In the second part of the paper Dr. Ridewood discussed the 

 relation of endosteal to ectosteal ossification, the eye-muscle 

 canal, the various fossae, fenestras, and the larger foramina of the 

 cranium, the bullae enclosing vesicles of the swim-bladder, the 

 union of a vertebral centrum with the back of the basicraniai 

 axis, the brush-like tendon-bones at the back of the skull (the 

 opisthotic limb of the post-temporal was shown to belong to this 

 series), the supratemporal and subtemporal bones, the sesamoid 

 articular (so-called "coronoid"), the modes of articulation of the 

 palatine and the hyomandibular bones with the cranium, the 

 opercular bones, the hyobranchial skeleton, and the " spicular 

 bone " (which Dr. Ridewood showed to be an ossified ligament, 

 and not the first pharyngobranchial as had been previously 

 supposed). 



The next Meeting of the Society for Scientific Business will be 

 held on Tuesday, the 17th May, 1904, at half -past Eight o'clock p.m., 

 when the following communications will be made : — 



1. Sir Charles Eliot, K.O.M.G. — On some Nudibranchs from 

 East Africa and Zanzibar. — Part V. 



2. Mr. G. A. BouLENGER, F.E..S. — Description of a new Tree- 

 Frog of the Genus Hyla, from British Guiana, carrying Eggs on 

 the Back. 



3. Mr. F. E. Beddard, F.R.S. — JSTotes upon the Anatomy of 

 certain Boidce. 



The following Papers have been received : — 



1. Dr. G. Stewardson Brady, F.R.S., C.M.Z.S.— On Entomo- 

 straca collected in Natal by Mr. James Gibson. 



2. Lt.-Col. J. Malcolm Fawcett. — On some new or little-known 

 Butterflies, mainly from high elevations in the N.E. Himalayas. 



3. Dr. P. Chalmers Mitchell. — On the Disposition and 

 Morphology of the Intestinal Coils in Mammals. 



Communications intended for the Scientific Meetings of the 

 Zoological Society op Londok should be addressed to 



P. CHALMERS MITCHELL, Secretary/. 



3 Hanover Square, London, "W. 

 lO^A Mmj, 1904. 



