152 Mr. Bridginan's additions to Mr. Marshall's 



two central lines. Abdomen about as long and as wide 

 as the head and thorax ; 1st segment gradually tapering 

 to the spiracles, which are situated just behind the 

 middle and not prominent ; post-petiole longer than 

 wide, sides almost parallel, about twice as wide as the 

 petiole, the segment two and a half times as long as the 

 width of the apex, distinctly but finely aciculate; the 

 2nd rather longer than wide, faintly but decidedly acicu- 

 late, the remainder transverse ; the whole abdomen with 

 moderately scattered stiff pubescence, as is the crown of 

 the head ; aculeus about one-fourth of the abdomen. 

 Legs slender. Areolet pentagonal ; transverse ordinary 

 nervure interstitial ; transverse discoidal divided just 

 below the middle ; transverse anal subopposite, divided 

 one-third from the bottom. 



Black ; legs, 2nd and 3rd segments of abdomen, pale 

 chestnut ; these latter have a little darker spot on each 

 side ; hind coxa? black-brown, apex pale ; apical half of 

 hind femora stained with fuscous ; base and apex of 

 hind tibiae and all the tarsi the same colour. Stigma 

 and nervures piceous ; base of wings yellowish. Length, 

 4 mm. 



One female taken by Mr. G. C. Bignell in the neigh- 

 bourhood of Exeter on September 23rd, 1882. 



The structure of the metathorax and sculpture of the 

 abdomen are different from any description that I have 

 seen. 



Theroscopus niger, n. s. 



Niger, pedibus runs, coxis posticis piceis. 



Head shining, with a few scattered white hairs, hardly 

 wider than the thorax, narrow behind the eyes, seen 

 from above somewhat globose. Antennae shorter than 

 the insect ; 1st and 2nd joints of flagellum about equal 

 in length, about four times as long as wide ; the 5th 

 twice as long as wide. Thorax rather longer than high ; 

 mesothorax trilobed, punctate, punctures on the middle 

 lobe running into longitudinal aciculations ; metathorax 

 with finely divided but distinct areae; supero-medial 

 hexagonal, the lower lateral borders shorter than the 

 upper ones ; the posterior face without the lines de- 

 fining a postero-medial area ; the whole metathorax 

 finely rugose and of normal length. Abdomen elongate- 

 ovate, longer than the head and thorax, but not wider ; 

 1st segment without projecting spiracles, about twice as 



