Aphiochaeta. 251 



were females, evidently present for depositing eggs. Schmitz (Biol. 

 Zentralbl. 37, 1917, 31) thinks that the species may deposite exclusively 

 on snails, but it evidently uses also other piitrid animal matter. 



Geographical distribution: — Eiirope and down into the Cana- 

 rian Islands and Madeira, towards the north to northern Sweden; 

 it also occiirs in North America. 



Remarks: The Danish specimen mentioned by Zetterstedt 1. c. 

 is Parastenophora minuta Fabr. as stated above under that species. 

 — Trineura carhonaria Zett. is not, as said by Becker, ruficornis^ 

 but is = sordida Zett. and = scaiira Schmitz (see remarks below 

 under Woodi). 



16. A. errata Wood. 



1912. Wood. Ent. Month. Mag. 2, XXIII, 98. - 1914. Brues, Bull. 

 Wisc. Nat. Hist. Soc. XII, 117. — 1918. Schmitz, Jaarb. Natuurh. Genootsch. 

 Limburg 1917, 142. - Phora cilipes Wood (nec Brues) 1909. 1. c. 2, XX, 120, 

 148, (J nec $. — Afhiochaeta decipiens Wood (nec de Meijere) 1912. 1. c. 2, XXIII, 

 169. 



Male. Again this species is very similar to the two preceding, 

 especially to riificornis. Frons as in the others, grey; supraantennal 

 bristles not strongly approximate, the lower much smaller than the 



Fig. 82. Wing of A. errata <S ■ 



upper or nearly minute. Antennæ somewhat large, reddish to black. 

 Pal pi yellow, ordinary. Thorax reddish to black, an intraalar bristle 

 present as in the other two. Scutellum with only two bristles, the 

 anterior bristles only present as small hairs. Pleura reddish or more 

 or less blackish. Abdomen black, somewhat greyish, haired as in the 

 other two, but the bristles on the sides of second segment smaller 

 and fewer, generally not above five in number. Venter with no hairs 

 visible. Hypopygium small, shining at the sides below and here with 

 a small hair; anal tube large as in the others, yellow or dusky yellow; 

 there is a triangularly pointed, yellowish ventral plate. Legs coloured 



