320 EEV. A. E. EATON ON EECENT EPHEMERID.E OE MAYFLIES. 



ADDITIONS AND CORRRECTIONS. 



Pa2:e 4, line 3 from top, after " forms " read also in Lei^tohyphes and in the sub imago 

 (not the adult) of Epliemerella, it is there, &c. 



P. 20, 1. 17 from top, before " Bcetisca " insert Cloeon, JBaetis (with three sections). 



P. 21, 1. 2 from bottom, /or " Serie" read Series. 



P. 22, 1. 11 from bottom, dele " al " so as to read functionless. 



P. 36, 1. 18 from bottom, for " Section 2 of the Genus " read Section 2 of the 

 Genera. — 



P. 81, 1. 12 from bottom, for " Hagennbis " read Teloganodes. 



P. 95, 1. 8 from bottom, add Mr. Albarda has lately sent me specimens representing 

 both sexes of the imago and the 6 subimago of L. Meyeri captured in the Netherlands 

 at Ginneken, N. Brabant, and at Arnhem, Guelderland, which I returned to him 

 undescribed a few years ago. 



P. 101, 1. 15 from top, after " 172 (18C3) " add ; Walsh, op. cit. ii. 189 note 14, and 

 194 note 15 (1863). 



P. 101, 1. 18, after [details] add; Packard, in 3rd Rep. U.S. Ent. Comm. chap. xi. 

 (part), pis. xlv.-xlvi. [morphology] (1883). 



P. 106, 1. 10 from top, after Italy read Spain. Again, after " Portugal," add A speci- 

 men from San Ildefonso, Segovia (Ilei/er-Dur) is in Mr. Albarda's collection. 



P. 109, 1. 4 from top, /or Palenburg read Palembang. 



P. 114, 1. 9 from top, /or nodal point read bulla. 



P. 122, 1. 1, before Algarve read Spain. 



P. 122, 1. 14, after grey add ; neuration in opaque view concolorous with the 

 membrane. 



P. 122, 1. 13 from bottom, add A single ? subimago, considerably damaged by An- 

 thremts, from San Ildefonso, Segovia {Meyer-Dilr), in Mr. Albarda's collection has the 

 wing 8'5 mm. long. 



P. 124, 1. 2 from bottom, Ijefore GMdivA. insert The recurrent membrane of the fore wing- 

 roots extends in the form of short svibulate points beyond the peak of the scutellum in 

 the subimago ; but these mesonotal appendages are wanting in the imago. 



P. 139, 1. 13 from bottom, add In translating the description of this species in 1871, I 

 carelessly wrote ventralibus for dorsalibus. 



P. 141, 10. 2 from bottom, for " Homologue of the forceps-basis vindeveloped in ? ," 

 read Ventral lobe of ? segment 9 obtusely rounded off and entire. 



P. 143, 1. 2 from bottoms/or var. rivtjlorum read C^nis rivulorum, sp. nov. 



P. 144, 1. 8, to the localities quoted, add Also the Eden in Cumberland ; profusely 

 abundant at Langwathby on certain evenings towards sunset so as to jjroduce an 

 appearance as of mist or dense haze hovering over the course of the river. A single 

 Scotch specimen is in Mr. King's collection. 



P. 160, 1. 2 from bottom, after Brook ; add abundant in Briggle Beck and in the 

 Eden near Little Salkeld in Addingham, Cumberland ; 



