on the Ephemeride. 9 
1831, C. J. Carus, Fernere Untersuchungen tiber den Blutlauf in Ker- 
fen; in Act. Acad. Leopold. Carol. Akad. t. xv. Abth. ii. p. 11. [A mere 
statement that circulation is observable in the wings of E. lutea and man- 
ginata. | 
1832, R. Wagner, Beobachtungen iiber den Kreislanf des Blutes und 
den Bau des Riickengefiisses bei den Insecten; in Isis, ix. 322, pl. ii. 1. 
1832 (Grif. A. K.). G. R. Gray, The Class “ Insecta,” in Griffith’s 
eas Kingdom, ii. 296 and 313-20, pl. xciv.7,9. [Figures from Guér. 
c.] 
1833 (Bowerb.). J. 8. Bowerbank, Observations on the circulation of 
blood in Insects; in Ent. Mag. i. 239-44, pl. ii. 1-6. 
1834, A. H. Davis, Metamorph. of Ephemera; in Ent. Mag. ii. 322-3. 
1834 (Sam. Ent. Cab.). G. Samouelle, Entomological Cabinet, ii. No. 
53, pl. xxiv. 1. 
1834 (Curt. Phil. Mag.). J. Curtis, Descriptions of some nondescript 
British species of May-flies of Anglers; in Lond. and Edinb. Philos. Mag. 
ser. 3, pp. 120-2. EH. fusca. B. dispar, costalis, elegans, mellea, straminea, 
flavescens, lateralis, semicolorata, carnea, vernus, autwmnalis. C. mar- 
moratum, obscurwm, unicolore, dimidiatum. Brachycercus Harrisella, 
chironomiformis, minima. [The numbers prefixed to the names in the 
text refer to the second ed. of the Guide.] 
1834 (Curt. B. E.). J. Curtis, British Entomology, vol. xi. No. & pl. 
ececlxxxiy. 
1835, E. Newman, The Grammar of Entomology, pp. 248 and 255. 
Ephemerites and Ephemerina. 
1835 (Lamarck, ii.). J.B. P. A. de M. Lamarck, Hist. Nat. des Anim. 
sans Vertebres, ed. ii., t. iv. 422-5. HE. Swammerdania. 
1835-6, Allen Thompson, Article “Circulation,” in Tod’s Cyclopedia 
of Anatomy and Physiology, i. 651-2. 
1835 (Ste. Ill.). J. F. Stephens, Illustrations of British Entomology, 
Mandib. vi. 53-70, pl. xxix. EH. cognata, talcosa, submarginata, dispar, 
apicalis, rufescens, rosea, helvipes, dubia, minor. Cenis macrwra, dimi- 
diata, pennata, interrupta. Ba. longicauda, subfusca, obscwra, cingulata. 
Cl. ochraceum, hyalinatum, albipenne, cognatum, virgo. 
[The specimens in Stephens’ collection are named in accordance with 
his Catalogue, not with the Illustrations. The ticketted specimens, how- 
ever, partake in some measure of the nature of type specimens. Many 
of them are no doubt the originals of the descriptions in the Illustrations ; 
for Stephens had not access to many collections of Ephemeride; his 
descriptions are mostly taken from dried examples; and many of these 
specimens are of an older date than 1835. Those of them which conform 
to the descriptions in the Illustrations similarly named, may, therefore, 
be presumed to be virtually authentic. 
The collection comprises:—E. vunteata, 5 g im.; coanata, 3 g,5 2 
im.; stigMA,2 ¢ im.; Tancosa l 2 im.; LurEa, 1 Heptagenia elegans, S 
im.; MARGINATA, 2 H. semicolorata, g im.; supMARGINATA, 1 L. helvipes, 2 
im., &1 B. phwops, g im.; pDispar, 6, 1im., 1 subim.; nicRicans, 4 g 
im.; (pILUTA, absent); apicaLis, 2 Eph.ignita, g im., and 1 B. pheops, 
é im.; rurescens, 2 6,8 Y im.; puBis, 2 f im.; HELVIPES, 1 ¢ im.; 
RosEA, 1 ¢,1 2 im.; (vESPERTINA, absent). (C#NIS MACRURA, wanting); 
C. pennata, | 9; BREvVIcAUDA, 1 92; cHIRONOMIFOoRMIS, 1 macrura, § ; 
pimipmata, 2 g¢,1 9. Barris caupara,l ¢,2 9 im.; veNnosa, 1 6,22 
im.; suprusca,1 9 im.; FLAvEScENS, ¢ 1subim., 2 lim.; Basauis, 2 g 
im.; stRIATA, B. phwops, 2 1 im., 1 subim.; pH®opa (=phwops) 1 
subim.; opscura, 1 9 im.; HoRARIA, 1 Cloeon, sp. dub., 9 subim. and 
