Bibliographical Notice. 467 
45. Psaliodes signata, Butler. 
Psaliodes signata, Butler, Trans. Ent. Soc. 1882, p. 418. n. 122. 
No. 124. 
46. Psaliodes diana, Butler. 
Cidaria diana, Butler, Trans. Ent. Soc. 1882, p. 416. n. 118, 
Nos. 32 and 472. 
Var. cynthia, Butler. 
Cidaria diana, var. cynthia, Butler, l. ¢. 
No. 37. 
47. Hupithecia corralensis, Butler. 
Helastia corralensis, Butler, Trans. Ent. Soc. 1882, p. 406. n. 100. 
2. Unnumbered. 
The female is considerably larger than the male, but quite 
like it in colouring and pattern. 
BIBLIOGRAPHICAL NOTICE. 
Elementary Paleontology for Geological Students. By Hrnry Woops, 
B.A.,F.G.S. 8vo. 222 pages, with numerous cuts. University 
Press, Cambridge, 1893. 
Tue study of paleontology of course requires a knowledge of existing 
forms, as these are the outcome of the older creatures and have close 
relationship as well with them as one with another. ‘The relics of 
extinct organisms, though distinct enough, as material consisting 
usually of silica or carbonate of lime, rarely correspond to all parts 
found in recent forms, and therefore, though supplying little enough 
to a Zoologist, are all that can be made useful by a Geologist, knowing 
their value as zoological indications, and competent'to recognize the 
history of their embedment in deposits, the mineral changes they 
may have undergone, and any altered positions of the strata that 
contain them. 
This little guide-book (one of the ‘“ Cambridge Natural-Science 
Manuals”) confines itself to a succinct account of those fossil Inver- 
tebrata which are of most use to the Geologist; and the student is 
expected to have the opportunity of consulting a collection of 
fossils. 
In the Introduction some short remarks are offered on the con- 
30* 
