'210 MR. G. H. WAILES ON FRESHWATER 



Leidy, 1879, PI. 45. figs. 7, 9, shows such a colony which he doubtfully 

 ■ascribes to this species, but in reality it belongs to the Heliozoon Elceorlianis 

 ■cincta, Greeff^ whose embryos contain reddish globules, whereas the globules 

 in D. ArcJieri are usually yellow but sometimes of a pale blue colour 

 (v. Penard, ' Les Heliozoaires,' 1904, p. 228). 



Distribution. — Palisades, N.J. 



Sub-Class HELIOZOA. 



Family AcTiNorHRYiD^. 



ACTINOSPH^RIUM ElCHHORNII, Elireiib. 



Leidy (6), p. 259, pi. 46. figs. 1-11. 

 This species occurs numerously in several localities ; many small ones 

 f(Leidy, figs. 3 & 5) were seen, the result of the division of mature individuals. 

 Distribution. — Palisades ; Englewood ; West Pointy N.J. 



SOUTH AMERICA. 



During the years 1911 and 1912 moss and squeezings were received that 

 had been collected by James Murray in South America, for examination 

 for Rhizopoda ; the gatherings from Bolivia and Peru are described in his 

 ' Notes on the Natural History of Bolivia ' (1913) ; the others are here 

 ■described. 



List of gatherings : — 



(1) Antofagasta, Chili ; one gathering from a pond : 6 species. 



(2) Valparaiso, Chili ; one gathering from a pond : 7 species. 



(3) Puntas Arenas, Straits of Magellan, Chili ; gatherings from 



sphagnum, ponds, and stream : 29 species. 



(4) Rio Janeiro, Brazil ; gatherings from moss (shore and inland), 



ponds, and sphagnum collected on the slopes and near the 

 summits of Mt. Papagaio (4000-5000 ft.) and Mt. Corcovada 

 (2200 ft.) : 55 species. 



(5) Buenos Ayres, Argentina ; moss from trees : 3 species. 



(6) Panama, Central America ; a sample of dry sandy moss : 



8 species. 



Little is known of the distribution of the Rhizopoda in South America. 

 Ehrenberg (1841) records Arcella pileus and two other species, and in 1871 



