43 
Planes minutus {Linn.). 
1758. Cancer minutus, Linn., Systema Naturae, Ed. 10, 
Vol: I., p. 625: 
1803. Grapsus minutus, Latreille, Hist. Nat. Crust. et Ins., 
Vol. Vi... pe 6S: 
1837. Nautilograpsus minutus, Milne-Edwards, Hist. Nat. 
Grust., Vol; IFS p-.9e: 
1875. Planes linnaeana, Sowerby, in Leach’s Malac. Podophth. 
Brit... Ely 27, tie: 3: 
1886. Nautilograpsus minutus, Miers, Challenger Brachyura, 
Reports, Vol. XVII., p. 254. 
The ‘“ Challenger ” collection included specimens from many 
and distant localities. After enumerating these, Miers says, 
“Specimens of this genus show a considerable degree of varia- 
tion in the convexity of the carapace, the development of the 
antero-lateral marginal tooth, which is sometimes obsolete, 
in the coloration of the body and limbs, etc., but I cannot 
find any valid characters for the distinction of the numerous 
supposed species which have been described by authors.” 
For the synonyms he refers to Kingsley, Proc. Ac. Philad., 
p. 202, 1880. 
In regard to the specimens sent me from South Africa, 
Dr. Gilchrist wrote, “‘ Five out of six crabs found on a piece of 
wreckage in False Bay in December last. They have a very 
characteristic patch of white porcelain-looking colour on the 
back. As you will see, this patch varies considerably in 
outline. The rest of the animal was of an uniform reddish 
colour, which seems to me to be turning somewhat black in 
the spirit.” 
The largest of the five measures 19 mm. down the centre of 
the carapace, the greatest breadth being 18°5 mm. 
Another specimen, found on the shore at False Bay, had 
originally a pretty and delicate lilac blue tint, according to a 
coloured drawing of it, which Dr. Gilchrist kindly sent me. 
Since Miers speaks of specimens being found attached to 
lanthina, the suggestion may be hazarded that this species is 
sometimes coloured to be in unison with that particular lodging. 
Fam. Sesarmidae. 
1900. Sesarminae, Alcock, Journ. Asiat. Soc. Bengal, Vol. 
LXIX.,, Pt..2, ppi280:.206, 400: 
The definition in the work named runs as follows :— 
“Front strongly deflexed; the lower border of the orbit 
commonly runs downwards towards the angle of the buccal 
