PANULIRUS. 107 
ternal margin of the merus at its point of articulation with the carpus. 
Carpus triangular, unarmed. Chela with sharp upper and lower margins; 
upper margin with five to seven spines, inner and outer faces with a few 
scattered spinules; fingers with denticulate prehensile margins and curved 
crossed tips. Second pair of legs also chelate, but the chela is small. The 
remaining pairs of legs are not chelate, the dactyli curved, slender, and 
acute. 
The first abdominal appendages are modified for copulatory purposes ; 
they are composed of a basal stem which bears an expanded terminal plate 
concave on its inner face (Plate XXVIL., Fig. 1%). The second abdominal 
limb consists of a basal stem which carries a three-jointed inner and a mul- 
tiarticulate outer branch; at the proximal end of the second joint of the 
inner branch is a minute blunt process (stylamblys of Bate). The three 
following pairs of abdominal appendages are made up of a stem and two 
terminal branches, the inner of which bears a rather long and slender styl- 
amblys. The last pair of abdominal appendages, or swimmerets, are broad ; 
both branches have a longitudinal median rib, and the outer branch is 
divided near the tip by a suture that runs diagonally from the external 
margin to the posterior margin; along this suture are seen articulated 
spinules, and there is also an unarticulated spine on the external border of 
the inner plate near the distal end. 
For the branchial formula, see p. 105, under the generic diagnosis. 
Length of carapace, 22.2 mm.; rostrum, 5.56 mm.; abdomen, 30 mm. ; 
cheliped, 39 mm.; merus of cheliped, 14 mm.; chela, 17 mm. 
Station 3418. 660 fathoms. 9 males, 
Famity PALINURIDZE. 
PANULIRUS Gray. 
List Crust. Brit, Mus., p. 69, 1847. 
Panulirus sp. 
A small specimen of Panulirus, 23 mm. long, was taken at Station 3354, 
322 fathoms. It is too young to show its specific characters. 
The only other representatives of this family found in the collection are 
seven specimens in the Phyllosoma stage. 
