94 Mr. H. J. Carter on Ramulina parasitica. 
smaller than it is above. The head and collar pale yellowish 
white; the thorax, tegule, and the base of the abdomen 
silvery white; the abdomen yellowish white, darker at the 
anus and on the underside; the legs and antenne pale fawn- 
colour. Expanse 2 inches. 
Hab. Ecuador, Sarayacu (Buckley); Zamora, September 
(in coll. Mons. P. Dognin). 
This very beautiful species is quite distinct from any 
known to me. 
XIJ.—Ramulina parasitica, a new Species of Fossil Fora- 
minifera infesting Orbitolites Mantelli, var. Theobaldi, 
with Comparative Observations on the Process of Reproduc- 
tion in the Mycetozoa, Freshwater Rhizopoda, and Foramint- 
jera. By H. J. Carrer, F.R.S. &e. 
[Plate VIII.} 
Ramulina parasitica, n. sp. (fossil). 
Test thin, calcareous. Consisting individually of a single 
chamber (Pl. VIII. fig. 2,a), which is stoloniferous, and 
collectively (fig. 1, ff, and fig. 2) of the same, forming a reti- 
culated structure in which the chambers are united to each 
other by the stolons (fig. 2, &). Chamber or lobe varying in 
shape from globularity to any kind of multiangulate figure, 
which may be produced by a variable number of stolons 
dragging out its convex surface in different directions into 
angular forms, so as in the aggregate to effect a reticulated 
structure in which the chambers are represented by the knots 
and the stolons by the interuniting cords of the net (fig. 1, 
ff). Chambers or lobes varying in size under 1-360th inch 
in diameter ; stolons cylindrical, about 1-1800th inch in dia- 
meter, varying in length with the distance between the cham- 
bers which they connect. The projecting angles of neigh- 
bouring chambers often uniting directly, so that two or more 
become continuous without the intervention of stolons (fig. 
1,g, and fig. 2,ee). Some are dark brown and others cale- 
white (what the brown colour arises from I am unable to 
say). Externally furnished (chiefly on the convex side or 
that opposite the stolons) with a number of delicate, straight, 
hair-like tubuli about 2-6000ths inch long and almost of 
immeasurable thinness (fig. 2, ccc), each of which projects 
