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peduncle are not hidden by the rostral horn. In the cheliped 
the merus joint bears two strong projecting spines, besides the 
one at the distal end. The ambulatory legs are longer and 
slenderer, the penultimate being not so much expanded. The 
penultimate joint is more than three times as long as broad. 
Habitat, St. Vincent Gulf. Dredged by Dr. Verco. 
Length of carapace, 18 mm. 
Breadth of carapace, 13 mm. 
Length of rostral horn, 4 mm. 
Length of cheliped, 15 mm. 
Length of first ambulatory leg, 24 mm. 
One specimen, a female, in Adelaide Museum. 
I have referred this specimen to Mr. G. M. Thomson, of 
Dunedin, who has been good enough to examine it, with the 
result that it is here recorded as a variety of H. tumid its, 
Dana. 
Halimus gracilis, n. up. PI xxiii., tigs. 4, 4a. 
Carapace elongate, shrunken, anteriorly moderately de- 
pressed. The rostral horns are long, rather slender, very di- 
vergent, especially clistally, projecting forward horizontally. 
Tubercles of the carajoace not so numerous as in the preceding 
species : there are two inter-ocular, well marked, two trans- 
verse, with three longitudinal behind, on the gastric region, 
the last of which is almost obsolete ; four others laterally 
placed on the gastric region are also nearly obsolete, one on 
each epibranchial region, with one a little below and outward 
from each. The cardiac tubercle is single, and there is one 
on the intestinal, which is very close to the strong median 
spine of the posterior border. The rows of pits noticed in 
the other species are faintly marked. 
The supra-orbital border is thin, without anterior tu- 
bercle, the posterior end has a small acute point, the inter- 
mediate spine is short, and is situated much further from the 
post-ocular than from the point which precedes it. The post- 
ocular is longer than the other lateral spines, and projects 
well forward, the following hepatic spine projects horizon- 
tally, and is situated close behind on the prominent hepatic 
region, behind which the carapace is strongly constricted. 
The three lateral spines of the br^inchial region are well de- 
veloped, rather contiguous, each being curved forwards. 
The basal antennal joint is elongate, narrow, the oblique 
sulcation scarcely indicated. The external distal spine is 
rather short, scarcely showing from above, the remaining 
peduncular joints are not hidden by the rostral horn ; there 
is a small spine at the internal distal angle. 
The epistome is narrow and rather long. 
