324 Mr. J, E. Collin's Contrihution totmrds knowledge of 



9. Hy. dorsalis Stein, Arch. f. Nat. Ixxxi, 160 (191G). 

 (Plate VIII, fig. 4.) 



A very distinct little dove-giey species. There is little to add 

 to Stein's description except that the middle femora posteroventrally 

 bear numerous fine bristly hairs in the place of the single row of 

 distinct bristles in allied species. 



Length 4-4*5 mm. 



H. dorsalis was found on the Col. du Lautaret (Hautes 

 Alpes) by Dr. Villeneuve, and is also known from Italy. 



Hyiephila sp !— ? inflata Rondani, Dipt. Ital. Prodr. vi, 235 

 (1877). 



Through the kindness of Dr. Villeneuve, it has been 

 possible to examine the unique female specimen which 

 he considers may be the true inflata of Eondani. It 

 was caught in tlae neighbourhood of Rambouillet while 

 in the act of entering the burrow of a Hymenopteron. 

 The absence of any bristle beneath the middle tibiae, 

 the short though distinct pre-alar bristle and the wide 

 frons, make it comparable with only H. sponsa Mg. It very 

 closely resembles that species, and, so far as can be judged 

 from a single specimen, only differs in having the postical 

 cross-vein much straighter and only very slightly oblique. 

 The width of frons compared with width of head is as 

 25-5 : 100 — almost exactly the same as in H. sponsa. 



South American species. 



The only species which has been studied is H. andicola, 

 Bigot, Ann. Soc. Ent. Fr. (6) iv, 300 (1884). The two 

 specimens from Chile constituting the types belong to two 

 distinct species. The specimen Bigot mistook for a male 

 is a typical female Hyiephila, and for this specimen the 

 name of andicola must be retained. The other specimen 

 is a female Hamntomyia with subplumose arista, two pairs 

 of true orbital bristles pointing forwards, all the tibiae 

 yellowish, middle tibiae with a very small antero ventral 

 bristle, pre-alar bristle absent, abdomen somewhat com- 

 pressed towards tip and very truncate, wings with postical 

 cross-vein much straighter. 



