rSEUPO-NEUROPTBllA, 
407 
Ann. Ent. Belg. xlv. pp. 9-20, publishes a list of Algerian species, noticing 
the new discoveries, changes in nomenclatiu’e, &c.’ since the publication of 
the list in the ^ Revue des Odonates,’ in 1860. He now enumerates 47 species, 
of which 6 belong to the purely tropical groups, whose headquarters are in. 
tropical Asia and Africa ; 6 are of European facies, but have not yet been 
found in Europe; the remaining 37 species are European. 
Packard, in Mem. Peab. Ac. i. no, 2, has a memoir on the development 
of Diplax and Perithemisj illustrated by plates and woodcuts. 
E. T. Koppen, in S. E. Z. 1871, pp. 183-188, has a chronological rdsumcj 
from 1494 to 1868, of the records of the flights of swarms of species of 
Dragonflies, especially Lihcllula qiiadrimaculata. 
Muller, Ent. M. M. viii. p. 127, notices the method of oviposition of Xe- 
hellula Jlaveola, confirming von Siebold’s assertion (concerning L. scotica) 
that the male retains his hold of the female during oviposition, and appa- 
rently directs her movements. 
M^Lachlan, in Proc. E. S. 1871, p. xxxix, alludes to the mimetic re- 
semblance existing between the $ of Plathemis trimaculata and Lihellula 
pulchclla, and these remarks are followed by a discussion as to the liability 
of Dragonflies to the attacks of birds ; continued at p. xlvii. 
Doubleday, Ent. M. M. viii. p. 80, gives a list of 30 spp. occurring near 
Epping, in Essex. 
Dietrich, Ent. Bl. i. pp. 23 & 24, criticizes Duplessis’s local list of Swiss 
species (Mitth. schw. ent. Ges. ii.), lie states that, of the 60 Swiss species, 
44 occur in the Canton Zurich. 
CorduUina. 
De Selys-Longchamps has published, as a further instalment of his 
general synopsis of the families of the Odonaia, a ^ Synopsis des Oordulines ’ 
(Bruxelles : 1871, pp. 1-128 : published also in Bull. Ac. Belg. 1871, pp. 238- 
316, 619-666 ; but as the separately published form of the various parts of 
the series is better known, the Recorder quotes from it in preference). The 
anticipated arrangement noticed in Zool. Rec. vii. p. 449, has been somewhat 
modified. The two Legions ” are now termed Cordtdia and Macromia, 
The first is divided into two genera,” Cordulia and Cordidephya ; and Cor'- 
dulict is subdivided into five subgenera,” Hemicordvlia, Cordulia, Epitheca, 
Oxygastra, and Gomphomacromia, which ore tabulated as under ; — 
A. Internal triangle wanting in the posterior wings. 
a. Anal margin of the posterior wings rounded in the S • 
Ilemicordulia. 
]b. Anal margin of the posterior wings of the ^ excavated. 
Cordulia. 
B. Internal triangle present in the posterior wings. 
a. Internal triangle of the anterior wings with 2-3 cellules. 
Epitlieca . ' 
b. All the triangles without nervules. 
a. Sectors of the arculus separate at their base . . Oxygastra. 
Sectors pf the arculus united at their base in the posterior wings. 
Gomphomacromia, 
