^H The American Naturalist. [July. 
of specimens, and he gives as a result that "we may look upon the 
Sialid^^ as the group of insects to which Mormolucoides is most nearly 
allied." Sixteen specimens are figured to show the characteristic dif- 
ferentiation of the segments. 
RECENT BOOKS AND PAMPHLETS. 
lid Law and to Provide for New Designs of United States Coins. From 
At. 
EN, J. A.— The 
We 
t India Seal 
ains 
from Charlesto 
n,S. 
Bai 
R, G.— Osteologisch 
e Notizen ii 
sche 
n Anzeiger, No 
291 
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■ Reptilien. Separatabdruck aus dem Zoolo- 
Beecher, C. E.— Brachiospongidae. Extract Memoirs Peabody Mus., Yale College. 
Blytt, a.— The Probable Cause of the Displacement of Beach-lines. Extract from 
:hristiania Videnskabs-Selskabs Forhandlinger, 1889. 
BOETTGER, O.— Die Reptilien und Batrachier Transkaspiens.— Separatabdruck aus 
BOULE. M.~Essai de Pal6ontologie Stratigraphique de I'Homme. Extrait de la 
Brown Goode, G.-The Beginnings of American Science. Extract Proc. Biol. Soc. 
1- State Coll. Agric. Ex. Station, 1888. 
n ot tipeech and Development of Language. Extrai 
From^'thraut '■^■~^'''^°"*°' Brasileiros. Extrahido da Revista do Observatorio, 188I 
EiGENMANN, C. H., and ROSA S. EIGEN.MANN.-Preliminary Notes on Sout 
American Nematognathi. Extract from Proc. Cal. Acad., Vol. L 
From^thr' ^'^''^^™^-~'^^^ ^^°^'' °^ *^ International Congress of Geologists, 188) 
Garman.— On the Evolution of the Rattlesnake. Extract from Proc. Boston Soc 
Gregorio, Antoine DE.— Annales de Geologic et de Paldontologie. Fevrier, Mars, 
Haeckel, Ervst.— Report on the Siphonophora collected by H. M. S. Challenger, 
1873-1876. From the author. 
