196 
THE VOYAGE OE H.M.S. CHALLENGER. 
Thalamita intermedia, n. sp. (PL XVI. fig. 1). 
The carapace is broadly transverse, and is covered with a close, whitish pubescence ; 
the transverse ridges which cross its dorsal surface are not more distinct than in Thala- 
mita admete, to which species and to Thalamita savignyi, Thalamita intermedia is nearly 
allied. Of the six lobes of the front the median are smallest, and separated by a narrow 
and rather deep incision; the submedian and lateral are subequal, the latter slightly 
overlapping the former; the lateral lobes project somewhat less than the others. The 
orbits have two distinct fissures in the upper and one in the lower margin. The five spines 
of the antero-lateral margin are all well developed, but the three anterior are very slightly 
larger than the fourth and fifth. The basal antennal joint is very distinctly granulated ; 
the maxillipedes present nothing remarkable. The chelipedes in the male are subequal, 
the merus or arm with three spines on its anterior margin, of which the two nearest to the 
distal extremity are largest ; wrist with a strong spine on its inner margin and three small 
spinules on its outer surface ; palm with three or four spines, disposed alternately in two 
series, on its upper surface, and with three granulated ridges on its outer surface, between 
which are other granules, as in Thalamita savignyi ; the fingers are somewhat shorter 
than the palm, and irregularly denticulated on their inner margins ; the ambulatory legs 
slender and slightly compressed ; the fifth legs, shaped much as in Thalamita admete 
and Thalamita savignyi, with a spine near the distal end of the inferior margin of the 
merus-joint, and with the inferior margin of the penultimate joint armed with a very 
distinct series of small spinules. Colour (in spirit) pinkish-brown ; pubescence whitish. 
Adult £ • 
Lines. 
Millims. 
Length of carapace, nearly 
6 
14 
Breadth of carapace, .... 
10 
21 
Length of a chelipede, .... 
13 
27-5 
Length of first ambulatory leg, . 
12 
25 
The unique specimen (a male) was dredged in the Torres Strait, in 8 fathoms, lat. 
10° 30' 0" S., long. 142° 18' 0 " E. (Station 186). 
Thalamita sexlohata, n. sp. (PI. XVI. fig. 2). 
The carapace is transverse and closely pubescent ; the transverse ridges of its dorsal 
surface distinct but not prominent. The median lobes of the front are slightly rounded, 
smaller than the submedian lobes, and are separated by a small and shallow notch, the 
submedian are broader than either the median or lateral lobes, and slightly overlap the 
former, from which they are separated by a scarcely appreciable notch ; the lateral lobes 
are separated from the submedian lobes by a rather wide interspace, and are not very 
prominent, their inner margin is continued as an oblique carina for a short distance 
behind the frontal margin. The upper margin of the orbit is marked with two fissures, 
and the lower margin with a small notch. The antero-lateral marginal teeth (the fourth 
