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THE AMERICAN NATURALIST [Vol. XLI 



between his Orders Pelargonithes and Charadriornithes. He 

 considers the Procellariiformes to contain the Procellariae or 

 Tubinares to which group he gives the name of 'Gens.* The 

 Gens Procellarise according to him contains but the single family 

 — Procellariidse. Above the Procellariiformes in the Order 

 Pelargomithes we find the Gens Steganopodes. 



In 1890 Mr. H. Seebohm in his "Classification of Birds," — 

 the "alternative scheme" makes an Order of the Tubinares, 

 placing them in his subclass Ciconiiformes, between the Stegan- 

 opodes and Impennes. Thus his third subclass of birds is ar- 

 ranged as follows: — 



Subclass. Ordp:r. 



Psittaci. 



Raptor* 



Pelecano-Herodiones 



Tubinares. 



Suborder. 

 14. Psittaci. 

 rl5. Striges. 

 16. Accipitres. 

 [ 17. Serpentarii. 

 fl8. Plataleae. 

 I 19. Herodiones. 

 120. Steganopode 



21. Tubinares. 



22. Impennes. 



Professor Hans Gadow regards the T 

 light as they are by Fiirbringer, placing them as an Order Procel- 

 lariiformes, (9), between the orders Sphenisciformes (8) and 

 Ardeiformes (10), the first suborder of the latter being the 

 Steganopodes.^ 



The 'Procellariiformes' constitute Order XV of Dr. Sharpe's 

 classification, and it is subdivided into a suborder — Tubinares, 

 which latter is made to contain the three Families: (1) Diome- 

 deidte, (2) Procellariidae, and (3) Pelecanoidte. Of this author's 

 scheme, Order XIV contains the Sphenisciformes, and Order 

 XVI, the Alciformes.' This authority likewise widely separates 

 the Tubinares and the Steganopodes, the last being included in 

 his Order XXIII or the Pelecaniformes (loc. cit. p. 76). In 



