380 Orthorrhapha brachycera. 



separated from the epistoma; it does not reach the lower margin of 

 the eyes. Proboscis and oral aperture larger in the female than in 

 tiie male, and in the former it is a little protruding, in the latter 

 not. Labrum {anmdipes $) strong, it is strongly canaliculated, with a 

 long, somewhat chitinised median tooth, curved a little downwards at 

 the apex, and with two lower, likewise long, strongly chitinised lateral 

 teeth, directed forwards; hypopharynx of the same length as labrum, 

 elongated triangular, broad at the base, curved downwards at the 

 apex, with a distinct salivary duet; it is somewhat canaliculated with 

 the margins upwards; the maxillary palpi are squamiform, triangularly 

 oval and somewhat pointed. Labium has the basal part as long or 

 a little longer than the labella, it is cleft behind, going out into two 

 long processes; the labella are obliquely ovate, somewhat broad, with 

 distinct, radiating ribs. Thorax rectangular, high, and somewhat 

 arched above; behind, in front of the scutellum, there is a small and 

 indistinct, flat, somewhat declining area; postscutellum somewhat large, 

 with two impressions, converging behind ; pro- and metathorax small, 

 the former with small bristles above; propleura with a few hairs. 

 Acrostichal bristles uniserial, a little irregularly biserial behind; there 

 are six dorsocentral bristles; further a humeral bristle, and a weaker, 

 a posthumeral, two notopleural, a præsutural, three supraalar and a 

 postalar bristle; there are only few, short hairs on the front part of 

 the disc. Scutellum with two marginal bristles and at each side a 

 small hair, besides there are some (4) very small hairs between the 

 bristles. Abdomen somewhat longer than thorax, about cylindrical, 

 but somewhat compressed. In the male there are six visible dorsal 

 segments, the first a little shorter, the others of the same length; on 

 the ventral side there are five segments, the first as usual very small, 

 the second to fourth of .equal length, the fifth shorter; the sixth is 

 folded up for the reception of the hypopygium ; the seventh is quite 

 small and hidden. The hypopygium [ammUpes) is small and round; 

 the eighth segment is large, covering al most the whole left side of the hypo- 

 pygium; there are small, knob-like ventral lobes, and a pair of triangularly 

 lancet-shaped, hairy outer lamellæ, which are somewhat united in the 

 middle; the end of penis and its sheath are straight. The hypo- 

 pygium lies somewhat imbedded at the apex of abdomen, directed 

 downwards and a little forwards; generally the outer lamellæ are 

 seen, protruding downwards, and in front of them the penis. In the 

 female the abdomen is pointed, it has five normal segments, the rest 

 hidden; it terminates with a small, generally hidden ovipositor, which 

 is curved a little upwards and has hairs and some small spines at 

 the apex. There are dot-like impressions at the sides of the second, 



