BV E. HAVILAXD. 397 



larger, the filaments very much less thickened at the summits, 

 and the stigma, instead of being almost or quite as large as the 

 ovary, is so small as scarcely to be distinguished from the short 

 style. The difference in this respect is so great, that, were it not 

 that Bentham mentions that this species is sexually dimorphous, 

 and that I am assured by unquestionable authority that the two 

 forms are identical, I should consider them distinct species. 



Note on some points in the Anatomy of the Pigeons 



BEFEREED TO BY Dr. Ha.NS GrADOW IN A RECENT PAPER ON 



THE Anatomy of Pterocles. 



By William A. Haswell, M.A., B.Sc. (Edin.) 



In part II. of the Proceedings of the Zoological Society of 

 London for 1882, which has just come to hand, I find in a paper 

 by Dr. Hans G-adow on the Anatomy of Pterocles some state- 

 ments called forth by a paper of mine published in the Proceed- 

 ings of this Society (Xotes on the Anatomy of Birds, III. — The 

 Myological Characters of the Columbidae, Vol. iv., pp. 306 — 310 

 [1880].) 



I must first explain that the paper in question was in reality 

 an abstract of a veiy much longer and more detailed account of 

 the entire system of limb-muscles in the Pigeons, together with 

 comparative studies of many other birds, which was presented to 

 the Society at the time, and this may serve to account for the 

 condensed form in which it appears. At the end of the short 

 abstract I summarise the leading characteristics of the muscular 

 system of the Pigeons in five statements. These I regard, taken 

 all together, as enabling us to give a myological definition of the 

 order. I do not state that all these points are peculiar to the 

 Pigeons , I merely allege that they are characteristic of them as 

 a group — a distinction which appears to me perfectly obvious, 

 but which Dr. Gradow seems not to apprehend. These five 



