81 



357. The skeleton of a Globe-fish (Telrodam). 



In this may be noticed the absence of rib*, the clamped mode of union of the anterior ab- 

 dominal vertebne with each other and with the ikull, and their double spinou* processe*. 

 hii-h converge and unite into one at the firth vertebra. The number of abdominal vertebne 

 is 7 ; that of the caudal vertebne, 10 : total. 17. 



Purchased. 



358. A portion of the cranium, including the upper and lower jaws of a small Globe- 

 fish (Telrodom). 



The four seemingly single teeth are composed of smaller laminated denticles, cemented 

 together by a common outer coat of enamel. The upper ends of the plate* give the appear- 

 ance of a dentated suture to the contiguous margin* of the premaxillary bones, and the same 

 appearance U manifested in a lens degree at the symphysia of the lower jaw. 



IlunteriaH. 



359. The upper and lower jaws, with the interlocked portions of the palatine and 



tympanic pedicles of a Globe-fish ( Telrodon). 



The present specimen well illustrates the serial homology of the palatine (20) with the 

 hypo-tympanic (28), of the maxillary (21) with the articular (30), and of the premaxillary 

 (22) with the premandibular (32). 



Iliinteria*. 



360. The upper and lower jaws of a Globe-fish (Tet ' radon). 



The premaxillary with its beak-shaped dentinal coating represent*, above, the similarly 

 shaped and similarly armed prrmandibular below : the edentulous maxillary with its concave 

 articulation for the palatine represent* the articular piece of the lower jaw with the concave 

 articulation for the tympanic pedicle : the palatine which present* the condyle to the max- 

 illa answers above to the tympanic which presents the condyle to the mandible below : and 

 the palatine and tympanic are connected together by the medium of the pterygoid bone. 



Jfunterian. 



361. The dried skin of a Tetrodon, in which the spines are so small and numerous 

 as to give it a hirsute character. Purchased. 



362. The principal bones of a mutilated skull of the Sun-fish (Orthagorinc** mold). 



They show the light fibrous semioasified character of the bones of this singular fish ; the 

 osseous tissue having the appearance of decayed wood. The premaxillary bone* are auchy- 

 loaed together, and the premaiidibular bones, in like manner, at the xymphysis : the alveolar 

 borders of both bone* are coated with a layer of hard dentine, with trenchant margins, and 

 are shaped like the beak of a Turtle. The name* of most of the bone* are indicated by 

 numbers corresponding with those in Table I. 



/'retented by Capt. Suliva*. K.A 



