Stratiomyiidae. 23 



2. Nemotelus Geoffr. 



Species of rather small size, quite black or often black with more 

 or less, often greatly extended white spots; the colouring is often 

 different in the two sexes. Head roundish but the face more or less 

 produced to a somewhat pointed snout on the upper side of which 

 the antennæ are inserted. Yowls liorizontal, not descending below 

 the eyes ; the mouth aperture forming a long, backwardly widened 

 split, stretching to the end of the snoiit. Antennæ short, eight-jointed, 

 joints three to six forming an annulated part, the two last joints for- 

 ming a thin style. Eyes generally bare, rarely hairy, touching in the 

 male, separated in the female; In the male the facets on the lower 

 part are smaller than above. The oral cone is long and the clypeus 

 on the front side of it long and narrow, hence the proboscis may be 

 long and protruding; the basal part of the labium is short, but the 

 labella are long and narrow, chitinised on their basal half; they are 

 not cleft for their whole length, but only in the apical part. The 

 labella differ somewhat in length in the different species, in N. pan- 

 therinus they are long, in ulighiostis somewhat shorter, and in mgrhms 

 still shorter, finally in notatus they are relatively short and broad. 

 When the oral cone is retracted, the clypeus is laid backwards and 

 retracted in the oral ap erture, and kinks are then formed between 

 the oral cone and the labium and between the basal part of labium 

 and the labella, the latter then covering the oral aperture; also when 

 the oral cone and proboscis are protruded, the labella are generally 

 forming an angle with the basal part of the labium, the proboscis is 

 then often described as kneeformed. Labrum and hypopharynx are 

 short, no maxillæ are seen, but there are small one-jointed maxillary 

 palpi. Thorax is longer than broad, sculellum without spines. Abdomen 

 is broader than thorax, consisting of six segments, but the last is short 

 and often more or less hidden under the foregoing one, especially in 

 the male. The genitalia of the male are somewhat complicated with 

 a median apparatus and more or less claw-shaped lateral pieces, and 

 they seem to vary a good deal according to the species. Wings with 

 the radial vein indistinct or wanting, the cubital vein forked or, in 

 one species {nigrinus), unforked, from the discai cell rise four thin and 

 pale veins, the fourth is the anterior branch of the postical vein ; there 

 are thus tive posterior cells; no cross-vein is found between the discai 

 cell and the postical vein. In rest the wings are lying parallel over 

 the abdomen, one covering the other. 



The larvæ are elongated, slightly flattened; the body consists of 

 twelve segments in all. The head is longish, on each side, in the middle, 

 there is a distinct eye, and somewhat in front of it a small two-jointed 



