Amph'poda Byperiidea collected by the ' Discovery? 217 



Stebbing (1904) quotes as a feature to distinguish this 



species from V. jeangerardi the fact that the second and third 

 Ural segments are coalesced. 



Chevrei.x (1900) has pointed out that in V.jermgerardi 

 lie second and third ural segments are fused in the centre, 

 but free at the edges— a fact which Stebbing (1904) corrobo- 

 rates and which is borne out by the specimens in the present 

 collection. l 



In V. propinqua, however, exactly the same thing occurs, 

 and from an examination of several species it would appear 

 that this partial fusion of the last two ural segments is of 

 ireqiicnt occurrence among different species of Vibilia. It 

 can therefore hardly be regarded as of any value as a specific 

 character. 



Distribution, North Pacific (Stebbing) ; S. Atlantic, Guinea 

 btream, and Sargasso Sea ( Vosseler) ; Bay of Biscay (Sub- 

 bing) ; West coast of Ireland (Tattersatt). 



Vibilia viatrix, Bovallius. 

 Vibilia viatrix, Bovallius, 1887 (i) & ( 2 ). 



Locality. Lat. 15° 14±' S., long. 33° 1H' W., Sept. 10th, 

 1901 (near Bahia), male and female. 



Bovallius (18S7), when describing- the species, remarks 

 that "the second and third ural segments are free not 

 coalesced"; and Stebbing (1888), in describing a sperimen 

 closely resembling that of Bovallius, constitutes a separate 

 species, V. viator, on the ground that it is distinct in having 

 the second and third ural segments fused. 



Among the forms in the present collection, however, which 

 agree in all other essential points with that figured and 

 described by Bovallius, we find the same peculiarity as in 

 V. propinqua and V. jeangerardi, i.e. the second and third 

 ural segments are fused at the centre, but free at the margins. 

 It will thus be seen that this character is of fairly common' 

 occurrence. 



Distribution. Very widespread. N. and S. Atlantic 

 tropical Pacific, and Indian Ocean {Bovallius) . Recorded bv 

 Stebbing (1888) from " Cape York." 



Vibilia jeangerardi, Lucas. 



Vibilia jeangerardi, Lucas, 1845. 



Vibilia jeangerardi, Marion, 1874. 



Vibilia jeangerardi, Bovalliua, 1887 (i) & (2). 



Locality. Off Madeira, one female. 



Chevreux (1900) has drawn attention to the partial fusion 



18* 



