Kingsley.] 150 [ March 5, 
Family PARTHENOPID. Sub-Family PARTHENOPINA. 
Genus LAmBRUS Leach. 
Lambrus granulatus sp. n. 
Carapax broader than long, everywhere granulate and with scat- 
tered tubercles; of these there are four in the median line, three on 
the cardiac region and the fourth on the posterior margin; four dis- 
tant ones on the branchial regions and an indistinct one on the 
hepatic region. Rostrum moderate, directed downward, the sides 
(inner borders of the orbits) elevated, extremity acute with a single 
tooth on each side at the base. Orbits with a distinct fissure above. 
Antero-lateral margin strongly angulated at about the middle, with 
about thirteen serrated teeth, of which seven are posterior to the 
angle; posterior tooth larger and stouter than the rest and directed 
slightly backwards. Posterior margin with three tubercles. Sub- 
hepatic and pterygostomian regions excavate as in L. crenulatus_ 
and laciniatus. Sternum granulate. Chelipeds long, surface every- 
where granulate; meros nearly triangular in section, bordered with 
large serrated teeth on the two upper margins and with smaller ones 
beneath; a tuberculate crest on the upper surface; carpus with two 
large teeth on the outside and a number of smaller ones on the inner; 
upper surface of hand without tubercles, superior and inferior mar- 
gins with fine teeth, outer margin with alternate large and small teeth; 
fingers strongly inflexed. Remaining feet slender, of moderate 
length. First segment of male abdomen with a transverse series 
of five tubercles. 
Tortugas, Fla., (9 faths.). Lieut. Jacques. 
Length of carapax, d, 8 mm.; breadth, 9 mm.; ratio, 1: 1.25. 
This form differs from ZL. Pourtalesit in the ornamentation of the 
carapax, the absence of a hepatic tooth, in the large number of mar- 
ginal teeth ; from Z. agonus in the angulated sides. 
It is nearest Z. crenulatus and would fall in the section which Dr. 
Stimpson has designated under the name Platylambrus.1 It is, how- 
ever, separated from this species by the more slender rostrum, the 
less prominenttooth at the lateral angle, the and smaller number of 
tubercles on the carapax; the regions also are not so well defined. 
1 Bulletin Museum Comparative Zoology, I, 129, (1871). 
