668 INDEX OF GENERA AND SPECIES. 
Daphnia Mii. Ltr. Monoculus L. 
F. 
pennata iv. 167. 
Larunda Lch. 0?dscus L. Cyamus 
Ltr. Squilla DeG. Pycnogonum 
F. iii. 27. 
Limnoria Lch. Ltr. Oniscus L. 
Limnoria terebrans i. 238. 
Oniscus L. &c. iii. 77, 168. 
Porcellio Ltr. Oniscus L. F. iii. 
168. iv. 478. 
Thalassina Ltr. Cancer L. As- 
tacus F. 
Scorpio iii. 27. 
N.B. — The reader is requested to observe that in the preceding Index, 
one object has been to point out, wherever it was possible, to what Lin- 
nean or Fabrician genus each of the genera included in it may be re- 
ferred, though no species of it may have been known to those authors. 
Where a Synonym of any genus is printed in Roman letters, it indicates 
that such genus is so denominated in the former Editions of this work. 
The first namer of a genus, together with any author who has written a 
monograph upon it, or on any tribe, and the more eminent systematists, 
are usually only quoted. If the reader finds any difference, as is some- 
times the case, between the text and the Index, he will be pleased to 
correct the former by the latter.— For instance, it was not discovered 
till too late, that the name Uria was pre-occupied in Ornithology; — in 
the Index this name is altered to Uriata. Doubtful species are printed 
in Italics. 
