129- 
and grooved above, the propodal joints are cylindrical, the 
dactyli are curved, strong, and without spinules. 
Length of carapace, 10 mm. 
Breadth of carapace, 8 mm. 
Length of cheliped, 7 mm. 
Dredged by Dr. Verco, S.A. coast, 20 fms. 
Specimens in Adelaide Museum. 
Family Parthenopid.e. 
Genus Tli iirnJjnnhrKs^ Rathbun. Pr. U.S. Mus., vol. xvii. 
Thyrolambrus excavatus, n. n-p. PI. xxiv., fig. 7. 
The Vkdiole of the body is covered with irregular granules, 
forming in parts jagged points, becoming more or less spini- 
form on the ambulatory legs. 
Carapace triangular, broader between the lateral angles 
than long, jjroducecl to some extent over the bases of the 
chelipeds and first two pairs of legs. Surface much eroded, 
being covered with irregular granules, for the most part con- 
nected together by small ridges, forming somewhat stellate 
reticulations. The regions are well defined, those most in 
relief are the protogastric and branchial, and most depressed 
the meta-gastric and iiTtestinal. The meta-gastric depression 
extends laterally to the margin behind the hepatic region, 
and posteriorly between the cardiac and branchial to join the 
intestinal, though becoming shallower. The branchial re- 
gions are tri-lobed, the lobes arranged in a triangular man- 
ner, the apex forming the lateral angle of the carapace. Of 
these three lobes the anterior une is the largest. The hepatic 
region is small and depressed. The epi-gastric region has a 
deep median excavation, between which and the front is a 
shallow median groove, which is continued behind the cavity, 
bifurcating in front of the meso-gastric region to 
join the meta-gastric depression. The meso-gastric 
region is triangular, and behind it the median por- 
tion of the carapace, after being a little depressed, becomes 
gradually elevated again at the cardiac region. This has on 
each side two or more irregular transverse ridges connecting 
it with the meta-branchial lobe, and posteriorly it is abrupt 
to the intestinal depression. The sides of the carapace are 
very declivous, and below the antero-branchial lobe there is 
a slight excavation, beneath which the margin expands to a 
ridge immediately above the chelipeds, bearing some spini- 
form tubercles and uniting anteriorly with the pterygostomial 
ridge. The latero-posterior and posterior margins are nearly 
in the same transverse line, the former slightly insinuate, 
bearing some obtuse points, especially at the junction with 
