296 
BRITISH BN TO M 0 ST R A C A . 
We have only one British family belonging to this 
tribe. 
Family AN THO SOM AD.A3 . 
.Dichelestldje (pars), if. Edwards. 
CaligidyE, race i (pars), Leach, Diet. Sc. Nat. 
— Desmarest, Cons. gen. Crust. 
Ergasilina (pars), Kroyer, Burmeister. 
Character . — Head of considerable size, in form of a 
narrow, ovoid, convex buckler, and having attached to it 
near the mouth a pair of large foot-jaws, armed with 
strong hooks. Thorax furnished with elytraform appen- 
dages. Feet, three pairs ; all foliaceous. 
Genus Anthosoma. 
Anthosoma, Leach , Desmarest, Kroyer , if. Edwards, Burmeister, Latreille, 8fc. 
Caligus, Abildgaard, Risso, Lamarck. 
Otropresa, Risso, Hist. Nat. Eur. merid. 
Bibliographical History. — Abildgaard was the first 
person who noticed any of the species of this genus. In 
the Mem. de Copenhagen, 'Act. Soc. Nat. Havn./ 1794, 
he describes a species under the name of Caligus crassus , 
with considerable details, pointing out its peculiar confor- 
mation. 
Leach, however, was the first to form the genus ; per- 
haps without knowing Abildgaard’s description or figure, 
as he took as the type of his new genus a specimen taken 
from a shark on the coast of England. He first described 
it in the ‘ Encyclopsedia Britannica/ 1816, and after- 
wards in the 'Diet. Sc. Nat./' 1819. 
About the same time as Leach described the individual 
from which he formed the genus, Bisso described shortty, 
and figured very badly, the same species from the Medi- 
terranean. In his ‘ Crustac. des Envir. de Nice/ 1816, 
he describes a species of Caligus, under the name of 
Caligus imbricatus , which Leach ascertained from Risso’s 
