302 MR. A. O. WALKER ON THE 
Not previously recorded in the Mediterranean. The quantity 
of pigment in this species is remarkable; the above specimen 
coloured a mixture of spirit, glycerine, and water in the tube 
3 in. deep by 2 in. diameter, deep yellow. 
Fam. LEvcoTHOID®. 
Genus LEUCOTHOE. 
L. sprnicarpa (Abildgaard). 
St. 4a. Three young. 
Ji. EURYONYX*,n. sp, (PI. 27. figs. 24-26.) 
St. 6. Three (?) young. Length 1:75 mm. 
Body moderately compressed ; first four coxal plates not quite 
as deep as the segments, the Ist expanded downwards, 2nd, 3rd, 
and 4th quadrate with rounded angles. Last epimeral plates of 
metasome notched above the posterior angle. 
Head: upper margin exceeding that of the 1st segment of the 
raesosome by the length of the rostrum which is about one- 
third of the total length of the head; eyes small, round. 
Upper antenne as long as the head and first three seg- 
ments; first joint of the peduncle about one-fourth longer than 
the second, which is about twice as long as tke third; flagellum 
3-jointed, about as long as the second joint of the peduncle. 
Lower antenne reaching a little beyond the end of the 
peduncle cf the upper; second joint of the peduncle about one- 
third longer than the last, which is rather longer than the 
3-jointed fagellum. No setz on either pair of antenne. 
First gnathopods: carpal process slightly curved and gradu- 
ally tapering to a point, not quite reaching the end of the 
propodos, the margins of which are parallel; dactylus about 
one-third the length of the propodos, slender and recurved near 
the point. 
Second gnathopods: the carpal process, which is hollowed to 
receive the lower margin of the hand, reaches a little beyond the 
palmar angle of the propodos; it is fringed beneath with rows 
of sete and is toothed at the distal end. The propodos has the 
antericr margin rather concave towards the apex, and produced 
considerably beyond the insertion of the dactylus, which is 
unusually short and wide; the minutely denticulate palm is 
* “Wide-nailed,”’ in allusion to the short, broad dactylus of the 2nd 
gnathopod. 
