458 



DR. W. G. RIDEWOOD ON THE CRANIAL 



[Dec. 13, 



frontal which has the boss of cartilage, the palatine merely 

 offering a flat facet for articulation with it. 



I fail to comprehend the meaning Of Owen's remark (Anat. 

 Vert. i. 1866, p. 117) that " in the Shad the palatine articulatevS 

 with the premaxillary as well as the maxillary." The palatine 

 does not touch the premaxilla in Ghq)ea finta. 



There are no teeth on the palatine or pterygoid bones in Clu2)ea 

 finta, but two or three minute teeth occur on the palatine of 

 Clupea harengihs, while in Clupea sp7'aUus there is a row of 

 minute teeth on the palatine, extending back even on to the 

 entopterygoid. Matthews states (I.e. p. 291) that in the Sprat 

 there are a few delicate teeth on the metapterygoid. These 

 I have failed to discern. 



Text-fig. 125. 



eb'^ 



pb'^(ct) 



^h^ 



hh'^^^(oi) 



cb'^ 



Clupea liarengiis. A, liyobrancliial skeleton, dorsal view. The epibranchials and 

 pharj'ngobranchials of the left side are not shown. B, fourth and fifth 

 branchial arches of the right side, mesial aspect, more enlarged than fig. 125 A. 

 For explanation of lettering see ji. 493. 



