BY FREDERICK A. A. SKUSE. 45 



Catocha, Hal. — The upper branch of the fork forms a single 

 smooth curve ; ^ antenna3 16-jointecl, verticillate, joints pedicelled ; 

 9 antemise 10-jointed, pilose, joints moniliform. 



CAMPYLOMYZA,Meig. — Fourth longitudinal vein forked; antennae 

 11-20-jointed ; ^ moniliform, pilose; joints pedicelled; ^ ^^^^^' 

 moniliform, joints sessile, pubescent. 



II. Ocelli wanting ; third longitudinal vein forked ; tirst longi- 

 tudinal vein very short ; wings pubescent ; antennae ^ moniliform^ 

 verticillate ; ^ submoniliform, pubescent. 



Lestremia, Macq. — Antennse 16-jointed. 



Cecidogona, Loew. Antenna; 11-jointed. 



Both authors regarded this classification of the section Anaretina 

 as very imperfect, and indeed these insects were only considered 

 provisionally as a section of the Cecidomyidai, so little was known 

 about them. 



Winnertz in 1867 (Beit, zu einer Mon. der Sciarinen) includes 

 Zygoneura amongst the genera of his new group, most of which 

 were previously embodied in Mycetophilidfe. The characters of 

 Zygoneura almost agree with those of Sciara, and the venation of 

 the wings shows a decided relationship. 



Whether I am right or wrong in accepting the genus Ceci- 

 dogona it Ls not easy for me to decide ; for although Prof. Loew 

 (Stett. E.Z. 1844, p. 324) declares it to be without ocelli, Dr. 

 Schiner seems to regard it as synonymous with Lestremia, and so 

 also evidently does Winnertz (V. z-b. G, 1870, p. 35) ; and as if 

 to further obscure the truth, Baron O.-Sacken places both genera 

 in one division, characterised " ocelli wanting," notwithstanding 

 Prof. Loew in the introductory portion of tlie same volume states 

 that in all the genera in his section Anakktina, with the single 

 exce[jtion of Cecidogona, thci-e ai-e distinct ocelli. If Cecidogona 

 does not possess ocelli, and it is dillicult to believe, if these did 

 exist, that tlioy could havo escaped the obsfrvatiou of Prof. Ixxnv, 

 then that genus is certainly valid, and distinct from Lestremia^ 

 which is wanting in ocelli ; therefore 1 cannot fee;! justified in 



