57 



brad and perforated ; the basihyal very null and simple, and the urohyal is much expanded 

 vertically. 



The parapophytea begin to be dereloped from the sixth abdominal vertebra, are united 

 together to form a harm*! canal at the tevrnth, and contribute to form the posterior boundary 

 of the abdomen at the eleventh vertebra. The ribs are long and alender, and articulated, in 

 the third, fourth and fifth abdominal vertebne, to deep cavities at the tide* of the centrum. 



Presented by the Rev. R. T. Love, M.A., F.L.S. 



-II A portion of the skull of a small Scisenoid fish, showing the coarse reticulate 

 structure of the exterior surface of the bones of the head, which characterizes 

 most of the fishes of this family. Hunt man. 



Family SparitUf. Sea Breams. 



212. The cranium (wanting the opcrcular bones and the hyoidean and scapular 



arches), with seven anterior vertebra; of a Sporoid fish of the genus Sarytut, 

 Cuv. 



The incisor-shaped anterior teeth are six in the upper and eight in the lower jaw, as in the 

 .Vary** nfttrm*. The tuperoccipital, paroccipital, and frontomastoid crests are strongly 

 developed : and the presphenoid bone send* down a deep crest. 



The centrum of the atlas U wedge-shaped, and presents eight articular surfaces ; one 

 anterior and concave for the basioccipital ; one posterior and concave for the body of the 

 axis, these nearly meet below ; two flat surfaces on the upper and fore part on which the 

 exoccipital surfaces rest ; two on the upper and back part on which the anterior xvgapophyses 

 of the axis rest ; and two small deep pits above for its own neurapophyses ; these elements 

 send out short parapophyses and zygapophyses, which latter rest upon the exoccipitals. The 

 parapophyses are developed from the base of the anchylosed neural arch in the axis ; they 

 sink upon the sides of the centrum in the third, and descend lower down in the fourth and 

 fifth vertebra? . The anterior ivgapophyses overlap the posterior ones, their relative positions 

 being the reverse of those in Mammalia. 



Hunterian. 



213. A mutilated skull of a small species of Bream (Sarytui). 



The occipital, parietal and mastoid crests are strongly developed, and the postfrontal also 

 sends out a projecting process. On the right side the tympanic pedicle and its ap|>endages 

 have been removed to show the form of the basisphenoid and the Urge basicranial canal 

 the entry to which is divided by a vertical bar or plate ; there are six incisors in the upper 

 and eight in the lower jaw, as in the preceding species and in the Sarytu nfeternt. In 

 Sargm on* there are eight incisors in both jaw*. 



