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512 Mr. J. E. Prins Description of 
(? of emergence) Sept. 10, 1915, and the locality Mamu 
(Gambari), in the Shagamu district about 20 miles 8. of 
Ibadan. They were bred on the road from larvae in an 
exuding wound in the bark of a Cremastogaster ant-tree. 
Notes on the life-history and habits of the larvae will be 
found on pp. 444—45.—E.B.P.] 
M. argyratoides appears closely to resemble M. argyrata 
Hendel from Formosa, which was described as belonging 
to the speciosa-group and presumably differs in having the 
face long, as in that species. Hendel’s species also has only 
one pair of dorso-central bristles, while the male abdomen 
is twice as wide as the thorax, and the third and fourth 
(cubital and discal) veins slightly converge towards tip of 
wing. 
2. M. proectes, sp. n. 
Resembling MW. argyratoides, but thorax rather lighter 
olive-brown. Abdomen with silvery patches at sides only. 
Antennae with yellowish third joint. 
$. Head in profile very much like that of argyratoides but the 
palpi are not so prominent and are wider at the base, while the row 
of bristles from vibrissal angle along the mouth-edge are longer 
and stronger. Face very short but distance from end point of 
frontal lunule to mouth-edge a little less than third antennal joint 
is deep. Frontal lunule with a pair of small bristles. Palpi a 
paler yellowish brown. In the type the paraglossae of proboscis 
project beyond the palpi as diverging pointed lobes bearing a few 
black hairs. Thoracic chaetotaxy as in argyratoides. Abdomen 
the same colour as thorax and rather narrower; viewed in some 
lights the sides of the first four segments are silvery, spreading very 
narrowly across the front margin of the third and fourth segments ; 
front margin of fifth segment very narrowly silvery at sides. Viewed 
directly from behind these silvery patches appear dull black. 
Venter with at least the broad third and fourth tergites silvery in 
some lights. Legs with the front as well as the posterior knees 
very narrowly pale, the femora in some lights appearing silvery 
beneath. Wings faintly tinged with brown, the small (discal) 
cross-vein rather further from base of cell, last portion of discal 
vein rather shorter than penultimate portion and almost parallel 
with cubital; lower outer angle of discal cell rather acute. 
Length 3°75 mm. 
A single male. 
[The specimen formed part of the material, captured at 
ae 
