508 
MB. H. N. RIDLEY ON THE 
Mithrax (Teleodhrys) cristulipes ( Stimpson ). 
1862. Teleophrys cristulipes, Stimpson, Ann. Lyc. Nat. Hist. vii. p. 190 
pi. ii. fig. 2. 
1881. Teleophrys cristulipes, A. M. -Edwards, Miss. Sci. Mex. {Crus- 
tacea), p. 113, pi. xix. fig. 2. 
"Regions of the carapace defined by shallow sulci. Superior 
surface of body and limbs tubercular, inferior surface smooth. 
Carapace broader than long, beset with low, inconspicuous, 
scattered tubercles which vary in distinctness. The principal 
tubercles arranged as follows : — two or three on each half of the 
rostrum between the superior orbital prominences, one on each 
side of the middle line at the base of the rostrum, two in longi- 
tudinal series on each side of the gastric region, several on the 
branchial regions, and three on the anterior lateral margin of 
each. Orbit furnished in front with a superior and an inferior 
blunt prominence. Not furnished with spines or prominences 
behind. 
Bostrum short, broad, with upturned anterior margin, not deeply 
bifid, marked above with central sulcus, and separated on each 
side from the superior orbital prominence by a conspicuous de- 
pression. Its anterior margin projecting slightly beyond the 
middle of the basal segment of the antennae and slightly in front 
of the inferior orbital prominence. 
Chelipedes large ; merus tubercular above and furnished below 
in front with three large, rounded, compressed teeth ; carpus 
furnished above with four or five tubercles, and with one blunt 
tooth in front. Hand smooth ; its distal portion compressed 
above and below into a crest. Dactylus and pollex meeting only 
at the apices. Dactylus furnished with a single tooth. 
In the first pair of legs the merus is furnished above with two 
longitudinal raws of prominences, the posterior row consisting of 
lower rounded tubercles, which distally decrease in size, the an- 
terior row of five higher, compressed, sharper teeth, which distally 
increase in size ; distal margin of the segment produced into five 
rounded prominences, varying in size ; the carpus, in addition to 
three or four low tubercles on its centre, with its distal margin 
furnished with a larger anterior and a smaller post erior tubercle ^ 
and its antero-superior surface with a larger proximal and a 
smaller distal tooth ; propodos furnished above with two tubercles, 
one near the centre, the other at its distal margin ; claw long, 
curved, hairy below, with its distal portion serrate below. 
