Linnaemyia. 411 



male, rather protruding conically. Clieeks broad and jowls nearly 

 as broad as the heiglit of the eye. In both sexes ocellar, inner and 

 outer vertical and two orbital bristles, Postocellar and occipital 

 bristles distinct. Behind postocular bristles no black hairs. Frontal 

 bristles descending to aboiit end of second antennal joint, the upper- 

 most reclinate and in female an outwards directed bristle behind it. 

 Cheeks with short, fine hairs. Vibrissæ not ascending. Eyes hairy, 

 Epistoma a little retreating, reflected and prominent below. Oral 

 cone and proboscis of aboiit eqiial length; clypeus deeply cleft, for- 

 ceps-shaped; palpi quite small and rudimentary; labium thin, of 

 some length, labella oval. Antennæ inserted above middle of the 

 eye, nearly reaching end of epistoma, third joint about twice as 

 long as second; arista with second joint elongated. Thorax rectangular; 

 three postsutural dorsocentrals and three præ- and three postsutural 

 acrostichals; a præsutural intraalar bristle, but not large. Sciitellum 

 with four marginal bristles on each side, the apical the smaller, cross- 

 ing; a pair of discai bristles. Three sternopleural bristles. Above on 

 pteropleura a single long bristle. Abdomen elongated oval, excavation 

 on second segment reaching hind margin ; there are discai and marginal 

 bristles, on second segment none; fifth segment with bristles on most 

 part. Fifth sternite in male cleft about to base. Male genitalia knob- 

 like; hypopygium conical behind. Upper forceps attenuated into a 

 beak, arms of lower forceps small, triangular. Legs somewhat slender; 

 claws and pulvilli in male a little elongated; in female three last 

 joints of front tarsi dilated. Wings with firsb posterior cell open, 

 ending well before apex of wing; discai angle rectangular, with a 

 distinct veinlet; no costal spine. 



The species are parasitic on Heterocera and belong to Pantel's 

 group 4. 



Of the genus 3 palæarctic species are known, one occurs in 

 Denmark. 



1. L. comta Fall. 



1810. Fall. Vet. Acad. Handl. XXXI, 284 et 1820. Dipt. Suec. Muse. 

 24, 48 (Tachina). — 1844. Zett. Dipt. Scand. III, 1094, 91 et 1859. XIII, 6096, 

 91 {Tachina). — 1895. Pand. Eev. Entom. XIV, 348, 2. — 1907. Kat. palåarkt. 

 Dipt. III, 203. — 1921. Baer, Zeitschr. f. angew. Ent. VII, 131. — Tachina 

 compta 1824. Meig. Syst. Beschr. IV, 262, 39 et 1838. VII, 218, 7 (Micropalpus). 

 — 1889. B. B. Denkschr. Akad. Wiss. Wien, LVI, 133 {Micropalpus). — 1924. 

 Stein, Arcli. f. Naturgesch. 90, 6, 48. — Tachina diadema Meig. 1824. 1. c. IV, 

 332, 160 et 1838. VII, 255, 6 (Exorista). — 1862. Schin. F. A. I, 466 {Exorista). 



