382 REPORT ON ZOOLOGY, MDCCCXLIV. 



Cecidomyia by the shortness of the first vein, which terminates before the 

 tip of the wing, and by the (apparent) number of joints in the feelers, and 

 distinguished from each other by variations of the latter. 3. Porricondyla; 

 and 4. Phytophaga, separated from Cecidomyia only by the second of these 

 characters. 5. Ozirrhynchiis, remarkable in having the mouth drawn out 

 into a perpendicular pointed beak, one species, longicollis, new. Of the Les- 

 tremini 1. Micromyia (lucorum, new species), 2. Neurolyga (fenestralis, 

 new species, and sylcalis, new species ) ; with wings like Campylomyza, but 

 with three eyelets, the former having" ten joints to the feelers, the latter 

 fifteen in , 12 in $ ; 3. Mimosciara, allied to Lestremia, but- with two 

 eyelets, and with twelve joints in the feelers of ; two species, both new, 

 M. molobrina and lestremina, R,.] 



Ratzeburg (Forstius. iii, 159) has treated of the Cecidomyice of timber 

 trees, C. pinl, Degeer, bracht/ntera, Schwiig., and faff/, Hart. The last of 

 these corresponds to Cynips fagi, L., of which Linnaeus knew nothing more 

 than the pointed conical galls produced by it on the leaves of the beech. 

 Hartig, who first ascertained the true inmate of these, has made known also 

 a second species of the beech, C. annulipes, which produces smaller, 

 blunter, softer galls, covered with brown hairs. Both kinds of galls are 

 figured. 



Sciarasubterranea, Mark. (Germ. Zeitschr. v. 266), is an inseparable com- 

 panion of Formica rufa, in the nests of which it occurs from the early spring 

 to the end of autumn. It not only passes through the grub state there, but 

 the fly also lives in the nests of the ants, where the author often found them 

 paired. 



Walberg (Ofvers. K. Vet. Akad. Forh. 1844, p. 110) describes a new 

 Sim/ilia from Lapland, S.ferruginea, 2'", $ 3'" long, therefore the largest 

 of the genus, and further remarkable for this, that it seems to have no appe- 

 tite for blood. 



[Curtis (Gard. Chron. 868) has figured the earlier states of Diloplnis 

 febrilis. The larva, found in numbers in garden-mould, resembles that of a 

 Bibio, but the rows of prickles are wanting. The last segment and the fore- 

 going have each four projecting teeth.] 



ASILICI. Loew (Ent. Zeit. 165, pi. 2, f. 22-25) has characterized a new 

 genus Anarolim, related to Dasypogon, but differing in the want of the 

 frogs (pxilvilli) between the elaws. In this respect it agrees with the genus 

 Acncphalum, Macq., which has, however, the abdomen broad as in a stout 

 Laphria, while in the present genus it is compressed as in Asilus. /4. Um- 

 latus, new species, from Asia Minor. 



Dioctria hercynia, a new species, from the Lower Harz, is also described by 

 Loew. (Ibid. 381). 



EMPIDES. The following new species from Lapland are described by 



