FUNDUS GNATS OF NORTH AMERICA. 32I 



Addenda. 



Dr. H. Dziedzicki of \\'arsaw, Russia, recently informed me 

 that the hypopygium of Platyura diJiita Lw. is identical with 

 that of P. imicolor Winn., and that of P. subtcrminalis is like 

 that of P. infnscata \\"n^\^^. As the last two also resemble each 

 other in other particulars they may be identical. Platyura parva 

 belongs to Enderlein's new genus Paraplatyura, R2+3 ending in 

 Ri. 



Prof. T. D. A. Cockerell called my attention to an error in Part 

 II (p. 131). Tetragoiicura pcrittila should have been recorded 

 from near Ritle, Colorado, an Eocene locality. 



On page 136 in the description the hypopygium oi-S. galhana 

 for infcr'or read superior, for dorsal read ventral, and vice 

 versa. Similar corrections must be made under explanation of 

 figure 122, page 192. For glabana read galbana. (Part II). 



In the tables of leg measures on pages 323-325 the letters 

 ct or t following a name signify that the measurements were 

 made upon the cotype or the type specimen. 



Since the publication of my previous papers on the 

 Mycctophilidae in Bulletins 172 and 180 of this Station and in 

 Genera Insectorum, Fasc. 93 there have appeared two papers 

 by Dr. Enderlein (Trans. Linn. Soc. London, 1910, and Stettin 

 -Ent^Zeit. 191 1) on this family of flies in which some additional 

 genera have been proposed. As some of these genera occur in 

 America it is desirable to give a brief synopsis of each with 

 such differential characters as may be necessary to distingui-h 

 them from the older genera as characterized in the synoptic 

 tables published in th.e previous papers of this series and in 

 Genera Insectorum. 



Mycetobiinac. 

 Mesochria is related to Mycetohia but differs in having con- 

 t'guous eyes, and a coalescence of the tips Ri and R^+.i. Scotella 

 I consider a Sciophiliiie. See below. 



Ceroplatiiiae. 

 Placoceratias differs, from Ccratcliou in possessing but 2 

 ocelli. In Paraplatyura R-^-^-.. en;]s in Ri in this respect differing 

 from Platyura. P. parva from the St. Vincent Isl. should be 

 place:! here. 



