344 ERRATA. 



Genus I. OCHTHERA, ii. 249 ; Stnh.* 

 1. mantis, ii. 250 ; Stnh.!; Ztt.; Lw. ; Rdu. 



Genus II. NOTIPHILA, ii. 250 ; Stnh. 



1. riparia, ii. 251. 2 ; Stnh. ; Ztt. Antenna: with the second joint ferruginous ; 

 rays of the arista about fourteen. Abdomen distinctly spotted and freckled with 

 black. 



2. cinerea, ii. 251. 1 ; Stnh. ! ; Ztt. Arista with about ten rays. 



3. uliginosa, ii. 251. 3. tarsata, Stnh. ; Ztt. Arista with about ten rays. 



Genus III. DICH^ETA, ii. IZl.NotipMla p., Stnh. ; Ztt. Keratocera p., Dcsv. 

 1. caudata, ii. 251. 4; Stnh.; Ztt. nigra, Desv. 



Genus IV. DISCOMYZA, ii. 251 ; Stnh. ; Ztt. 



1. incurva, ii. 252. 5 ; Stnh. ; Ztt. 



2. cimiciformis (Curtis, MSS.), Nat. H.Rev. ii. 124 (1855). 



Genus V. TRIMERINA, ii. 1$%. Psilopa S, Stnh.; Zett. 

 1. madizans, ii. 252. 6; Stnh.; Ztt. nigella, Mg. 



Genus VI. PSILOPA (A), Stnh.f Hygrella, ii. 252 Noliphila p., Ztt. 



1. uitidula, ii. 253. 7; Stnh.; Ztt. Var. compta,Mg. 



2. leucostoma, ii. 253. 8; Stnh.; Ztt. eestuans?, L. fn. ii. 1870 (antennis 

 setariis.) 



Genus VII. DISCOCERINA, ii. 253. Clasiopa, Stnh. 



1. obscurella, Fin.; Stnh.; Ztt. nigrina, var. ft. ii. 253. 9. Distinguished 

 by the longer face, which is transversely gibbous in the middle, and inflected below, 

 with a regular row of four stout bristles down each side, the orbit also being very mi- 

 nutely ciliated. 



2. nigrina, Mg. ii. 253. 9. var. 7. cinerella, Stuh. ; Ztt. The variety o (ibid.), 

 with the front above the antcnnfe and the face whitish, the third joint of the anten- 

 nae at the base beneath ferruginous, and the tarsi of a lighter colour, may be a distinct 

 species. It is much rarer than the other form. 



3. pulicaria, ii. 254. 1 1 . -fuscetta, Stnh.; Ztt. 



4. calceata, ii. 253. 10. niyrina, Stnh.; Ztt. Long. Ii; alar. 3 lin. 



5. glabra, ii. 254. 12. Long. 1|; alar. 3 lin. 



Genus VIII. HECAMEDE, ii. 254. Psilopa p., Bohemann. 

 1. albicans, ii. 254. l3.fflodifera, Bohemann, Act. Holm. 204 (1853). 



Genus IX. HYDRELLIA, ii. 254; Stnh. Notiphila p., Ztt. 

 1. laticeps, Stuh.! 229. 26; Ztt. cardamines (major), ii. 255. 1, (dcscr. add.) 



* For the sake of uniformity the subgenera of Haliday and Stenhammar arc- 

 treated here as genera. 



f Stenhammar's application of the generic name Psilopa, though not to the 

 original type, is adopted, to get rid of the synonym Hygrella, condemned on etymo- 

 logical grounds by Agassiz, not without reason. The different accent will admit 

 Psilopa to stand along with Psildpus (Fam. Dolichopida, i. 150). 



