II 



.' " - The dcutary or premandibular pieces of the lower jaw of the Spkyretna Barra- 

 cuda. H ii ii I r r i tin 



203. Thf preiuaxillary and prcmandibular bones of a Fish, having a single row of 



small, subcompressed, pointed and incurved teeth, of nearly equal size, along 

 tin- ulu-oliir border of each of these bands : two of the teeth arc rather larger 

 than the rest at the fore-part of the lower jaw. The teeth are implanted in 



Mckrts to wUek kfcq m -ii-i.'K ;m< h\l<..-,,! tli,\ an- M|,aratnl iV-mi . a< I, 



other pretty regularly by alveoli, from most of which the apex of a SUCOM- 



sional tooth projects. This dentition resembles that of the Acanthoptcrygian 



genera, Nonufm and Sphyretna, t-s] it-dally the hitter. JIunteria*. 



Family Sderoffenida, or Mailed-cheeked Acanthopteri . 



204. The skull, with part of the dried integuments, of the Coitus quadricornu : 

 v showing the situation of the teeth on the prcmaxillary and prcmaudibular 



bones, on the vomer, the branchial arches and pharyngeal bones. All the 

 teeth are of the villiform kind, those on the jaws being the strongest. The 

 suborbital scale-bones are largely developed. Hunicrian. 



205. A similar specimen of the Cot tux scorpitu. In both these skulls the suborbital 



dermal bones extend backwards to the preopcrcular bone, and in both may 

 be noticed the long and strong spine, developed from the preopercular, the 

 wound from which is much dreaded by fishermen. Httnterian. 



206. The skeleton of the long-spined Colin* (Coitus bubali*). It is remarkable for 



the long and strong spines developed from the opcrcular and preopcrcular 

 bones. The number of the abdominal vertebra- u 11, that of the caudal ver- 

 tebrae, 23 : total, 34. Mtu. South. 



207. The skeleton of a Gurnard (Triyla lyrd). 



The skull is chiefly remarkable for the enormous derelopment of the anterior suborbital 

 bone, which extends from before the premaxillary to the preopercular bone ; defending the 



' Car. 



