114 
MR. A. O. WALKER OX A COLLECTION' 
Carapace ovoid, rather convex, with scattered hairs, and coarsely 
granulated. A. long spine on the posterior gastric and another 
on the cardiac region in the central longitudinal line, with a 
shorter spine at each side of its termination on the posterior 
border. A long spine on the branchial region. Rostrum with 
tw o divergent spines about two sevenths of the length of the 
carapace and fringed with long hairs ; beneath this the edge of 
the carapace is produced into a tooth bent downwards at a right 
angle. The basal joint of tire outer antennae is furnished with 
two spines, the shorter pointing downwards and the longer out- 
wards. The lower orbital margin has a group of four tubercles 
about the centre. The upper orbital margin has a concave pro- 
cess or hood covering the inner orbital angle, and produced out- 
wards into a long spine ; there is a similar and parallel spine at 
the outer angle, and a small spine between the two. These arc 
followed by five marginal spines, increasing in size to the last, 
which is equal in length to, and some distance in front of, the 
spine on the branchial region. The underside is coarsely granu- 
lated. The chelipedes in the male are shorter than the second 
pair of legs, and are slender, rounded, and very smooth. The 
hand to the base of the fingers is as long as the wrist, and about 
the same thickness. The fingers slender and without teeth, 
meeting at a short distance from the point. The remaining legs 
are moderately long (the second pair reaches slightly beyond the 
rostrum) and covered with long hairs. Length of carapace, 
exclusive of rostrum, lyL in. ( = 3 3 centim.). Width behind 
posterior marginal spines, lfV in. 
Doclea tetraptera, n. sp. (Plate YI. figs. 4-8.) 
Carapax pyriformis tomentosus ; spina media posterior magna 
duplex. Pedes ambulantes alis fimbriatis instructi. (Coll. Brit. 
Mus.) 
Carapace pyriform, having eight spines on the median line, of 
which the first (a little behind the eye), third, and seventh are 
very small. The last spine on the posterior margin is very large 
and double, the smaller branch pointing upwards and the larger 
backwards. Four spines on the lateral margin, the foremost 
being close to the outer angle of the buccal orifice, and smaller 
than the three following. A large spine on the meta branchial, 
and a smaller on the epibranchial, region. Rostrum horizontal, 
about one fifth of length of remainder of carapace, with short 
divergent spines at the tip. The whole of the carapace covered 
with a dense pubescence, the hairs of which are slightly thickened 
