358 bulletin: museum of comparative zoology. 



and continuing along the sides to the front; no line of dehiscence runs 

 towards the ventral surface. The position of the head of the pupa 

 would prevent the use of a ptilinum, as the legs are folded over the 

 head and thorax, the femoratibial joints meeting in the middle line 

 (Plate 2, fig. 10). A movement of the legs would force off the 

 operculum. 



The puparium of L. tolisina is flattened and fastened to the host 

 as in P. i)rogressa. 



The winged, female. After from thirty to thirty-three days in the 

 pupal state, the imago makes its appearance fully winged and with 

 perfect legs (Plate 2, fig. 12, a). It is of a uniform light reddish 

 brown color, 1.6 mm. long with large rounded wings 2 mm. long. 

 The costal vein ends slightly beyond the third vein and bears short 

 bristles; auxiliary vein absent; first vein strong, evenly and slightly 

 curved, joining costal slightly before middle, bearing few bristles; 

 second vein stout until junction of third vein, then thins off, joining 

 costal slightly beyond middle; third vein strong, arising from near 

 base of second, joining costal slightly before its end, bears few bristles; 

 an exceedingly weak branch, indicated by a fold in the wing, arises 

 near its centre and reaches the margin a little beyond the apex; fourth 

 vein stout at its base, thinning out beyond the cross-vein; fifth vein 

 appears as fold in the wing; cross-vein very oblique, appearing as base 

 of vein three (Plate 2, fig. 11, c. v.). The legs are fairly long, tibiae 

 slightly curved outwardly, metatarsus as long as the following three 

 joints together; claws simple, empodium large, and bearing hairs 

 somewhat like the onychium of Rhipiceridae. Front legs well sepa- 

 rated from the hind pair, with coxae far apart; coxae of third pair 

 nearly meeting in the central line; legs covered with short hairs but 

 no special bristles. Thorax large, slightly compressed laterally, dis- 

 tinctly deeper than broad; notum moderately convex; scutellum 

 small. The sclerites are covered with short hairs, and are well 

 separated by the connecting membrane. 



Owing to the enormous size of the proboscis, the distention of the 

 membrane between gena (Plate 2, fig. 12, g) and frons and face and to 

 the large occipital foramen, the head and thorax appear as one piece. 

 The face and front form one piece detached from the gena, and what- 

 ever other sclerites the head may possess, it continues in the same curve 

 as the notum. A pair of large sclerites form the sides of the head 

 (Plate 2, fig. 12, g) and meet beneath. The proboscis is a chitinous, 

 broad, dorso-laterally flattened, blunt cone, with a base somewhat 

 wider than the head or notum, and about half as deep as wide, rounded 



