CALLIOPE FINGALLI. 



AMPHIPODA. 



NAT ATOM A. 



263 



GAMMARIDES. 



CALLIOPE FINGALLI. N.S. 



Specific character. Like C. Ossiani, but Laving the last segment of the 

 pereion, and first three of the pleon, with the posterior dorsal margins pro- 

 duced into an obtuse tooth, each increasing in size posteriorly. 



Length ^ inch. 



This species may possibly be only an exaggerated 

 variety of C. Ossiani. All the features peculiar to that 

 species appear, however, in this, to be so much de- 

 veloped (as noticed in our descriptions), that they alto- 

 gether change the appearance of the animal. 



The cephalon is produced anteriorly into a short flat 

 rostrum. The back of the animal is round from the first 

 to the seventh segment of the body, which is produced 

 posteriorly and slightly elevated into a tooth. This 

 feature is repeated in the first three segments of the 

 tail, increasing in dimensions posteriorly. The teeth are 



