BRACHYURA. 379 



Walking legs are smooth beneath the hairs. W.L.l.L-f-C.l. = 174 ; W.L.2.1.-rC.l. 

 = 1-17 ; W.L.3.1. + C.1. = 1-00 ; W.L.4.1.-5-C.1. = 0'91. The dactylopodite of walking 

 leg 1 is almost straight, denticulate, and about half as long as the propodite. The 

 dactylopodites of walking legs 2, 3, and 4 are curved, spinulous, and about the same 

 length as the propodites of the same appendages. 



C.I. C.b.-i-C.l. Ch.l.-rC.l. Propusl.-f-C.l. Arm 1. -=- C.I. H.I. (up. bord.)^-C.l. F.I. (up.bord.)-hC.]. 

 11-5 078 1-20 0-59 0'52 0'33 0'22 



Arm length is measured along under surface from proximal end of ischium to tip 

 of outer distal tubercle. Ch.l. = sum of arm 1. and a line uniting outer distal tubercle 

 of arm to tip of fixed finger when elbow is bent at a right angle. Propus 1. is 

 measured along lower border by a straight line uniting the proximal tubercle to the 

 tip of the fixed finger. 



Remarks. This species may be recognised by the character of its orbital border. 



The bilobed character of its supra-ocular eave is a point of resemblance to Halimus 

 verrucosipes and Halimus gracilirostris. 



The denticle on the anterior border of the post-ocular tooth is referred to under 

 H. irami, n. sp. 



Halimus irami, n. sp. Plate I., figs. 4, 4a. 



Locality : Muttuvaratu Paar, two specimens an ovigerous ? (a) and a Sacculina- 

 infested male (6). 



Description of Ovigerous Female. Body and legs tomentose. Carapace sub- 

 pyriform ; the regions are defined, not very distinctly, by shallow grooves ; the grooves 

 defining the hepatic region are well marked ; the gastric region shows a fairly 

 prominent convexity. The denuded carapace is seen to be pitted, the pits well apart. 

 The only protuberance on the carapace is a small epibranchial tubercle near the hinder 

 limit of either branchial region. The rostral spines are 0*50 the length of the carapace 

 (0'60 in the male example), fringed with a row of hairs on either side ; the distance 

 between their tips is 0*90 the length of one of them ; though sloping obliquely 

 downward, their slope is less inclined than that of the anterior surface of the carapace 

 (in the male their slope is more oblique, in the same plane as that of the carapace). 



The supra-ocular eave is produced anteriorly into a strong triangular tooth ; at the 

 base of the post-orbital tooth, between it and the supra-ocular eave, is a small tooth 

 (it varies in position in the two specimens, as will be remarked later). 



The antennal flagellum consists of about eight elongated segments, from the joints 

 between which arise a few isolated stout hairs ; it is damaged in this specimen, in the 

 male it just falls short anteriorly of the tip of the rostral spine. 



The outer anterior angle of the basal antennal segment is produced anteriorly into 

 a stout tooth, visible from dorsal view, the outer border is a little convex ; to the outer 

 side of the aperture of the green gland is a compressed tubercle ; behind the latter the 



3 c 2 



