BRACHYURA. 387 



specimen (ovigerous ? ) ; Gulf of Manaar, three specimens (one adult $ and two 

 young <?). 



Description : All the specimens have their walking legs folded beneath them, in 

 which position the expanded meropodites, together with the retroflected tip of the 

 rostrum, enclose a space beneath the body and help to give the animal a rounded 

 ball-like appearance. The space referred to is widely open posteriorly, where a 

 considerable squarish gap is left between the members of the last pair of walking legs. 

 Slits remaining between the successive legs of either side are more or less occluded 

 tiy fringes of hair which border the appendages. 



A variable character to note is the size of the innermost of the three branchial 

 tubercles ; in none of the specimens, however, does this exceed two-thirds of the size 

 of the two outer tubercles. 



Micippa parca, ALCOCK, 1895 A.1, p. 253 ; A. Invest., pi. xxxv., fig. 4. 



Locality : Coral reefs, Gulf of Manaar, one specimen. 



Description: C.I. = 1 1 '25 (a straight line uniting base of the median posterior spinule 

 with the middle point of a faint inter-ocular groove) ; C.b. -s-C.l. = 0'98 ; Inter-orbital 

 b. -j-C.l. = 0'58 (inter-orbital breadth is measured by a straight line uniting the 

 notches made by the junction of pre-ocular spinule with supra-ocular eave of either 

 side) ; breadth between the bases of the mobile portions of the antennae -r- C.I. = 0'36 ; 

 Arm L-rC.l. = 0-42; H.L-5-C.L = 0-38. 



The present specimen of M. parca differs from Micippa margaritifera, to which it 

 is closely allied, in the following particulars : 



(1) The median region of the posterior border of the carapace is occupied by a 

 group of spinules (three in a transverse row) instead of by a single pearl-like tubercle ; 

 (2) the post-cardiac cluster of granules and the cluster on either side of it are but 

 slightly indicated ; (3) the gastro-cardiac groove is more distinct ; (4) the difference 

 in size between the inner branchial spinule (a mere rudiment not a real spiuule) and 

 the two outer ones (well developed) is more marked ; (5) the meropodites of the 

 walking legs are still more expanded, which is largely due to the greater foliation of 

 their posterior borders ; their distal borders are finely and fairly regularly toothed ; 

 (6) the walking legs are less hairy ; (7) the upper portion of the outer surface of the 

 hand is granular. 



Lambrus (Lambrus) longimanus, LEACH, 1815 A.1, p. 260. 



Localities : Galle, three specimens (c, e, g) ; pearl banks, Gulf of Manaar, four 

 specimens (a, 6, d,f). 



Description : (a) young ? . (b) young ? . (c) young $. (d) young <J. (e) young <?. (/) adult g. 

 C.I. (rost. included) 11-50 17'50 975 12-00 17'50 25'50 



C.b. ^ C.I. ... 1-04 1-01 1-50 I'OO 1-11 1-12 



Ch.L-s-C.1. . . . 3-22 3-31 3-10 3'25 3'64 4 '40 



3 D 2 





