NEW SPECIES OF AFRICAN SIMUI.HDAE. 463 



band oi golden-yellow pubescence across basal third ; tarsi almost black, second tarsal 

 joint with excision near base, claws with distinct tooth at base. Genitalia very similar 

 to those of .S. unicovnutum, Pomeroy ; the general size appears to be smaller anfl the 

 adminiculum not so long and the styli more prominent. 



Nigeria: Ubiaja, 15. i. 1921. 



Type in the British Museum. 



Described from pupae found in swift hill-streani, alt. 900 ft. Bied from isolated 

 pupae. 



?. Length, I -5 mm. Head : antennae fuscous, covered with silver-grey pubescence, 

 1st, 2nd and part of 3rd segments honey-yellow ; frons bare, slate-blue pollinose ; 

 face fuscous-blue pollinose in some lights, bare except for a few black bristles. Thorax 

 dark brown, shining, covered with dark brown pubescence and with a few golden 

 hairs, more numerous in front and laterally ; scutellum fuscous, covered with long 

 black bristles. Pleurae fuscous, lacking patch of soft hairs. Wings hyaline, radius 

 unforked. Abdomen very dark brown, almost black, thickly covered with black hairs, 

 last four segments shining dorsally. Legs : front legs with coxae fuscous, femora 

 brown, with a pale yellow area at middle and along frontal margin, tibiae dirty 

 yellow, banded dark brown just below base and at apex, tarsi dark brown ; hind legs 

 with coxae yellow, femora dark brown, paler at middle, tibiae dark brown, pale yellow 

 at basal joint and with an oblique yellow band across middle ; basal two-thirds of 

 metatarsus yellow, remainder of tarsus brown, second tarsal joint with excision near 

 base, claws with thick prominent tooth. 



Described from specimens reared from isolated pupae taken on same date and 

 from same locality as male type. Not found biting. 



This species differs distinctly from 5. unicornutimi, Pomerov, in the darker colour- 

 ing of the legs, the colour and pubescence of the thorax, especially the scutellum, 

 and also in the colour of the frons and face. There is no appreciable difference 

 in the male genitaha, except in size and possibly in the adminiculum. The pupa, 

 however, is very distinct and constant in the formation of the respiratory filaments, 

 and on the several different characters of this and the adult stage the writer considers 

 it to be a distinct species. 



Pupa. — The respiratory filaments are somewhat similar to those of S. unicornuium, 

 and consist of a single bent tube on either side (PI. xiv, fig. 5). The angle at the 

 base, however, is very distinct and more acute, and the tube is constricted into a 

 series of globes. This globular appearance is very noticeable in the natural state, 

 and in prepared mounts it may be seen that it is the result of the arrangement of 

 the chitin forming the walls of the tube. The cocoon is of the wall-pocket type, 

 very strong and without side openings. Described from many specimens similar 

 to that from which male type emerged. Taken same locality and date. Material 

 placed in the Biitish Museum. 



