Clare Island Survey — Diptera. 25 27 



C. eilicrura, Rond., to which it bears a very close resemblance, by the 

 following character, which, I believe, has not been hitherto noticed. 

 In C. trichodactyta the two rows of acrostichal bristles are much closer to 

 each other than to the dorso-central row on either side, while the surface 

 of the thorax between the rows is absolutely bare. In C. eilicrura, on the 

 other hand, the two rows of acrostichal bristles are as widely apart (or 

 nearly so) as the distance of each from the dorso-central row, while 

 there are always a few fine and tiny scattered bristles between them. 

 *Anthomyia aestiva Mg. (sulciventris Ztt.) — CI. : (Milne and G.). M.: Mulranny, 

 (G.), Louisburgh (M. and H.) ; Belclare (H.) ; Castlebar Lough, Westport, 

 Lough near Westport, Clogher, and Knappagh (Gr.). 

 A. radicum L. — M. : Mulranny, "Westport, Clogher, Knappagh, and Brackloon 

 Wood (G). 

 *Macrorchis intermedia Fin. — M. : Louisburgh, one $ (H.) ; Belclare, one $ 

 and four 9 (H.) ; Westport, two $ and ten 9 in Demesne, and one 9 

 on riverside (Gr.). 

 *Coenosia geniculata Fin. — CI. : one $ (Gr.). M. : Westport, one $ in 

 Demesne, Castlebar Lough, one <J , and Lough near Westport, one 

 6 (Gr.). 

 C. pumila Fin. — M. : Castlebar Lough, one c? (G). This species has been 

 recorded as British under the name of C. albicomis Mg. 

 *C. sexnotata Mg. — M. : Belclare, two $ (H.) ; Westport, two 9 in 

 Demesne (H.). 

 C. tigrina Fab. — M. : Westport, one 9 ( ? collector) ; one 2 in Demesne, one 

 9 and two $ on riverside (G.) ; Castlebar Lough, one <J and two 9 ; 

 Belclare, one 9 , Clogher, four $ and four 9 , Knappagh, four <£ and 

 two 9 , and Lough near Westport, four <J and one 9 (G.). 

 C. tricolor Ztt. — M. : Achill N.E., one £ (H.). This is the species recorded 

 in British lists as C. infantula Bond. ; but, as Stein has pointed out, the 

 two names are probably synonymous, and Zetterstedt's name has the 

 priority. 

 Schoenomyza litorella Fin. — CI. : one £ (M.) ; four $ and four 9 (G.). 

 M. : Castlebar Lough, three 9 , and Westport, one 9 in Demesne (G.)- 

 Fucellia fucorum Fin. — CI. : six £ and one 9 (G.). M. : Mulranny, 



one S (G.). 

 F. maritima Sal. — CI. : one 9 ( ? collector) ; ten <J and fourteen 9 (G.). 

 M. : Mulranny, three 9 ; Louisburgh, one 9 (M.). Judging from the 

 number of specimens taken, this species appears to be quite as abundant 

 as the previous species, or even, perhaps, more so. 



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