( 498 ) 



in Skizz. Entic.-Gesck. Xat. Si/st. 1829 proposed new ireneric names: on p. 'il 

 Actochelidon for Sterna cantiaca; Ilijdroproyne on p. 1(1 for Sterna raspia and 

 aranea {anglica) ; and on p. 97 gave Thalassaea with Sterna Dougalli as only 

 species. Inasmuch as he thns ty])ified Tliahixxni'ii (= 7'/ri/nssi'».s) by a species not 

 inclnded in the original list his action cannot be accepted. 



Brebm in the Isis 183U p. 994, ignoring Kanp's action, divided Bote's genus 

 into three, restricting Tltalassetis to Sterna cantiaca, and inventing S>/loclieli(lon 

 for Sterna caspia and Gelochelidon for Sterna anglica. Tiie i'ullciwing year in the 

 Vogel Deutscklnnds p]). 707 et seq. Brehm fully described these genera, and abso- 

 lutely settled the matter as regarding the type of Thalasseus. In 1840 Gray 

 endorsed Brehm's action by selecting cantiaca as type of Tludasseus Boie. At 

 the same time he noted Brehm's Si/lochelidon, but did not know of Kanji's work. 

 In 185.J Gray changed the t}peof Tludasseus to fre.fyy/a, synonymizing lli/droprogne 

 Kanp, and then accepting Actochelidon Kaup as typified by cantiaca. But there 

 was no valid reason for such alteration, Gray's first action being quite legal, and, 

 considering Brehm's work, the only course open to him. Moreover, Heichenbach in 

 1852 (Naturl. Sgst. Vogel p. v, 1852) indicated cantiaca as the type of Thalasseua. 



Page 21 : Species 128. Sterna fuscata Linne, Sgst. Xat. Xllth Ed. ji. 228 (1700) 



replaces Sterna fidtginosa. Gm. 1788. 

 „ 22 : Genus LXXVI. Catliarncta Briinnich, Orn. Bori'al. 1704. p. 32 



replaces Megalestris Bonap. 1850. 

 The case of Catharacta versus Megalestris has been argued by J. A. Allen 

 {Auk vol. xxi. p. 345, 1904), who decided in favour of tlie latter. Allen rejected 

 Catharacta on account of a prior Catarractcs of Brisson. As Brisson was a non- 

 binomial author his name has no standing in scientific nomenclature. Briinnich's 

 first species was Catharacta skua ; his figured species was C. ce/jphus = Larus 

 parasiticus L. Allen argued that the latter species should be taken as type, bnt 

 the former was accepted by Linne in tiie Xllth Ed. Sgstema Satarue as Larus 

 catarractes, and hence " by virtual tantouymy " might be regarded as tyjie. 

 However, Gray in 1840 designated Catarracta skua as type of Catarracta, whicii 

 genus, as was his wont, he assigned to Ray. I would agree to Gray's action, as by 

 means of it we can preserve Stercorai-iua for the birds typified by Larus parasiticus 

 by taking SchaefFer's introduction of that genus. Schaeifer utilized it for Larus 

 parasiticus alone, following Linne in referring catarractes to L^arus. 



Page 22: Genus LXXVII. Stercorarius Sciiaeffer, Mus. Ornith. 1789. p. 02 

 vice Stercorarius Brisson. 

 „ „ Species 142. iS'^. parasiticus Linn6, Sgst. Sat. ed. x. p. 130 (1758) 



replaces St. crepidatus Banks, 1773. 

 ,, 23: Genus LXXVllL .Wwv'/ie^Za Meyer und Wolf, Tuschm/i. d. Vogel p. 383 

 note (I&IO) 

 replaces Arenaria Brisson. 

 „ 24 : Genus LXXXllI. Sipmtarola Cuvier, Rcgne Animal i. ]). 407 (1817) 



vice Squatarola Leach. 

 „ „ Species 150. The specific «i/«ata/Y»/" L. 1758. p. 149 



rei)liices hdretica L. 1706. 

 „ 25 : Genus LXXXVlll. Himantopus bonnate.re, 'i'abl. En\ Meth. Ornith. 

 pp. Ixxxii iV 24 (1790) 

 vice Himantopus Bn.>son. 



