184 Tachinidae. 



of about equal length. Penis rather swoln apically, with a large 

 lobe, the end not bent forwards, going out in a short spine and strongly 



roundly dilated above it, especially on post- 

 erior side; no ventral apophyses. Posterior legs 

 not fringed; middle femora without comb; 

 hind femora with long anteroventral bristles. 

 Wings with costal segment 3 and 5 equal; 

 subcostal vein bare; a costal spine present. 

 Female. I do not know the female and 

 at present it can scarcely be distinguished 

 from the allied species. 

 Length 5 — 8 mm. 



S. nigriventris seems to be rare in Den- 

 Fig. 48. S. nigriventris. mark, I know it only from Sønderborg, 

 taken in July and August (Wiistnei). 

 Geographical distribution: — Europe, but not known north of 

 Denmark. It has been bred in France from Helix cantianiformis. 



11. S. incisilobata Pand. 



1896. Pand. Rev. Entom. XV, 197, 44. — 1907. Villen. Ann. Soc. Ent. 

 de Fr. LXXVI, 396. — S. striata Meig. (nec Fabr.) 1826. Syst. Beschr. V, 21, 7. 



— 1907. Kat. palåarkt. Dipt. III, 491. — 1911. Kram. Abhandl. Nat. Geseli. 

 Gorlitz, 27, 31, Tab. II, Fig. 2. — 1912. Bottch. Deutsch. Ent. Zeitschr. 724, 

 Fig. 20. — 1924. Stein, Arch. f. Naturgesch. 90, 6, 196. — S. atropos 1862. 

 Schin. F. A. I, 596, p. p. — 1905. Kram. Zeitschr. Hymn. Dipt. V, 14, Fig. 4. 



— S. privigna Pand. (nec Rond.) 1896. 1. c. XV, 197, 43. — 1907. Villen. 1. c. 

 LXXVI, 396. 



Male. Frons about half as broad as the eye; orbits about half 

 as broad as the frontal stripe, together with the face white, some- 

 what silvery with dark reflections. Frontal stripe black. No outer 

 vertical bristles; bristles on cheeks long and somewhat strong, in 

 one row. Jowls black-haired. Occiput grey, with black hairs and 

 whitish hairs centrally and below. Antennæ with third joint not 

 double as long as second, reaching a little below lower end of the 

 eye. Palpi black. Thorax grey pruinose, the black stripes as broad 

 as the interstices; three postsutural dorsocentrals; a pair of præ- 

 scutellar acrostichals. Scutellum with apical bristles. Abdomen grey 

 or whitish grey pruinose, dark tessellated; third segment without 

 (rarely with small) marginal bristles. Fourth sternite with short 

 decumbent hairs, but long hairs at apical margin. Fifth sternite 

 w^ith the excision roundish, the lamellæ broad at end, with a brush. 



