Pseudopachystylum. 519 



slightly ascending. Eyes bare. Antennæ inserted high above middle 

 of the eye, third joint about four times as long as second; second 

 joint with a long bristle on front side; arista with second joint elong- 

 ated, it is pubescent, a little geniculate between second and third 

 joint. Thorax rectangular; three postsutiiral dorsocentrals and two 

 præ- and three postsutiiral acrostichals; no præsutural intraalar 

 bristle. Scutellum with four marginal bristles on each side, the apical 

 Crossing. Three (or four) sternopleural bristles. Pteropieura with a 

 bundle of few long hairs and a bristle above. Abdomen rather elongate; 

 excavation on second segment not by far reaching hind margin; 

 there are discai and marginal bristles, also second segment wdth both 

 kinds. Legs long and slender, especially tarsi which on all pairs are 

 longer than tibiæ, specially long on front legs; anterodorsal bristles 

 on hind tibiæ quite unequal; claws and pulvilli in male elongated; 

 front tarsi in female simple. Wings with first posterior cell narrowly 

 open, ending quite near apex of wing; discai angle rounded; no costal 

 spine. 



The sole species is recorded as bred from a Tenthredinid, Pam- 

 philius vajer. 



Only one species is known, also occurring in Denmark. 



1. P. goniaeoides Zett. 



1838. Zett. Ins. Lapp. 639, 22 et 1844. Dipt. Scand. III, 1066, 60 (Tachifia). 

 — 1893. B. B. Denkschr. Akad. Wiss. Wien, LX, 221. — 1907. Kat. palåarkt. 

 Dipt. III, 357. — 1921. Baer, Zeitschr. f. angew. Ent. VII, 360. — 1924. Stein, 

 Arcli. f. Naturgesch. 90, 6, 116. — T. illustris Meig. 1824. Syst. Beschr. IV, 

 293, 97 et 1838. VII, 190, 27, Tab. LXVIII, Fig. 31— 36. — PacJiystylum 

 Bremii Schin. (nec Macq.) 1862. F. A. I, 440. — 1893. B. B. 1. c. LX, 126. — 

 Pachystylum angulatum B. B. 1889. 1. c. LVI, 101, Tab. IV, Fig. 79. — Pseudo- 

 pachystylum Wachtlii Mik, 1891. Wien. Ent. Zeitg. X, 208. ■ — Peteina stric- 

 ticeps Pand. 1896. Rev. Entom. XV, 99, 1. — 1907. Villen. Ann. Soc. Ent. 

 de Fr. LXXVI, 390. 



Of this species I know only the female. Frons above much broader 

 than the eye, nearly twice as broad. Orbits blackish grey; cheeks 

 bluish grey, somewhat silvery; intermediate triangle red, and like- 

 wise most part of the jowls; frontal stripe velvet brownish black. 

 Orbits with black hairs, continued down on the cheeks in the whole 

 length, and here being long and somewhat bristly, especially along 

 inner eye-margin, and reaching as a single row quite to the lower 

 corner of the eye; jowls besides the oral bristles with only few black 

 hairs. Occiput grey, quite black-haired. Antennæ black; arista 



