REPORT ON THE AMPHIPODA. 735 



Andania hoecki, n. sp. (PL XXXVI.). 



The head almost concealed beneath the overhanging first segment of the perseon ; the 

 first three segments of the pleon longer than any of the perseon except the first, their 

 postero-lateral angles not acute, yet scarcely rounded ; the second, third, and fourth 

 segments with a transverse dorsal depression, the second and third with small spines 

 along the lower margin ; the animal more elongate in proportion to its depth than 

 Andania gigantea ; the integument showing prismatic hues in spirit, much or all of it 

 covered with hexagonal markings. 



Eyes not perceived. 



Uj)per Antennse. — The three joints of the peduncle very short and thick, the first as 

 long as the other two, the third being shaped as in the preceding species ; the flagellum 

 of fourteen joints, the first longer than the rest united and longer than the peduncle, 

 very broad at the base, tapering, bordered with a thick brush of cylinders in about sixty 

 broad rows, serrate towards the distal end and armed with long spines ; the other joints 

 have distal rows of spinules ; the secondary flagellum is nearly as long as the first joint 

 of the primary, in the channelling of which it is lodged ; it is strongly curved, ribbon-like, 

 fringed with setules or spinules, and carrying at the apex some very long spines ; there 

 may be a minute second joint. 



Loiver Antenna; considerably longer than the upper. First three joints very short, 

 gland-cone small, decurrent, blunt ; fourth joint longer than the preceding three united, 

 tvith several setse on the surface and lower margin ; fifth joint more than twice as long as 

 the fourth, thickest at the base, its upper side covered with fine hairs ; flagellum of more 

 than twenty-five joints, the first the longest, the distal margins of the first eighteen 

 oblique. 



Epistome carinate ; upper lip with two unsymmetrical lobes, which in the Plate are 

 folded back, but whether that represents their natural position, I cannot say for certain. 



Mandibles. — The cutting edge of great breadth, with a small denticle at the top and 

 with a much smaller just l^elow, and a sort of tooth on the upper margin behind it ; the 

 edge itself is scarcely convex, drawn out below into a blunt tooth ; the lower margin is 

 cut into fine teeth or serrations for a short space ; it then presents a forward-directed 

 tooth, from which a curved beaded line runs up the surface, the margin itself forming 

 two overlapping curves ; this applies to what is apparently the left mandible ; that which 

 I suppose to be the right is rather shorter, otherwise very similar, l)ut without tlie 

 prominent tooth of the lower margin, having on the other hand on the surface near tlie 

 lower apical tooth a curved groove or fold of the integument suggestive of an inchoate 

 secondary plate ; moreover, near the inner angle of the lower margin there is a small 

 opening in the integument from within which issues a seta ; at the inner corner of the 

 upper margin each mandible has what appears to be an articulating process. 



