REPORT ON THE AMPHIPODA. 1295 



12. "August 23, 1874, New Hebrides," between Stations 179 and 180, lat. 15° 58' 

 and 14° 7' S., long. 160° 48' and 153° 43' E. One specimen. 



13. "August 25, 1874, Api to Cape York, surface"; Station 181, Jat. 13° 50' S., 

 long. 151° 49' E. One specimen. 



14. " Cape York " ; lat. 10° 30' S., long. 142° 18' E. One specimen (Vibilia viator). 



15. " Pacific." One specimen. 



16. " April 4, 1875, off Volcano I., Pacific, surface " ; between Stations 229 and 230, 

 lat. 22° 1' and 26° 29' N., long. 140° 27' and 137° 57' E. Four specimens (Vibilia 

 propinqua). 



17. Station 245 ; lat. 36° 23' N., long. 174° 31' E. One specimen. 



None of the Challenger specimens are as much as half an inch in length. The 

 largest species yet recorded appears to be Vibilia edwardsii, Spence Bate, from the 

 southern Orkneys, the length attributed to this species being three-quarters of an inch. 

 Vibilia kroeyeri, Bovallius, from Greenland, has -a length of 12 mm. Vibilia 

 jeangerardii, Lucas, from the Mediterranean, is 10 mm. long. Vibilia borealis, Bate 

 and West wood, from Banff, is seven -twentieths of an inch in length, but neither the 

 size nor the colour nor any of the details given seem sufficient to distinguish this 

 species from that named by Lucas. The figure and description of Vibilia affinis, 

 Spence Bate, from Java, are also, I think, insufficient for any specific determination. 

 Except in the absence of colour markings, the specimens from various stations in the 

 Atlantic differ but little from Vibilia jeangerardii, Lucas, and the colour markings 

 may have disappeared during the ten or twelve years that the specimens have been 

 preserved in spirit. Vibilia edwardsii, Spence Bate, and Vibilia longipes, Bovallius. 

 differ from the rest of the group by the great disparity in length between the second 

 and fourth peraeopods, and Vibilia pyripes, Bovallius, from " tropical parts of 

 Atlantic," is distinguished by having the " telson round, very broad, longer than last 

 peduncles." 



Family Cyllopodid^e, Bovallius, 1887. 



The family is defined by Bovallius as follows : — 



" Head globular ; eyes large, occupying almost the whole sides of the head. First 

 pair of antennae fixed at the anterior side of the head, with the first joint of flagellum 

 tumid, conical ; second pair fixed at the inferior side of the head, angulated. Mandibles 

 with palp. Dactyli of seventh pair of pereiopoda [fifth perseopods] transformed." 



It may be questioned whether there was any pressing necessity for separating the 

 single genus included in this family from the neighbouring Vibilidse, a family which is 

 itself as yet not overcrowded with genera. Mr. Spence Bate indeed is so much impressed 

 with the likeness between Vibilia and Cyllopus as to say of the two genera, that " had 



