ANAMATHIA OCCIDENTALIS. 9 
one in the middle of the cardiac region; one (tubercle) on the intestinal 
region; one on each hepatic region; five on each branchial region. Of the 
branchial spines the one near the middle projects upward and forward, and 
is the longest spine on the carapace, being one half as long as the rostral 
horns; behind and inside of this there is a short, rather blunt spine in a 
transverse line with its fellow and the cardiac spine; the three remaining 
branchial spines are arranged in a triangle on the anterior part of the 
branchial area; those nearest the median line on the branchial areas are 
short and blunt — tubercles rather than spines. In addition to these promi- 
nent spines and tubercles of the carapace, there are four or five small 
tubercles on the outer border of the pterygostomian region. The rostrum is 
produced into two divergent awl-shaped horns, which are more than one 
fourth the length of the remaining portion of the carapace. The pre- 
ocular spines are well developed and acute, the postocular processes obtuse. 
The basal segment of the antenna projects at the antero-external angle in 
the form of a short, blunt spine or tubercle. The antero-external angle of 
the buccal area projects, but does not form a dentiform process. The cheli- 
peds are twice as long as the carapace, minus the rostral horns, and are but 
little more robust than the ambulatory limbs; the chela is a little longer 
than the merus, the basal part cylindrical, the distal part gradually widening 
a little to the base of the fingers; the fingers are slightly curved, less than 
one half as long as the basal portion, smooth, prehensile edges regularly 
dentate, closing throughout their length. The first ambulatory appendages 
exceed the chelipeds by the length of the terminal joint; the other pairs 
are successively shorter, the last pair being shorter than the chelipeds. 
The merus of all the legs has a small tubercular projection at the distal end 
above, most prominent on the anterior pair. The carpus of the chelipeds 
has two low ridges on the outer face; otherwise the legs are unarmed, but 
they are closely invested with minute papille, like the carapace. The 
abdomen is seven-jointed. 
Length of carapace, without the rostral horns, 45 mm.; breadth of cara- 
pace, 38 mm.; length of rostral horns, 12 mm. ; length of longest branchial 
spine, 7 mm. 
Station 3404. 385 fathoms. 1 male. 
In the unique type specimen, the left hind leg has been broken off and 
restored. The chelipeds and the first pair of ambulatory appendages are 
unsymmetrical, the left being longer than the right. 
9 
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