308 Orthoirhapha brachycera. 



at Charlottenlund on ^^/e 1847 (Stæger), and one in Jutland at Sæby 

 in August 1881 (H. J. Hansen). 



Geogmphical distribution:— Northern and niiddle Europe down 

 into Germany and Styria; towards the north to niiddle Sweden. 



20. ThjpyptiCUS Gerst. 



Species of small or very small size, and of bright metallic colour. 

 Head about of the breadth of thorax, semiglobular. Vertex somewhat 

 exeavated ; the ocelli very distant from each other ; frons decreasing 

 in breadth towards the antennæ. There are a pair of ocellar and of 

 outer vertical bristles, and a pair of small postvertical bristles. The 

 eyes are short-hairy, almost microscopically; they are separated in 

 both sexes, most broadly in the female. The postocular bristles seem 

 to form a single row. Antennæ inserted near to each other, a little 

 above the niiddle; they are short, equally shaped in both sexes; the 

 third joint somewhat roundish, with an apical arista, the first joint 

 of which is very short; the first antennal joint is, as far as I could 

 see, bare above, the second has small bristles at the apex, the third 

 and the arista are very short- or almost microscopically haired. The 

 epistoma is separated from clypeus by a small, transverse keel; the 

 clypeus is rather high, reaching almost half way up to the antennæ; 

 it does not reach the lower margin of the eyes. Proboscis a little 

 stronger in the female than in the male, very slightly, almost not 

 protruding, but I have otherwise not been able to examine the mouth 

 parts. Thorax almost quadratic, high and a little arched above; 

 acrostichal bristles biserial; there are five long dorsocentral bristles, 

 longest behind; as far as my material allowed nie to see there are 

 further a humeral, two notopleural, a præsutural, two supraalar and 

 a postalar bristle; the front part of the disc has somewhat dense, 

 short hairs. ^ Scutellum with two long marginal bristles. Bristles on 

 propleura small. Abdomen somewhat short, conical, compressed to- 

 wards the end; the first segment as usual somewhat short; in the 

 male the foUowing segments of about equal length, the sixth a little 

 smaller, the seventh small and hidden; the hypopygium is long and 

 somewhat slender; it is laid up under the venter and exposed, but 

 not pedunculated ; with regard to its construction I can say nothing 

 definite, but it seems to me to answer well to the description by 



1 Gerståcker says (Stett. ent. Zeitg. XXV, 18H4, 43) in the description of the 

 genus that the thoracic disc has no longer bristles; no doubt these have been 

 broken off, as Loew suggested (Beschr. eur. Dipt. I, 1869, 304. Nota). 



