Not having illustrated Meigen's extensive subfamily Antho- 

 myia, I have selected a group, the males of which are more 

 remarkable for the conformation of their legs than any others 

 I remember, excepting the Medeteri, pi. 162: this curious 

 structure is supposed to afford them the means of catching 

 the females, as well as of adhering to aquatic plants, which 

 they inhabit. By these characters Hydrotcea is separated 

 from neighbouring groups ; and the pubescent antennae will 

 assist in distinguishing the females, as they are more plumose 

 in the allied genera, into which the Anthomyzidae are now 

 divided. 



I have not succeeded in finding the tongue, but I have to 

 remark that the eyes are pubescent only in the male of the 

 species figured. Macquart has {proposed the following sec- 

 tions : the numbers 105, &c. refer to the Guide and to Meigen. 



1. Anterior thighs spined in the males; xvith their tibice 

 crejiated or notched. 



* Anterior thighs with only 1 spine in the males. 

 105. dentipes Fah. — Meig. 5. 144. — domitor Harr. Expo, 

 pi. VS./. 71. 



94. militaris Meig. 136. July, Turk Mountain, Ireland. 

 98. armipes Fall. — Meig. 138. June, Darent. 



90. occulta Wied. — Meig. 133. Taken by Mr. Haliday : it 

 forms a portion of Meigen's genus Lasiops, a name alluding 

 to the hairy eyes, distinguished from Jricia by the fine pu- 

 bescent seta of the antennae and longish abdomen, and from 

 Hylomyia by the hairy eyes. 



126. glabricula jpa//. — Meig. 155. — siructusHarr.Expo.pl. 

 43./. 68? 

 93. palsestrica Meig. 135. 



** Anterior thighs with 2 spines. 

 96. meteorica Linn. — Panz. 1. 19. — Vaccarum De G. 6. 

 ;;/.5./.l. 



This insect flies in troops in July, tormenting horses, cows, 

 and even man, by flying round their heads, and endeavouring 

 to alight on the eyes, nose, and mouth, to obtain the secretions 

 from those parts. 



91. irritans Fall. — Meig. 134. July, Killarney. 



92. bidens Wied. — Meig. ] 35. 



134. ciliata Fab. — Curt. B.E.pl. 768. J^.— spinipes Fall. 

 The females I have taken in May in Coomb-wood. 



2. Blainvillia Desv. Thighs unarmed in the males, anterior 

 tibia crenated. Anten7ia plumose in the male, almost naked 

 in the female. 



10. palpata Desv.—Macq. 2. SOI. — Meig. 7. 326. 

 This species is added to illustrate the section, but I believe 



it has not been found in England. 



Centuncidus minimum. Bastard Pimpernel, was communicated 

 bv Dr. Bromfield and Mr. Luxford. 



