124 Scientific Intelligence. 
a 
G. 4. Tricnopactytvs, Latr.—Carapax marginibus subinteger. Ar 
ticulus maxillipedis externi 2dus oblongus, 3tius vix oblongus, subtri- 
angulatus, margine terminali valde obliquo anguloque externo 4tum 
gerens, 2ndo multo brevior. 
G. 5. Orruostoma, Randail.—Carapax margine antero-laterali den 
tatus. Articulus maxillipedis externi 2dus oblongus, 3tius oblongus, 
2do paulo brevior, apice obliquus, prope angulum exteriorem articu 
lum 4tum gerens. 
4, Genus Heterograpsus of Lucas.—The genus Heterograpsus, de 
scribed in the recent work on the Exploration of Algiers, and figured 
Sesarme, instead of arcuate. In the species described, the H. sexden 
talus, the antero-lateral margin is bi-emarginate, Se DEM 
no other country can show. As these have all been the resu 
elements of which our submarine population is composed. Extensiv® 
tables, exhibiting the sublittoral distribution of marine invertebrata, from 
= England along the Western coasts of Great Britain 1 
British marine animals and plants are distributed in depth (or bathy- 
metrically) in a series of zones or regions which belt our shores from 
* See this Journal, xi, 278. 
