1897.] The Origin of the Galapagos Islands. 875 
zerland. In the lower Purbeck of Durdlestone Bay, England 
occur Formicium brodiei Westwood, and Myrmecium heeri West- 
wood, and several forms have been described from the Kim- 
meridgean of Solnhofen, Bavaria. Very rich are the Amber- 
Beds of the lower Oligocene of the Samland,* north of Kénigs- 
berg, and the well-known Florissant Beds of Colorado. Scud- 
der remarks, that about one-fourth of all the Insects from 
Florissant are ants, more than 4000 specimens, representing 34 
genera and 170 fossil species. Among Miocene localities may 
be named Oeningen in Baden, and Radoboj in Croatia.” 
I now give a list of the distribution of the Formicide of the 
Pacific Ocean, from Ihering,” with some additions from 
Emery” and Smith. Many of the additional localities have 
been kindly supplied by Mr. Theo. Pergande of the Depart- 
ment of Agriculture, Washington. 
Family FORMICIDÆ, 
Subfamily: Ponerine Mayr. 
Ponera insulana Mayr. Samoa. 
Ponera sp. aff. contracta Latr. Sandwich Islands, 
Ponera castanea Mayr. New Zealand. : 
Ectatomma metallicum Smith. Samoa, Australia. 
Ectatomma mayri Emery. New Zealand (or Australia ?). 
Ectatomma brownii Forel. New Zealand. 
Amblypone cephalotes Smith. New Zealand. 
Amblypone saundersii Forel. New Zealand. 
Leptogenys insularis Smith. Sandwich Islands. 
Pore ce ee te ee a 
33 Westwood J. O. Contributions to fossil entomology. ` Quart. Journ. Geol. - 
Soc. X, pp. 388, 393, 390, 396, 1854. 
“ Mayr. Gustav Leopold. Die Ameisen des Baltischen Bernsteins. Mit 106, 
Figuren auf. 5 Tafeln. (Beiträge z. Naturkunde Preussens I), pp. 4, 102, (10), 
tab. 5. 4° Königsberg, 1868. 
* Mayr. Gustav Leopold. Vorläufige Studien über die aper ghg 
Jahrbuch.d. k. k. geolog. Reichs-Anstalt, Bd. XVII, p. 47-62, Taf. I, 1867. 
% Ihering, H. von. Die Ameisen von Rio Grande Sul. Berliner Entom. Zeits- 
chr. Bd. XXXIX, pp. 434-436, 1894. " 
angel C. Notice sur quelques Fourmis des îles Galapagos. Ann. Soc, 
m. France, vol. LXII, p. 89-92, 1893. 
wih Trek [Hymenoptera Galapagos]. Proc. Zool. Soc., p. 83, 1877. 
. 
