Vol. xxii] ENTOMOLOGICAL NEWS. 419 



ponse. Latreille did not here give any types; he left in Aranea 3 spe- 

 cies (although he did not account for all previous species). 



Now F. O. P. Cambridge holds (Ann. Mag. Nat. Hist. (7) vol. 

 VII, p. 61) that in mentioning only these three species under Aranea 

 he thereby limits Aranea to them, and the type must be one of these 

 three, instead of any of the numerous species originally under Ara- 

 neus. This interpretation was somewhat warranted by the Interna- 

 tional Congress at Moscow in 1892, but it is not in any way war- 

 ranted by the International Code now, the Boston meeting having 

 distinctly ruled on methods of type-selection; nor is it supported by 

 the Ornithologists' Code. The listing of species in genera does not 

 in any way affect the selection of type. Any species originally in the 

 genus is eligible as type, or according to some any not already types 

 of other genera. From 1804 till 1810 there was no indication of type, 

 but in 1810 Latreille (in Consid. gener.) gives as type of Aranea A. 

 domestica, an eligible species. 



F. O. P. Cambridge held this invalid because A. domestica was not 

 included by Latreille in Aranea in 1804 as one of the three species, but 

 as shown above zoological rules do not accept the mere division of a 

 genus without type-selection as affecting type-selection. Therefore if 

 Araneus is to be used it has as its type A. domestica, and thus would 

 replace Tegenaria, and not Epeira. 



In 1806 Latreille gave Aranea with Tegenaria and Agelena as syno- 

 nyms but without type-selection. 



If Latreille in 1804 had mentioned but one species in Aranea it would 

 not be the type, it must be stated to be the type. 



According to rules the genus Araneus must be used; it cannot be 

 discarded on the grounds given by Thorell and Sundevall. 



It may be remarked that Lamarck in 1801 cites two species as repre- 

 senting Aranea (one A. domestica) so that he did not fix the type 

 although some consider that where he gives but one species it is type- 

 selection. NATHAN BANKS, East Falls Church, Virginia. 



MIGRATIONS OF DRAGONFLIES (ODONATA) AND OF ANTS (HYMEN). 



Under other cover, I send you a number of dragonflies, apparently 

 of the same species. These with many others, I knocked down with 

 my hat during their migration last evening [Sept. 2, 1911]. 



\\"e have a cottage at the end of Cape May, near the new hotel, 

 known as the eastern extension. Between us, the ocean, the thorough- 

 fare and Sewell's Point there is nothing but a waste of newly filled-in 

 sand and a few cottages; no ponds, pools or depressions. 



I noticed the first of the flight about 5.45 P. M. in a few stragglers 

 flying near the house, swiftly and in one direction, [which, from a 

 sketch included in Mr. Wolf's letter was from northeast to southwest, 

 the wind blowing at the time in the opposite direction]. Then they 



