REPORT ON THE BRACHYURA. 
49 
Ambulatory legs of moderate length, with the joints subcylindrical ; dactyli nearly 
straight, acute. 
The genus may be conveniently divided into two subgenera : — 
1. Herbstia, in which the inferior margin of the orbit is not dentated, and the 
. merus-joints of the ambulatory legs are not spinose. 
2. Herbstiella, Stimpson, 1 in which the inferior margin of the orbit is usually 
armed with a tooth or spine, and the merus-joints of the ambulatory 
legs have a series of small spinules. 
The species of the subgenus Herbstia are distributed as follows : — The typical species, 
Herbstia condyliata (Herbst), is common in the Mediterranean, in 20 to 40 fathoms 
(Heller), and has been recorded from the Canaries by Brulle ; two species, Herbstia 
ovata, Stimpson, and Herbstia rubra , A. Milne Edwards, occur at the Cape Verde 
Islands, the former, which Stimpson regarded as belonging to a distinct genus 
Micropisa , 2 in 20 fathoms ; a fourth species, Herbstia violacea, (A. Milne Edwards), 
has been recorded from Cape St. Vincent, Angola, the Cape Verde Islands, Goree 
Island, Senegambia (9 to 15 fathoms), and West Africa, the Gaboon; a fifth, Herbstia 
eryophora, Rochebrune, from Senegambia ; a sixth, Herbstia crassipes, A. Milne 
Edwards, from Australia, Bass Strait ; a seventh, Herbstia pubescens, Stimpson, from 
the west coast of Mexico, Manzanillo ; and an eighth, Herbstia pyriformis, Bell, type of 
his genus Rhodia , 3 from the Galapagos. 
The species of the subgenus Herbstiella, except the type Herbstia depressa, 
Stimpson, found at St. Thomas, and by the Challenger Expedition off the Brazilian 
Coast, in 30 to 350 fathoms, are all West American ; Herbstia camptacantha, Stimpson, 
occurs at Acapulco, on the west coast of Mexico, and at Cape St. Lucas, California.; 
Herbstia tumida, Stimpson, at Manzanillo, and Herbstia edwardsii (Bell), at the 
Galapagos. The habitat of the insufficiently known Herbstia ■ parviformis (Randall) is 
not particularly stated. 
Herbstia rubra, A. Milne Edwards (PI. VII. fig. 1). 
Herbstia rubra, A. Milne Edwards, Rev. Mag. Zoo!., ser. 2, vol. xxi. p. 354, 1869. 
St. Vincent, Cape Verde Islands (a small male) : — 
Adult 
Length of carapace and rostrum, 
Breadth of carapace, 
Length of a chelipede, nearly 
Length of first ambulatory leg, 
1 Ann. Lyc. Nat. Hist. New York, vol. x. p. 93, 1871. 
2 Proc. Acad. Nat. Sci. Philad., p. 217, 1857. 
3 Proc. Zool. Soc. Lond., p. 169, 1835 ; Trans Zool. Soc. Lond., vol. ii. p. 43, 1841. 
(ZOOL. CHALL. EXP. — PART XLIX. 1886.) ' Ccc 7 
Lines. Millims. 
9 11 
31 7-5 
5 10-5 
6i 14 
