Cutiterebra and its Allies in the British Museum. 389 



of head 8 millim. ; width of thorax at base of wings 8| 

 millini. ; width of abdomen (second segment) 10 millim. ; 

 length of wing 16i millim. 



Black ; dorsum of the thorax, except a small area on the 

 anterior margin, clothed with Hack pile; central portion of 

 the pleura also clothed with hlack pile ; abdomen metallic 

 hrassy green, shining, thickly clothed with silky golden-yellow 

 pile, with a conspicuous hand of hlack pile on the posterior 

 margin of the third segment, the base also clothed with black 

 pile. 



Head entirely clothed with shimmering pale golden pollen, 

 thinly covered with short pile of the same colour, which is 

 longer and thicker on the cheeks below and nearly conceals 

 the oral cleft ; occipital margin of the vertex brownish, with 

 a blackish-brown triangular mark enclosing the upper angle 

 of each eye, and bearing a few short black hairs ; ocellar 

 tubercle also with a few black hairs ; antennary pit greyish 

 pollinose ; antenncednvk brown, first and second joints clothed 

 with pale golden pile above, third joint ovate, about half as 

 long again as the two former taken together ; arista dark brown 

 at the base, reddish brown towards the tip, cilia pale yellowish ; 

 lunula frontalis brownish black, shining; on each side of the 

 face and touching the margin of the eye opposite the third 

 joint of the antenna a large shining black spot, with the upper 

 margin straight and bluntly conical below, sparsely punctuate 

 and bearing a few pale golden hairs ; the upper margins of 

 these spots are on a level with the base of the third joint of 

 the antenna ; they are separated from the fissura frontalis by 

 barely half their width ; a similar spot, rather larger in .size 

 and subquadrate in shape, on the cheeks near the lower margin 

 of each eye, and directly below the upper spot ; a small bare 

 triangular fleck between the lower spot and the eye, touching 

 the lower margin of the latter. Thorax : anterior surface 

 clothed with golden pile, which extends to a distance of 

 2 millim. as a semilunar patch on the anterior margin of the 

 dorsum; this patch is scarcely yisible when looked at from 

 above, but conspicuous when the insect is viewed from in 

 front ; scutellum black and clothed with short black pile above, 

 yellowish pollinose below, and with a few short yellowish 

 hairs projecting from below the posterior margin ; pectus 

 clothed with deep yellow pile, which runs up on to the pleuras 

 in two stripes ; the anterior of these, which is the broader, 

 forms an arch over the prothoracic stigma and is in connexion 

 with the yellow pile on the anterior surface, while the posterior 

 stripe terminates in a tuft in front of the squamge. Abdomen : 

 first and second segments clothed with short black pile, sides 



