1901.] 0?f THE A?f ATOMY Or ANASTOMUS. 365 



In the original uccoimt of G. rohusivs the pofsition of the tirst 

 nephridiura was not iixed. The first pair seem to be in segment v. 

 The segments in front of this are so tilled up by the pharynx and 

 associated glands that there would appear to be hardly room for 

 a pair of nephridia. The median calciferous gland of this species 

 was single, not paired as seems to be sometimes the case in the 

 species. 



The spermatheca* have an extraordinarily long duct, the length 

 of which in relation to the pouch is inadequately represented in 

 the ligure illustrating it in the original memoir. It is no thicker 

 than the sperm-duct and runs a straight course to its oritice. 



3. Some Notes upon the Anatomy and Systematic Position 

 of the Cicouiine Genus Anastonius. By Frank E. 

 Beddakd, M.A., F.R.S.^ Prosector and Vice-Secretary 

 of the Society. 



[Eeceived Aprils, 1901.] 



(Text-figures 89-91.) 



Two out of the three examples of Anastomus oscitans acquired 

 by the Society on Jan. 4th having died, I am able to contribute 

 to our knowledge of the structure of the Order Herodiones by an 

 account of certain points in the anatomy of this genus. So far as 

 I am aware, Anastotmis is one of the few genera of Storks which 

 has not been dissected; and, as the genera of this order show some 

 differences of structure, it is important to ascertain how Anastomv.s 

 stands in relation to its allies. The chief sources of information 

 as to the structure of the viscera and musculature of the Ciconiida? 

 are those stated below ^ 



These various memoirs and books contain information upon 

 nearly all the genera of Storks ; the only prominent genus which 

 has not been treated of is that which forms the subject of the 

 present communication. There has not been, so far as I am aware, 

 any doubt as to tht^ truly Stork-hke characteristics of Anastomvs. 



' G.VRRon, " On the Carotid Arteries of Birclg," P. Z. S. 1873, p. 457 ; id., " Ou 

 certain Muscles of the Thigh of Birds, &c.," ibid. 1873, p. 626 ; id., " On the 

 Form of the Trachea in certain Species of Storks and Spoonbills," ibid. 1875, 

 p. 297 ; id., " Note on an Anatomical Peculiarity in cei'tain Storks,'' ibid. 1877, 

 p. 711 ; id., " On the Trachea of Tantalus locidator, &c ," ibid. 1878, p. 625. 



Welbon, " On the Anatomy of Pkoetiicopterus and its Allies," P. Z. S. 1883, 

 p. 638. 



FrEBKiNGEKj Untersuchungen liber Morphologic and Systematik der Vogel. 

 Amsterdam, 188S, passim. 



Beddakd, "A Contribution to the Anatomy of Scopus u/iihretta," P. Z. S. 

 1884, p. 543 ; id., " On certain Points in the Visceral Anatomy of Baleen icq}ti 

 rex," ibid. 1888, p. 284 ; id., " Notes on . . . the Syrinx in certain Storks," ilnd. 

 1886, p. 321 ; id., " A Note upon Bissura einscopn.'i, with Remarks upon the 

 Classification of the Herodiones," /6/f?. 1896, p. 231; id., The SirucLure and 

 Classification of Birds, London, 1898. 



Gapow, "A\es"' in Bronn's ' Klassen qnd Ovduuiigen des Thier-Reichs,' 



