NO. 1222. 



ISOPODS OF THE ATLANTIC COAST— RICHARDSON. 523 



60. JEGA GRACILIPES Hansen. 



.Ega ffmcilipes Hansen, Isopoden, Cumaceen un.l Stoniatopo.len dvr Plankton 

 Exp., 1895, pp. 15, 16, pi. I, fig. 6-6c. 

 7/,,7,/^,,^._Gulf of Mexico; North Atlantic, 59,0° N. Int., 8,5° W. 



long. 



X>^^^/,._730 fathoms: 1 ,524 meters (Hansen). 



23. ROCINELA Leach. 



ANALYTIC.VL KEY TO THE SPECIES OF ROCINELA. 



a Eves contiguous. Head produced into process in front. 



•^ 61. llorinela nndnta Harger. 



a'. Eves not contiguous. _ . 



h Flat^ellum of second pair of anteniife with fourteen to sixteen joints. 



c Eyes close together. Head without median excavation, .lot bicannated. 



62. Rocinela insularis S('hioedte and Meinert. 

 c^. Eyes widely separated. Propodus of prehensile legs with two to four spines. 

 First thoracic segment normal. 

 (/. Frontal margin of head produced. 



, Head tulierculated 63. Rocinela cubenm Richardson. 



/. Head not tuberculated. With frontal excavation. Front bicannated. 



64. Rocinela dumeriUi {hucas) . 

 (V Frontal margin of head not produced. Terminal segment of body lingu- 

 ate; both branches of the uropoda crenulate on their external margins. 

 e. Spot's present on both sides of the fourth thoracic segment. 



65. Rocinela maculata Schi(jedte and Meinert. 

 e'. Spots wanting on fourth thoracic segment. Spots wanting on fourth and 

 fifth abdominal segments and terminal segment. 



66. Rocinela americana Schioedte and Meinert. 

 b' Fla-ellum of second pair of antennae with ten or eleven joints. No tubercles 

 ' developed on bodv. Terminal segment of body ornamented with a 

 pair of narrow semilunar bands, separated by a longitudinal stripe. 



67. Rocinela signata Schiredte and Meinert. 



61. ROCINELA OCULATA Harger. 



Rocinela ocnlatn Harger, Bull. Mus. Comp. Zool., Harvard College, IX, No. 4, 

 pp. 97-99, pi. Ill, fig. 2-2a; pi. iv, fig. 1. 

 JlaMfat.—^2° 18' 20" W. lat., T8° 43' W. long. 

 Depth.— 2o'2 fathoms. 



62. ROCINELA INSULARIS Schicedte and Meinert. 

 Rocinela insularly Schio-:dte an<l ^Meinert, Naturhistorisk Tidsskrift, 1879-80, XH, 

 pp. 390, 391, pi. XII, fig. 1-3. 

 //^^j/^f^^._West Indies; between delta of the Mississippi and Cedar 

 Keys, Florida; off Fernandina, Florida. 

 bej)th.—227 to 273 fathoms. 



63. ROCINELA CUBENSIS Richardson. 

 Rocinela cuhemis Richardson, Proc. Amer. Phil. Soc. XXXVII, 1898, pp. 13. 14. 

 Habitat.— O^ Habana. 

 Depth.— IV^ fathoms. 



