Bombyliidae. 95 



each side of the three thoracic segments, and a pair of similar brislles 

 at the apex of the body. — The pupa is also figured by Fabre, and 

 the pupa of A. anthrax {sinuata) is described and figured by Laboul- 

 béne (Ann. Soc. Ent. Fr. 3, V, 1857, 781, PI. 15, II, fig. 1—5), and it 

 is described by Ritter v. Stein (Entom. Nachricht. XI, 1885, 306), and 

 fmally described and figured by Verhoeff (1. c. Fig. 66, 67). It [A. tri- 

 fasciata) is brownish yeilow ; on the head there are six strong spines, 

 placed in an arched line and somewhat connected at the base, the 

 whole belng somewhat hke a crown ; the spines of the middle pair are 

 the largest, and they are all directed forwards; on the lower surface 

 of the head there is a pair of spines in the middle line. The second 

 to fifth abdominal segments have each on the dorsal side a transverse 

 row of curious hooklets, they are almost semiannular and each point 

 projects as a more or less erect spine, thus in all forming two parallel, 

 transverse rows of spines on each segment ; on the following segments 

 the hooklets are weaker and less developed. Moreover each segment 

 has a transverse row of long bristles, both on the dorsal and on the 

 ventral surface ; at the lateral margin the bristles are placed somewhat 

 tuft-like. In A. anthrax there are bristles on the dorsal side only of 

 the first and the last two segments. The last segment is attenuated 

 towards the apex and has eight spines. There is a pair of prothoracic 

 and seven pairs of abdominal spiracles. 



The larvæ live parasitically on larvæ of solitary bees and fossorial 

 wasps; cases have often been recorded; van Roser records A. anthrax 

 Schr. {sinuata) from nests of Anthophora (Wiirtemb. Gorrespondenzbl. 

 I, 1840, 52) and Jacqu, Duval from Megachile muraria (Rull. Soc. 

 Ent. Fr. % IX, 185 i, LXXX); Laboulbéne records the pupa of the 

 same from Megachile muraria (Ann. Soc. Ent. Fr. 3, V, 1757, 781, tab. 

 15, II, flg. 1—5) and in nests of Hoplomeriis spinipes (Bull. Soc. Ent. 

 Fr. 3, VI, 1858, CXII); Frauenfeld bred A. trifasciata M. {leucogaster) 

 from nests of Cemonus sp. in deformed reeds (Ver. zool. bot. Gesell. 

 XIV, 1864, 688); Fabre (Souv. Ent. III, 1886, 129) records A. trifas- 

 ciata M. from nests of Megachile muraria^ and A. anthrax Schr. 

 [sinuata] (1. c. 191) from Osmia tricornis; Frauenfeld (1. c. 689) bred 

 A. binotata M. (subnotata) from nests of Megachile muraria; A. tri- 

 punctata Wied. was bred from nests of bees in snail-shells {Osmia 

 andrenoides) (Brauer, Denkschr. Kais. Akad. Wiss, Wien., math. nat. Cl. 

 XL VII, 1883, 62); Ritter v. Stein (Entom. Nachricht. XI, 1885, 306) 

 bred A. anthrax Schr. {sinuata) from nests of Osmia uncinata and 

 A. varia F.? from Osmia sp., and Verhoeff (1. c.) bred A. anthrax 

 {sinuata) from Hoplomerus spinipes. Osten Sacken records (Bull. U. S. 

 Geol. and Geogr. Survey of the Terr. III, 243) that the American species 



