BARBADOS-ANTIGUA REPORTS 93 
ing with the fifth and sixth somites a striking and unique, operculiform 
disk, troughed within its distal half around the circumference and mar- 
gined with a continuous thick fringe of hair; apparently to lock the 
elements of the disk together; the proximal half of the outer margin of 
the sixth somite carries two blunt prominences between and below which 
is a third more tooth or spine-like projection for the purpose of en- 
gaging the outer margin of the outer branch of the uropods. 
From Lockington’s U. rugosa, our species differs in the armature of 
the rostrum, and the extent of the tuberculation of the anterior portion 
of the carapace; U. rugosa has the ‘‘upper surface of rostrum and cara- 
pax, to about half way to the dorsal suture, beset with small tubercles 
and hirsute; and what is probably more significant, the dactylus seems to 
have been longer than the ‘‘pollex’’ in Lockington’s species though his 
description is not wholly clear on this point: ‘‘dactylus less than half 
the length of the palmar portion of the hand which is thickly hirsute, 
curved, regularly downwards, its tip passing beyond that of the dactylus 
[pollex?].’’ It is apparently on the basis of this character that Bor- 
radaile19 placed this species in the subgenus Upogebia. Surely it is a 
19 Ann. Mag. Nat. Hist., (7), XII (1903), p. 543. 
Gebiopsis. Lockington does not mention a small tooth on the fore edge 
of the carapace over the antennae in describing his species, though he 
was well aware of its occurrence in the genus (cf. his remarks op. cit., 
p- 300, on Gebia (Upogebia) longipollex Streets.) The relative length of 
the fingers of the Upogebias is so variable that it can scarcely be con- 
sidered of having much weight even as a subgeneric character. 
It would be interesting to know the application of the ‘‘operculum’’ in 
our species and Lockington’s, the former are, as noted above, from Okra 
reef, Barbados, the latter from ‘‘under stones and coral at low tide Port 
Escondido, Gulf of California, August, 1876.’’ 
The carapace of the male holotype including the rostrum is 8 mm. 
long, anterior portion before the cervical groove and also including ros- 
trum 4.5 mm.; abdomen and telson 14.5, telson 3.5 mm. long. 
Glypturus brannert Rathbun 
Glypturus brannert Rathbun, Proc. Wash. Acad. Sci., II (1900), p. 150, 
pl. 8, figs. 5-8—Bull. U. 8S. Fish Comm., XX, pt. 2, 1900 (1901), 
p. 93.—Rapport van de Visscherij en de Industrie van Zeeproducten 
in de Kolonie Curagao, uitgebracht door Prof. Dr. J. Boeke, pt. 2, 
(1920), p. 328 [12], text fig. 3. 
Pelican Island, Barbados, shallow, May 14; one specimen. 
? Glypturus acanthochirus Stimpson 
Glypturus acanthochirus Stimpson, Proc. Acad. Sci., Chicago, I (1866), 
p. 46. 
Barbados, from coral head, June 4; one small specimen about 
19.5 mm. long. 
The one hand remaining, apparently the larger is not spined 
