons, antennre, and legs ; only one pair of vibrissaa 

 and only one strong sterno-pleural bristle. 



(^. Head with slightly wider space between hind margin 

 of eyes and postocuhir ciliation than in allied species, and 

 face with a fairly distinct central keel, continued upwards 

 between antennae. Occiput, vertex, and narrow frontal orbits 

 dull grey, the frontalia dull brownish black, becoming a 

 lurid red only towards front margin. Face and the deep 

 jowls so densely dusted greyish as to completely obscure the 

 reddish-yellow ground-colour. Antennae with the first two 

 joints reddish, but the almost circular third joint dull brownish 

 black, with reddish tinge at least on inner side about base ; 

 base of arista (apparently the first two joints) conspicuously 

 dilated, the rest slender and microscopically pubescent ; the 

 whole arista short, the distance from tip of arista to base of 

 antenna being conspicuously shorter than frons from base of 

 antennae to vertical ridge. The front orbital bristle quite as 

 long as the hind one (one male specimen is abnormal in 

 having only two orbital bristles in all, and these not placed 

 exactly opposite each other). Only a single strong bristle at 

 vibrissal angle, and a single row behind it (along side of 

 mouth-edge) of quite small bristles. Clypeus dusky. Palpi 

 reddish yellow. 



Thorax uniformly dull dark grey like the occiput and 

 vertex, without darker stripes on disc. A distinguishing 

 feature lies in the shortness of the three anterior of the four 

 pairs of dorse-central bristles; the hind (prescutellar) pair aro 

 moderately long, but the others are hardly twice the length 

 of the short hairs on disc of thorax, though these short hairs 

 are certainly rather longer than usual. Only one strong 

 sterno-pleural bristle ; mesopleura and prothoracic sternum 

 bare. 



