432 A7inals Entomological Society of America [Vol. XI, 



smooth and silky in appearance ; prothoracic femur sometimes showing 

 a narrow portion about 1.5 mm. long; antennas roughened, with 

 transverse striations, scarcely tuberculate, extending half way between 

 the distal ends of the prothoracic and mesothoracic legs; metathorax 

 with a prominent transverse ridge set off by a distinct furrow on each 

 side; abdomen sometimes showing traces of annulets on the first 

 three segments; cremaster 1.5-2 mm. long, rugose and punctate. 

 Length of pupa 20-27 mm., greatest width (i-7 mm. 



Subfamily Philampelin^. 



Of the genera comprising this subfamily, Pholus and Proser- 

 pinus have been discussed in connection with the Sesiinas. The 

 remaining genera, Ampeloeca, Darapsa, Sphecodina, Deidamia, 

 and Amphion, together with Proserpinus are included in one 

 tribe by Rothschild and Jordan while Pholus is in another. 

 I can scarcely understand the position of Proserpinus, but as 

 so few of these forms have been available for study, hesitate to 

 express an opinion. With this exception the group consists of 

 rather short, somewhat "stumpy" pup«, with the labrum 

 usually near the cephalic end of the head, but not carried over 

 on the dorsal surface. The maxillae always reach the caudal 

 margin of the wings, but are often excurved at the proximal 

 end. The antennae are normal. There is never any portion of 

 the prothoracic femur visible, except in Darapsa and Pholus. 

 The glazed eye-piece usually touches both antenna and maxilla. 

 There are no spiracular furrows present. 



Genus Pholus Hbn. 



The pupae of this genus are among the largest of our common 

 species, normally two inches or more in length. The body is 

 typically sphingiform with a distinct "shouldered" appear- 

 ance, and always bright chestnut brown. The labrum is on the 

 dorsal surface a short distance from the cephalic end of the 

 body, so that the maxillae rise on the dorsal aspect of the head 

 and extend to the caudal margin of the wings. The mandibular 

 region usually shows a prominent tubercle on each side the 

 labrum and these are prominent in dorsal view. The antennas 

 are filiform and slightly longer in the male. A small portion 

 of the prothoracic femur is always exposed. The metathorax 

 has a prominent transverse ridge on each side the meson. The 

 scar of the caudal horn is always smooth and polished. The 

 cremaster is triangular and usually ends in a sharp point. 



