130 
THE VOYAGE OF H.M.S. CHALLENGER. 
gastric and branchial regions ; and the first and second teeth of the antero-lateral margins 
are less distinctly separated than in larger specimens, but in other particulars it agrees 
well with the description of Saussure. 
$ . Lines. Millims. 
Length of carapace, nearly ...... 3 6 
Breadth of carapace, . . . . . . . 4 8‘5 
Micropanope , Stimpson. 
Micropanope, Stimpson, Bull. Mus. Comp. Zool., voL ii. p. 139, 1870. 
„ A. Milne Edwards, Crust, in Miss. Sci. au Mexique, pt. 5, p. 324, 1880. 
I have examined no specimens of this genus except the one in the Challenger 
collection, referred below to Micropanope spinipes, A. Milne Edwards ; I must, therefore, 
express myself with some hesitation upon its limitation, but j)robably it may be 
conveniently restricted to those (usually deep-water) species which are enumerated and 
figured by A. Milne Edwards, and which are distinguished from Panopeus and Eury- 
panopeus by the more or less distinctly spiniform teeth of the antero-lateral margins, 
and by the spiniferous ambulatory legs. In the former character, and in the granulated 
or spinuliferous palms of the chelipedes, and in their small size, these species resemble 
Pilumnus. In the single specimen examined, there exists no ridge upon the endostome 
or palate. 
Of these species, four, Micropanope sculptipes, Stimpson ; Micropanope pugilator, 
A. Milne Edwards ; Micropanope pusilla, A. Milne Edwards, and Micropanope lobifrons, 
A. Milne Edwards, have been dredged at various West-Indian localities, and in the 
Florida Straits, in depths varying from 15 to 170 fathoms; one species, Micropanope 
spinipes, A. Milne Edwards, occurs at the Abrolhos, Brazil, in 30 fathoms, and at Bahia, 
in shallow water. 
j 
' ; ,y 
Micropanope spinipes (?), A. Milne Edwards. 
? Micropanope spinipes, A. Milne Edwards, Crust, in Miss. Sci. au Mexique, pt. 5, p. 326, 
pi. liv. fig. 2, 1880. 
I thus designate, though with some hesitation, a male obtained at Bahia in shallow 
water, associated with Pilumnus jloridanus and Pilumnus fragosus. 
This specimen agrees in the proportions of the carapace and limbs, and particularly 
in the absence of granulations or spinules on the outer surface of the palms of the 
chelipedes, with Milne Edwards’ description and figure of this species (the only one of the 
genus recorded from the Brazilian coast), but it is distinguished by having the first of 
the antero-lateral marginal teeth well developed and perfectly distinguishable from the 
