Class IV. GLOBE TETRODON. 175 



erected on every part. The mouth is small ; 

 the irides white, tinged with red ; the back 

 from head to tail almost strait, or at lest very 

 slightly elevated ; of a rich deep blue color. 

 It has the pectoral, but wants the ventral fins ; 

 the dorsal is placed low on the back ; the anal 

 is opposite ; the tail almost even, divided by an 

 angular projection in the middle ; the tail and 

 fins brown ; the belly and sides are white, sha- 

 greened or wrinkled, and beset with innumera- 

 ble small sharp spines, adhering to the skin by 

 four processes. 



