554 
THE VOYAGE OF H.M.S. CHALLENGER. 
Examples of Cristellaria papillosa have been obtained from two localities, — off 
Kandavu, 210 fathoms ; and off Culebra Island, West Indies, 390 fathoms. Fichtel and 
Moll mention the Adriatic as the habitat of their specimens. 
Cristellaria echinata, d’Orbigny, sp. (PL LXXI. figs. 1-3). 
“ Nautili Echinati, sive Papillosi, & Circumradiati,” Soldani, 1780, Saggio Oritt., p. 98, pi. i. 
fig. 6. — 1789, Testaceographia, vol. i., pt. 1, p. 65, pi lix. figs, qq, rr. 
Nautilus calcar, var. e, Fichtel and Moll, 1803, Test. Micr., p. 74, pi. xii. figs, a.b.c. 
Robulina echinata, d’Orbigny, 1846, For. Foss. Vien, p. 100, pi. iv. figs. 21, 22. 
„ „ Czjzek, 1847, Haidinger’s Naturw. Abhandl., vol. ii. p. 141, pi. xii. 
figs. 24, 25. 
D’Orbigny describes, under the name Robulina echinata, a Cristellarian shell, with 
marginal keel and radiating rowel-like spines ; the sutures are limbate, and the surface 
of the test is studded with raised beads or tubercles, which on the later chambers give 
place to partial costae. 
In the specimen figured by Czjzek, with the same appellation, the sutural limbation 
is to some extent broken up into tubercles, and the costate ornament is much more 
strongly developed ; the shell in fact partakes almost equally of the characters of 
Cristellaria echinata, Cristellaria calcar, and Cristellaria costata. 
Cristellaria echinata occurs at two points in the Western Pacific, — off the Philippine 
Islands, 95 fathoms; and off Kandavu, 210 fathoms. It was found by d’Orbigny in 
sands from the Adriatic. 
The fossil specimens above referred to were from the Miocene of Baden, near Vienna, 
and the Tertiary deposits of Coroncina in Italy. 
Cristellaria gemmata, H. B. Brady (PL LXXI. fig. 6, 7). 
Cristellaria gemmata, Brady, 1881, Quart. Journ. Micr. Sci., vol. xxi., N. S., p. 64. 
Test planospiral, broad, oblong, compressed or complanate ; lateral faces only 
slightly convex, dorsal edge acute or subcarinate; segments broad and arcuate, two or 
three of later ones free at both lateral margins ; exterior ornamented with exogenous 
beads, arranged either upon the sutural lines, or, less frequently, in rows parallel to them. 
Length, U^th inch (1*26 mm.). 
This is one of the complanate or Planularian group of Cristellaria. The dorsal edge 
of the test is sharp or subcarinate, and the septal face of the later segments, which forms 
the principal part of the ventral margin, is square. The sutural ornament resembles 
that of many specimens of Cristellaria wether ellii (without longitudinal costse), 
and the surface of the chambers is sometimes rough, owing to the presence of minute 
tubercles or prickles. 
