32 Mr. Lubbock on 



ramus has tlie apical segment longer than the other two to- 

 gether. 



The fourth pair of natatories has the inner ramus obsolete; it is, 

 however, represented by a little knob with a long seta. The other 

 ramus has three sub-equal segments. There is a basal hair, but 

 it is not plumose. 



I am not sure whether the abdomen consists of two or three 

 segments, for there is a line across the basal part, but I do not 

 think it represents a joint. 



In Dana's arrangement of the genus this species would come 

 next to C. latus, from which, however, it may at once be known 

 by the caudal stylets being almost as long as the abdomen. 



Attached to the abdomen was, in one case, one, in another two, 

 small oval membranous sacs, which I suppose to be spermatic 

 tubes. 



Length -083. 



Atlantic Ocean. 



PI. VIL figs. 7, 12. 



Corycceus slyliferus. 



Cephalothorax angulis posticis elongatis. Conspicilla remo- 

 tiuscula. Antennae anticse longe setulosse. Antennarum 

 posticarum carpus digito brevior, setis duabus carpi fere lon- 

 gitudine, nudis ? Abdomen 2-articulatum. Styli caudales 

 abdominis longitudine, seta unalonga, stylis vix breviore, aliis 

 brevibus. 



Length of cephalothorax, including the angles, '036 ; of the ab- 

 domen, -025 ; total length -056. 



Collected in N. S. 12° 21' ; W. L. 25°. 

 PI. V. figs. 7, 8. 



Copilia Atlanlica, n. sp. 



Cephalothorax fronte latus, et profunde excavatus, segmentum 

 anticum postice paulo latior, segmentis posticis latere ob- 

 tusis, utroque praecedenti angustiore, ultimo ad apicem dor- 

 salem poslicum spinigero. Antennae posticas ad articulum 

 primum setulosae, digito longo. Pedes natatorii primi paris 

 ramis triarticulatis, pedes postici ramis 3 et 1-articulatis. 

 Abdomen tenue, sine stylis, cephalothoracis dimidio brevius, 

 obsolete 5-articulatum. Styli abdomine longiore, tenuissimi. 



This species very much resembles C. mirahilis of Dana, which 

 was found in the Pacific Ocean. The chief differences are, the 

 deeper frontal excavation, and the three-jointed branches of the 



