TREMOCT0Pi:S. 



131 



Verany remarks that whilst it luis thv facie, ^ of Treiaoctopus, 

 it does not possess the characters of that genus. This may he 



on account of its young age. 



N. Atlantic Ocean. ; Sirily. 



T. DUBius, Souleyet. PI. 43, tigs. SO, Si. 



Body subovate, smootli ; eyes large, ])romineiit ; arms slioi't, 

 unequal, palmate at the l)ase. 



Length, (> mill. 



This is also a juvenile form, not in condition for identification. 



Near Mauritimt. 

 T. GRACILIS, Souleyet. PI. 48, figs. S2, 83. 



Bod}' rounded, smooth ; head small ; eyes large, iironiinent ; 

 arms graceful, the. upper very long, lower short, connected by a 

 web. Phosphorescent and with metallic reflections when living. 



Length, 24 mill. 



Probably a young animal, but distinguished from the pre- 

 ceding species by its well-developed web, connecting all the arms. 

 Long. 106O TT., lat. 8° N., Pacific Ocean. 



T. HYALiNus. Rang. PL 43, figs. 84, 85. 



Bod}' short, broad, smooth, oval, larger before than behind ; 

 aperture very large ; head short ; eyes larg'e, pronunent, sub- 

 pednnculated ; arms unecjual. not webbed, as long as the body ; 

 order of length 1. -2. 3. 4. Dia])hanous, whitish marked with red. 



D'Orbigny says: '' Witliout doul)t tlie young of one of the 



species." 



Atlantic Ocean. 

 T. QuoYANus, Orb. PI. 44, figs. !U, 1)2. 



Body smooth, oblong, large ; white, marked with red ; head 

 large, smooth ; eyes large, prominent, without eyelids, blue above ; 

 two aquiferous pores between the eyes and two below. Arms 

 elongated, unequal; order of length 1, 2. 4.3; two dorsal i)airs 

 "webbed together half their length. 



Total length, 42 mill.; of body, 12 mill.; length of arms 1. 24 

 mill.; 2. 22 mill.; 4, 20 mill.; 3, Ifi mill. 



Lat. 240-260 N., Long. 30° W., Atlantic Ocean. 



T. viOLACEUS, Chiaje. PL 43, figs. 8(5-90 ; PL 44, figs. 93, 94. 



Body rather ovoid, truncated anteriorl}^, nearly smooth, 

 violet ; head short ; aquiferous pores, four on the back of the 



