Anthomyid genera Hammomyia and Hylephila. 321 



another male in the Collection at Stockholm which is 

 certainly this species. 



H. unistriata was present in Kowarz's Collection (8 

 males labelled " Waldegg " and one male labelled " Asch 

 1884 "), all included by Kowarz under the name unilineata 

 Zett. The single female, which is without doubt con- 

 specific with the males, was given to the late Mr. Verrall 

 by Kowarz in 1882 as a female of H. huccata and bears 

 no locahty label. 



The male genitalia agree with the figures of H. unilineata 

 Zett. given by Schnabl and Dziedzicki, while the true 

 unilineata appears to have been unknown to them. Stein 

 almost certainly included H. unistriata under his description 

 of H. inflata Rdi. It cannot, however, be Eondani's species 

 because that has the eyes in the female separated by a 

 space almost a third the width of the head (as, for instance, 

 in sponsa Meig.). 



6. Hy. brevifrons Stein, Arch. f. Nat. Ixxxi, 159 (191G). 

 (Plate IX, fig. 8.) 



A species very closely allied to buccata and best distinguished 

 •by the characters given in the Table of Species. In addition the 

 eyes are rather smaller than in buccata, more rounded, and slightly 

 more separated on the frons. The silvery jowls distinctly deeper. 

 Wings with the last two sections of discal vein usually less unequal 

 in length. Abdominal sternites distinctly less bristly in the male. 



Length 5 mm. 



H. brevifrons is at present known from only the Col. du 

 Lautaret (Hautes Alpes), where Dr. Villeneuve found it 

 in some numbers in July 1908. 



7. Hy. buccata Fallen, Dipt. Suec. Muse. 65 (1824). 



(Plate IX, fig. 9.) 



cj. Head with much shorter bristles than any other British 

 species. Vibrissae and bristly haks on jowls especially short. 

 Only a single row of bristly hairs on front half of oral margin and 

 no long upcurved bristles. Arista more distinctly pubescent. 

 Thorax without or with a very indistinct central brown stripe. 

 Pubescence, as distinct from bristles, very short and scanty especially 

 in female. Prosternal plate between front coxae with a pair of 

 distinct bristles, one on each side margin. Abdomen without 

 distinct tessellations and with a very narrow central stripe, only 

 TRANS. ENT. SOC. LOND. 1920. — PARTS III, IV, V. (APR. '21) Y 



