REPORT ON THE FORAMINIFERA. 
679 
a delicate simple or branched tube projecting from the apex. In rare instances several 
of the segments of the same shell have independent tubular apertures. The walls of the 
test are thick, and the exterior strongly reticulated ; the colour is generally greyish- or 
yellowish-brown. Fully-grown individuals attain a diameter of -|th inch (6 mm.), or more. 
The best Challenger specimens of Carpenteria utricularis are from the Admiralty 
Islands, 16 to 35 fathoms ; but the species has also been found off Tongatabu, Friendly 
Islands, 18 fathoms, and off the coast of South America, near Pernambuco, 350 fathoms. 
Carter states that it is common in the West Indies, and on the shores of the Mauritius. 
Carpenteria proteiformis, Goes (PI. XCVII. figs. 8-14). 
Carpenteria balaniformis, var. proteiformis, Goes, 1882, Retie. Rliizop. Caribbean Sea (separate 
eopy), p. 94, pi. vi. figs. 208-214, pi. vii. figs. 215-219. 
I am indebted to the kindness of Dr. A. Goes for specimens of the polymorphic 
organism described by him under the name Carpenteria balaniformis, var. proteiformis ; 
and their examination leaves little doubt that the form represented in PI. XCVII. figs. 8-10, 
of which I had previous] y written a description under the impression that it was a new 
modification of the closely allied type Rupertia, belongs to the same species. The 
Challenger collections have afforded but few specimens, and they are for the most part from 
deeper water than those referred to by Dr. Goes. They are all, like the figures, few-cham- 
bered, and of columnar or irregularly cylindrical shape ; and they furnish collectively a sort 
of intermediate group connecting Carpenteria and Rupertia. Dr. Goes, however, gives a 
series of examples with tests presenting a much wider diversity of contour and mode of 
construction, — conical, subglobular or ovate, linear and uniserial, irregular and branched, 
obscurely biserial, and even with chambers crowded together in an acervuline mass,— 
and their apertures are similarly variable. 
The Challenger specimens have from three to six segments of inflated or subglobular 
form, often resembling those of a typical Globigerina. The aperture is situated in 
a stout tubular neck at the extremity of the terminal segment, the edge being sometimes 
neatly rounded, but more frequently broken or irregular. The sectional drawing (fig. 11) 
represents a specimen cut somewhat diagonally, to show the structure of the walls and 
the characters of the aperture. The shell is coarsely perforated, and in some cases 
a certain number of the pores remain open after the thickening of the wall has taken 
place, as shown in fig. 14 ; but, as a rule, the perforations are gradually filled up, and 
the exterior of the adult test is covered with strongly marked pits or punctations, 
occasionally of large size (figs. 12, 13). 
The best examples were procured from the rich dredging off Culebra Island, West 
Indies, depth 390 fathoms ; but the species occurs also at Station 33, oil Bermuda, 435 
fathoms, and at two points in the Eastern Archipelago, namely, Xares Harbour, 
Admiralty Islands, 17 fathoms, and off Raine Island, Torres Strait, 155 fathoms. 
