312 
BRITISH ENTOMOSTRACA. 
that with the scanty knowledge he had of their habits and 
history, Linnaeus should have considered their proper 
place in the system of nature to be amongst his Mollusca ; 
animals belonging to his class Vermes, and characterised 
by him, from the softness of their body and the want of a 
shell. The various editors and continuators of Linnaeus, 
and most systematic writers, up to a late date, have more 
or less strictly followed his arrangement. Both Bruguiere, 
in the ‘ Encyc. method./ 1792, and Blumenbach, in his 
‘ Handbuch/ 1779, have adopted his place for them in 
their systematic arrangement. Cuvier, in his ‘Tableau 
elementaire/ 1798, arranges them amongst the Mollusca 
gasteropoda , placing them along with those which have 
free motion in the water. Lamarck, in his ‘ Systeme des 
Anim. sans Verteb./ 1801, likewise fixes them amongst 
the Mollusca, arranging them with the naked Mollusques 
cephales. Bose also admits them among the Mollusca ; 
but observes that they approach the intestinal worms. 
Lamarck, dissatisfied with his first arrangement, after- 
wards, in his ‘Philosophic Zoologique/ 1809, removes 
them to the Annelides, placing them along with the 
Planariae and Leeches. Still later, in his ‘Extrait du 
Cours de Zoologie/ 1812, he indicates the necessity of 
forming a distinct class to receive them, which he calls 
Epizoaires, a series of animals which he could not refer 
exactly to any of the already determined classes of the 
animal kingdom ; and in the ‘ Hist. Nat. Anim. sans 
Verteb./ first edition, 1816, in placing them amongst 
the Epizoaria, he says, “ these animals approach near to 
worms and to insects, without belonging to either. They 
indicate the existence of a particular series, which may 
probably form a new class, and which may properly fill up 
the great void which exists between insects and worms.” 
Of this little group he adds, “ I only at present make a 
simple provisional indication.” 
Oken, in 1815, in his c Lehrbuch der Naturgeschichte/ 
following Linnaeus in placing the Lerneae amongst the 
Mollusca, was the first who commenced dividing them 
