REPORT ON THE AMPHIPODA. 1279 



In regard to the eyes it may be noticed that Bovallius attributes to the species 

 Vibilia gracilenta " eyes large," and to the species Vibilia macropis " eyes very large, 

 occupying almost the whole sides of the head." The gnathopods and the first four pairs 

 of perreopods in this genus have the first joint arranged for containing gland-cells. 

 Many of the species, according to Bovallius, have the fifth and sixth segments of the 

 pie on free, not coalesced. 



Vibilia propinqua, n. sp. (PI. CXLVIL). 



Back round, smooth ; rostrum minute, sharp ; first segment of the pergeon very 

 short, with the front corners a little projecting forwards ; the postero-lateral corners of 

 the first three segments of the pleon rounded, very finely serrate ; the fifth and sixth 

 segments of the pleon completely coalesced dorsally, but less completely ventrally. 



Eyes long oval, vertical, narrowing below, wide apart ; the ocelli small, numerous. 



Upper Antennas. — Peduncle very short ; the first joint broader than long, on the 

 inner side overlapping the other two, which are very short ; the flagellum longer than 

 the peduncle, its broad flat joint scarcely narrowing till near the apex, where it is still 

 broad ; the length about twice the breadth ; along the centre of the inner surface are two 

 rows of filaments, in numerous small groups, not reaching to the apex, and round the 

 edge spinules are placed at regular intervals, the lower margin distally more or less 

 obbque, its tip concealing two minute joints. 



Lower Antennas inserted in a small notch of the head, very much narrower than the 

 upper and but little longer, with six free joints, the first about as long as broad, the 

 second not twice as long as the first, the third slightly longer than the second, the 

 fourth slightly longer than the third, the fifth equal to the first, the sixth nearly twice 

 as long as the fifth ; of these the first three are no doubt homologous with the third, 

 fourth, and fifth joints in the Gammarina, the first two joints of the peduncle being here 

 obscured by coalescence with the head, the opening of the gland-cone being at some 

 distance from the first free joint; the last three joints, constituting the flagellum, are 

 armed with spinules on the upper margin and taper to an almost acute apex, near which 

 the spinules are close set. 



Upper Lip. — Epistome broader than deep ; the distal border of the lip with a deep 

 but narrow emargination, from which two narrow rounded not quite symmetrical lobes 

 result, the cilia on the sides of the emargination overlapping ; the inner plate has a broad 

 nearly straight edge, furred with short cilia. 



Mandibles. — Cutting edge a little convex, with about fourteen little teeth ; the 

 secondary plate of the left mandible triangular, the distal edge cut into about a dozen 

 small denticles, resembling those of the principal plate ; the secondary plate of the right 

 mandible narrow, strap-shaped, apicaliy divided into a very few teeth ; in the spine-row 



