28 



ICHTHYOPTEKYGIA. 



widely from the coracoid of Ophthalmosaurus. It is 

 indistinguishable from the coracoids figured by Phillips in 

 his ' Geology of Oxford,' p. 340, diagram cxxxiii. fig. 1. 



Purchased, 1870. 



42287. A smaller and much crushed coracoid of similar general 

 type ; from the Kimeridge Clay of the Isle of Portland. 



Purchased, 1869. 



42284. The imperfect and crushed left humerus of a large indi- 



vidual ; from the Kimeridge Clay of the Isle of Portland. 

 The characters of this specimen appear to be very similar 

 to those of the humerus figured by Phillips, op. cit. p. 340. 

 The two distal facets are very distinct. Contrasted with 

 the humerus of Ophthalmosaurus icenicus (No. 47785, 

 p. 11), this specimen differs not only in the number of 

 distal facets, but also in its narrower form and less expanded 

 extremities. It is highly probable that this specimen 

 belongs to the present species. Purchased, 1869. 



42286. A somewhat smaller and slightly imperfect right humerus, 

 {Pig.) which may or may not be specifically identical with the 

 preceding ; from the Kimeridge Clay of the Isle of Portland. 

 The distal extremity (fig. 9, p. 14) is entire, but the 

 radial angle of the proximal end has been broken away. 

 The contour, which in the preceding specimen has been 

 lost by crushing, is perfectly preserved. Purchased, 1869. 



42285. A slightly imperfect right humerus agreeing in size with 



the preceding specimen, but apparently indicating a 

 different species ; from the Kimeridge Clay of the Isle of 

 Portland. This bone is relatively longer and thicker than 

 the preceding. Purchased, 1869. 



42283. The left humerus of a large individual ; from the Kimeridge 

 Clay of the Isle of Portland. This specimen has not 

 suffered from crushing, and is characterized by its extreme 

 breadth, and the short downward extent of the trochan- 

 teric ridge on the dorsal surface. Purchased, 1869. 



R. 275. The left humerus of an enormous individual ; from the 

 Kimeridge Clay of Shotover. This specimen is remarkable 

 for its extreme elongation, and forms a marked contrast 

 to the preceding specimen, from which it appears speci- 

 fically distinct. Egerton Collection. 



