ENTOMOLOGY DIPTERA. 383 



Wahlberg (Ofvers. Akad. Forh. p. 107) : Paramesia tenella, Rhamphomyia 

 paradoxa, modesta, poplitea ; and of TACHYDROMI/E, from the same country, 

 Tacfiydromia.afra, Walilb. (Ib. 100.) 



LEPTIDES. Loew (Eut. Zeit. 123, pi. 2, f. 1-5) has characterized a new 

 genus Baryphora. B. sjjeclosa-, new species, from Rhodes and the eastern 

 isles of the jEgeau. The genus is intermediate between Atherix and Thc- 

 reva. It is slender, with a prominent forehead, the proboscis projecting 

 and recurved, the feelers very thick, three-jointed, the first joint enlarged, 

 oval, the second very small, the third conical, without a style at the end. 

 No notice is taken of the frogs (pulvilli) between the claws, which would 

 decide which it is allied most nearly to, Thereva or Atherix. The habit is 

 more like Atherix. The insect runs about on arbutus bushes, in the 

 shade or early in the morning, quivering its wings and arching the abdomen. 



SCENOPINII. Zetterstedt (Dipt. Scaud. iii, 897) describes a new species, 

 Scenopinmfurcinenis, from a specimen ( ), taken at Lund on a window, 

 which has the third main vein of the wing doubly forked. 



DOLICHOPID^E. Macquart (Ann. Soc. Eut. Era. ii, 177, pi. 4, 5) has 

 taken in hand to examine the sexual distinctions in the veiuiug of the wings, 

 and has figured the wings of a great number of species of Dolichopus, in 

 which these differences are very constant. They are as follows : 1 . At the 

 end of the mediastinal veins, which unite about the middle of their course, 

 there is in the male a black callous dot, which is indistinct or wanting in 

 the female. 2. The principal cross vein in $ usually approaches the end of 

 the wing more than in ? ; 3. Consequently the portion of the externo- 

 median vein, from the connecting vein to the curve or angle, is shorter in 

 the former sex. 4. The curve or angle of the same is usually bolder in the 

 . It is only in Dolichopus that these distinctions could be verified, as the 

 like were not to be traced in the other genera. 



Wahlberg has given particulars of the habits of the Dolichopidse observed 

 by liim on the western coast of Sweden. After a storm he saw the sand, 

 left bare by the sea retiring, covered with swarms of Diptera, mostly Doli- 

 chopidfe of different kinds, which were making their prey of a small species 

 of Nais that had been thrown up in quantities. Among these Dolichopida?, 

 Rhaphium flavipalpe, Zett., occurred, the male of which is here determined 

 for the first time. Eor this species he proposes a new genus, Thmophilus, 

 not unlike a Cordylura in appearance, combining in one the essential cha- 

 racters of the principal types in the family, the head and palps of Rhaphium, 

 the wing-veins of Hydrophorus, the feelers of Dolichopus, and the sexual 

 organs of Ammobates.* A second species of this genus is Rhaphium macu- 



* A genus formed by Staunius (Isis, 1331), for Dolichopus plumipes, Fal- 

 len, &c. ; but the name was preoccupied among the Hymenoptera. TR. 



