GLOBE-TROTIERS 155 
flagella. The second antennz have an acicle on the second 
joint. The third maxillipeds are subpediform, with the 
third and fourth joints elongate. The first legs of the 
trunk are chelipeds ; the three following pairs are well de- 
veloped, more or less cylindrical, and the last pair are 
slender, chelate, folded in the branchial chambers. The 
sternal plastron is wide. The pleon is bent under the 
trunk, having the first segment small and dorsally fused 
with the second; it has appendages only in the female, 
these being a rudimentary pair on the first segment, and, 
as a rule, a single one-branched appendage on the left 
side of each of the four following segments. 
The single family Lithodidee has the characters of the 
legion. ‘The members of it are found in the cold and tem- 
perate shallow waters of both hemispheres, but deep-sea 
dredgings, especially those of the Talisman, have shown 
that at great depths, even below a thousand fathoms, 
species occur in the tropics. Thus, it has been pointed 
out, the Arctic and Antarctic zones are connected by a 
submarine tunnel of cold water. The genera are not very 
numerous. One is found in the waters of Great Britain. 
Inthédes, Latreille, 1806, is now represented by several 
fine species from distant parts of the world. Inthodes 
maia (Linn.) has long been known. It is the devil-crab 
of the Norwegian fishermen, according to Herbst. Bell 
calls it the Northern Stone Crab, and is surprised that 
what he calls its slight resemblance to Maia squinado 
should have caused it to be at times confused with that 
species. The superficial resemblance, however, is not in- 
considerable, when the dorsal view alone is regarded. 
The ventral view permits of no confusion or mistake, for 
in Inthodes the pleon has in the third, fourth, and fifth 
segments paired calcified plates, the median portion being 
membranous with scattered calcareous particles. In the 
female the plates are greatly developed on the left side to 
the disparagement of those on the right, producing a want 
of symmetry akin to that which is found in the Paguride. 
The rostrum in Lithodes is spinulose, like almost all the 
other external parts of the animal. Lithodes histrix, de 
