5^8 Mr. K. W. Hooley on the 



(PL XXir. fig. 4), and therefore iti future should be known 

 as a svnoJiym of Criorhynchus sintus, and naturally falling 

 into Group no. 4 as above. 



Ornithocheirus daviesii (Owen). 

 Rep. Meso. Form. (Pal. Soc. 1874) pt. i. p. 2, pi. i. figs. 5 & 6. 



The form and size of the teeth and the lanceolate shape of 

 this dentary bone prove it to belong to Group no. 2. 



Ornitliocheirus giganteus (Bowerbank). 



Quart. .Journ. Geol. Soc. vol. ii. (1846) p. 8, pi. i., and elsewhere. 



The tip of the muzzle of both the upper and lower jaw. 



We are convinced that its conical shape has been produced 

 by vertical expansion due to pressure, and possibly its widtii 

 proceeds from the same cause. Taking this into considera- 

 tion, and also the type of the teeth, which are strongly 

 characteristic, this species can be included within Group 

 no. 2. 



Ornithocheirus reedi (Seeley) . 

 Geol. Mag. [2] vol. viii. (1881) p. 13, pi. i. tig. 3. 



Seeley * says this species " closely resembles Ornitho- 

 cheinis capita " ; therefore it comes into Gi'oup no. 4, 



Ornithucheirus sagittirostris (Owen). 

 liep. Meso. Form. (Mou, Pal. Soc. 1874) pt. i. p. 3, pi. ii. 



These mandibular rami from the Wealden, by the angle 

 of their convergence towards the symphysis, and the form, 

 size, and arrangement of the teeth belong to Group no. 2. 



Ornithocheirus xyphorhynchus (Seeley) . 



'Ornithosauria,' p, 117 ; and Geol. Mag. [2] vol. viii. (1881) p. 18, pi. i. 

 lig. 2. 



In the former paper Seeley determined this fragment to 

 be a part of a premaxillary, in the latter of a dentary. It is 

 very close to Ornitliocheirus sedgwicki, and should therefore 

 be included in Group no. 1. 



• II. G, Seeley, ' Orinthosauria,' 1870, p. 127. 



