1896.] 203 



dark markings ; from thence to the anal the border recedes opposite the end of the 

 subcosta in a slight curve, and on meeting the nervure follows it to the hind margin. 

 Season, May to October. 



Worn and faded specimens are quaint objects of a very dissipated 

 aspect, and through abrasions of portions of the whitish hairs that 

 terminate the rows of bristling hair, the confluence of the dark wing- 

 markings is liable to appear more extensive than is stated above. The 

 white space or fascia preceding the median dark fascia resembles in 

 some specimens a rounded basal blotch ocellated by dark hairs at the 

 end of the anterior basal cell. Zetterstedt's " var. b " may have been 

 only the male of the species, or possibly a specimen the worst for 

 wear. Walker mentions as characteristic of P. ocellaris, " a clavate 

 appendage of the head, hid in a tuft of hair behind each eye," which 

 is erroneus, for no such appendage exists. His cabinet in the British 

 (Natural History) Museum seems to reveal the probable source of 

 bis mis-statement, although there is no record of the date or origin of 

 bis specimens. Psychoda ocellaris is there represented by nine ex- 

 amples in three rows — 2 J" Pericoma notalilis, 1 ^ and three ? P. 

 ocellaris, 1 ? pinned and 2 ex. carded, P. ocellaris. Then follow, under 

 a different MS. name, 2 ^ P. ocellaris. Immediately preceding the 

 nine first mentioned exemplars of P. ocellaris stand three rows of 

 four specimens each, named Psychoda palustris : in the last row the 

 first specimen and the fourth are respectively ($ and ? P. notahilis ; 

 the other ten specimens out of the dozen comprise 2 ^ and 4 ? TJlo- 

 myia fuliginosa, and 1 ^ with 2 or 3 ? P. nuhila. This makes it 

 probable that the two P. notahilis heading the series of ocellaris were 

 really intended for the following MS. label in place of the two P. 

 ocellaris, and vice versa ; and that, through the accidental transposition 

 of the specimens, Walker misattributed to P. ocellaris the thoracic 

 air-nipples of P. notalilis ^ , which were mistaken by him for ap- 

 pendages of the head. 



\i 17. Peeicoma Dalii, Etn. 



P. Dalii, ante, 2nd ser., vol. iv, 125, and vol. v, pi. ii, P. 17 

 (neuration) . 



The dotted lines in the figure cited, and the limits of the bristling 

 hair on wing-nervures in this species, tabulated above, are based upon 

 the Algerian species No. VII, which has not yet been compared with 

 Mr. Dale's insect. 



Psychoda superba. Banks, "The Canadian Entomologist," xivi, 

 332 (1894), appears from the description to have the facies of a 



