MUSEUM OF COMPARATIVE ZOOLOGY. 181 
typical form. This variety may be called Galacantha diomedew parvispina. At 
one station (3429) both forms were obtained at the same haul. 
This species differs from G. rostrata, areolata, spinosa, and talismanii in the 
rugose nature of the sculpture of the hinder half of the carapace. In the 
relative proportion of the anterior and posterior lateral spines it agrees with 
G. spinosa. 
Station 3357. — 782 fathoms, 1 female juv. 
OB te ore. re 3 males, 3 females ovig. 
E 18904 902 Y 1 female. 
ee OOOO 4007 t 3 males, 1 female ovig. 
BON y Ona t 5 males, 2 females (1 ovig.). 
mt IST, © 1 male. 
ua. 1020, O 3 males. 
Me 0805. | 380 — ^ 2 males, 1 female, 
* 3499. 919 “ 1 male. 
Var. parvispina. 
Station 3418, — 660 fathoms. 1 male. 
Du wre (IB 1 female ovig. 
See odad 010. S 1 male. 
St COIN 1-DIUT f l male. 
Tu O a OOD oV 18 males, 17 females (6 ovig.). 
n Bad BD 6 males, 4 females (3 ovig.). 
In both G. rostrata and G. diomedew there is a curious sexual difference. In 
the male the proximal half of the telson is furnished on each side with long 
amber-colored: sete, which are entirely wanting in the female. The same 
difference between the sexes is found in some species of Munidopsis. 
G. diomedeæ is often infested with parasites. One of the males from Station 
3371 bears a Peltogaster, while seven specimens (5 males, 2 females) of var. 
parvispina house a Bopyrus in the left branchial chamber. 
The eggs of this species measure 3 X 2.5 mm. 
Munidopsis! vicina, sp. nov. 
Near M. ciliata Wood-Mason, from which it differs as follows. Tt is'a very 
much smaller species, the adult ovigerous female being only twenty-nine milli- 
meters long; the anterior margin of the propodus of the ambulatory appen- 
dages bears two very prominent spines. The telson lacks the pair of long and 
narrow plates which lie on each side of the small central plate in M. ciliata, 
As in M. ciliata, the carapace is covered with squamous tubercles, the rostrum 
is curved slightly upward, and the chela is short, 
Length, 29 mm. ; breadth, 9.5 mm. 
Station 3360. 1672 fathoms. 1 female. 
ap Og. i 1 female ovig. 
1 The genus Munidopsis, as here understood, includes Galatodes, Orophorrhynchus, 
and Llasmonotus of A. Milne Edwards, and Anoplonotus of Smith. 
