Lucilia. 145 



as if its development is bound to Biijo and, as it seems, also to Rana, 

 and perhaps other toads. 



Geographical distribution: — Europe down into France; hitherto 

 not known north of Denmark. 



Remarks : L. bujonivora has generally been considered as identical 

 with silvarum, and so also in Kat. palåarkt. Dipt., but in 1914 Ville- 

 neuve 1. c. pointed out that the two species are different. Besides 

 by the characters in the genitalia Villeneuve also says that hufonivora 

 further differs by only two postsutural acrostichals; this latter char- 

 acter is also generally but, however, not always quite valid, as a 

 couple of my specimens show three postsutural acrostichals, and 

 one specimen has three on one side, two on the other. 



The genus Bujolucilia Towns. 1919 for hufonivora and silvariim 

 I fmd quite unjustifiable. 



3. L. sericata Meig. 



1826. Meig. Syst. Beschr. V, 53, 3 (Musca). — 1838. Zett. Ins. Lapp. 655, 

 10 (Musca) et 1845. Dipt. Scand. IV, 1314, 3. — 1862. Schin. F. A. I, 590. — 

 1896. Pand. Rev. Entom. XV, 219, 16 (Calliphora). — 1907. Kat. palåarkt. 

 Dipt. III, 539. — 1911. Kram. Abhandl. Nat. Gesell. Gorlitz, 27, 42, Tab. III, 

 Fig. 8. — 1924. Stein, Arch. f. Naturgesch. 90, 6, 263, 5. — Musca nobilis Meig. 

 1826. 1. c. V, 56, 12. — 1862. Schin. F. A. I, 590. — L. fulgida Zett. 1845. 1. c. 

 IV, 1315, 4. — L. latifrons Schin. 1862. F. A. I, 590. 



Male. Frons above of some breadth, about one fifth of the breadth 

 of the eye; the frontal stripe broader than the orbits. Orbits blackish 

 above, the face for the rest whitish, silvery; frontal stripe black or 

 brownish black. Orbits with distinct hairs; 

 jowls black-haired. Occiput greenish black, 

 silvery along the eye-margin, with all 

 black hairs. Antennæ as in silvarum. 

 Palpi yellow to brownish. Thorax slightly 

 whitish pruinose just in front; three post- 

 sutural acrostichals. Abdomen with third 

 segment without marginal bristles. For- 

 ceps somewhat short, upper forceps elong- 

 ated triangular, attenuating outwards, 

 only cleft in apical part; arms of lower 

 forceps broad, almost ovate, generally 

 with a somewhat straight dorsal and a pjg ^l. L. sericata, forceps 

 convex ventral margin; the arms curved in profile. 



10 



