32 Ortliorrhapha brachycera. 



bearing at the apex the two last joints which form a soniewhat long, 

 distinctly two-jointed style the first joint of which is short, the other 

 long, terminating in a small bristly part. The eyes have the facets 

 in front, on a small space in the middle up to the margin, con- 

 siderably larger than the others. On the posterior side of the head 



Fig. 13. Antennæ of L. hrevirostris. X 40. 



below the occipital foramen there is a membranous part with the 

 united stipites of the maxillæ. Glypeus is distinctly marked off in the 

 middle of the epistoma below, it is rounded upwards and strongly 

 impressed. Proboscis is short, about half as long as the head is high ; 

 it is directed obliquely downwards and forwards; the basal part 

 of labium not as long as the apical; labium truncate at the apex 

 and here faintly hairy; labrum short, as long as the basal part of 

 labium; the maxillæ are truncate at the apex and curved distinctly 

 downwards, the maxillary palpi are short, two-jointed with a small, 

 upwardly bent apical joint; hypopharynx pointed, beset with erect 

 hairs over somewhat more than the apical half. Maxillæ and hypo- 

 pharynx are about the length of the labium. Thorax is rectangular, 

 high and distinctly arched above; there are no bristles on the disc 

 but it is clothed with more or less long, somewhat woolly hairs. 

 Scutellum without bristles. On the metapleura there are long, hke- 

 wise woolly hairs; hypopleura without long hairs. Methathorax is 

 distinct, there is a large metasternum, the space between it and the 

 hind coxæ is membranous. Abdomen consists of eight segments; the 

 first dorsal segment is rather long, longer than in the preceding genera 

 and only somewhat shorter than the second ; the first ventral segment 

 is short; in the male the seventh segment is small and the eighth is 

 quite hidden, forming a small annulus at the base of the genitalia. 

 The male genitalia are rather small; they consist of the upper for- 

 ceps with short and thick arms which seem to be united at the base; 

 between the somewhat diverging apices there are two small lamellæ, 

 answering to the median dorsal lamella; below the upper forceps are 

 the lower forceps the arms of which are thick at the base, they are 

 as usual two-branched at the apex and very complicated ; at the base 

 of the lower forceps there is a roundly triangular median ventral 

 lamella. In the female the fifth abdominal segment is somewhat 



