LONCHAEIDAE SAPROMYZIDAE. 41 



which lives on the olive-tree, and Petalophora capitata, exclusively 

 dependent on the lemon-tree, are in all respects strangers in the 

 European Fauna, so they appear to be no natives of N. A.; no 

 species of this division has hitherto been noticed there. The Try- 

 petina, on the contrary, are represented there by numerous, partly 

 very handsome species, all belonging to the genus TRYPETA in 

 Meigen's and Wiedemann's sense. 



FAM. XLY. LONCHAEIDAE. 



Charact. Neuration complete ; the auxiliary vein runs to the border of 

 the wing in the usual way, under an acute angle and without be- 

 coming obsolete, and is very near to the first longitudinal vein ; 

 this vein is bare ; the two posterior basal cells are small. Front at 

 each side with a single row of bristles ; border of the mouth with- 

 out vibrissae ; clypeus rudimentary. Middle tibia? with spurs ; all 

 tibiae without erect bristle on the exterior side before the tip. The 

 ovipositor of the female consists of three joints and is rather horny, 

 quite flattened, and ends in a simple point. 



They are divided into the PALLOPTERINA having more slender 

 legs and a broader front, and the LONCH^INA with stouter legs 

 and a more narrow front. 



There is only one species in N. A., that I know of, belonging 

 to the genus PALLOPTERA : of the second division I have several 

 species of LONCH^A, a part of which seem to be identical with 

 European species. 



FAM. XL VI. SAPROMYZIDAE. 



Charact. Neuration complete ; auxiliary vein of the usual structure, fre- 

 quently very much approximated to the first longitudinal vein ; 

 costa of the wings without bristles or marginal spine ; longitudinal 

 veins without peculiar hairs ; posterior basal cells small. Front 

 with a single row of bristles on each side ; no vibrissaa on the border 

 of the mouth ; clypeus rather rudimentary. Only the middle tibiae 

 have terminal spurs ; all tibise with a small erect bristle on the 

 exterior side before the end. Ovipositor of the female not horny. 



N". A. has numerous species of the genera SAPROMYZA and 

 LAUXANIA, and a few species belonging to PACHYCERINA Macq., 

 a genus detached from Lauxania. 



