380 



CHARACTERISTICS OF HEMITRIPTERIDiE GILL. 



proscapula, while between the fourth and the proscapula intervenes the 

 hypocoracoid ; the hypercoracoid might well be mistaken for an actinost 

 by one unacquainted with the morphology of the skeleton, as in fact it 

 has been in the case of Gyclopterus by Dr. Giinther. 

 Only one genus is known, viz: 



Hemitripterus Cuvier, R^gne An., 2. ed., vol. 2, p. 164, 1829. 

 Type H. americanu8=Scorp(ena americana Gmel. 



Plate XXXI. 



Pig. 1. Hemitripterus americanus (reduced from Goode). 



2. Cranium from side. 



3. Cranium la medisection. 



4. Cranium from above. 



5. Cranium from below. 



EXPLAXATION OF LETTERS. 



bo, Basioccipital. 

 eo. Exoccipital. 

 epo. Epiotic. 

 ^th. Ethmoid. 

 fr. Frontal. 

 opo. Opisthotic. 

 jtar. Parietal. 



