MUSEUM OF COMPARATIVE ZOOLOGY. 81 
Palæotropus Josephine Lovin. 
An excellent series of this species shows that it attains a length of nearly two 
inches. The test of the larger specimens becomes quite flattened, regularly arched 
from the apex towards the anterior and posterior extremities, having completely 
lost the globular outline so characteristic of the young stages as figured by Lovén. 
It has a flattened actinal surface, slightly re-entering near the actinostome. It 
also loses its distinct subanal fasciole, which is obliterated in the accumulation of 
secondary and miliary tubereles at the extremity of the actinal plastron. In ad- 
dition it has the double ambulacral pores, forming, as in Paleopneustes, rudimen- 
tary petaloid ambulacra, contrasting most markedly to the simple ambulacral pores 
characteristic of the young of this genus. This brings the genus very close to 
Nacopatagus, which the adult greatly resembles. 
Station 241. 163 fathoms. Off Grenadines. 
UU. 194 ii * St. Vincent. 
"e osol 200 = * Barbados. 
ad 1 5 ดี 180 ie ae 
«200. 140 y di I 
ไร 89 di e ji 
Paleopneustes cristatus A. Aa. 
À small specimen measuring about two inches in longitudinal diameter, showed 
a narrow but very distinct fasciole, parallel to the ambitus immediately above it, 
and an indistinct branch round the anal system. The disappearance of the fasciole 
in this species in the older specimens I have already alluded to when describing 
Linopneustes Murrayi, a Japanese type closely allied to the West Indian Paleo- 
pneustes. 
Station 128. 180 fathoms. Of Frederickstadt. 
“ PL 115 se “ Santa Cruz. 
ค ล Dg. 150 s On Saba Bank. 
Hair 88 " Off Montserrat. 
cd H's} Goh 120 ES x: Us 
aea tn 148 P s x 
รั ณิ TONE 94 " * Dominica. 
OS EDS 108-950 “ à "T 
ut 210 ds * Martinique. 
SH ล 0 96 "n b s 
Ven y In 116 ES * St. Lucia. 
ae" nal 95 it * St. Vincent. 
Eb 000, 7t i * Barbados. 
So UM 56 £r E 2 
“ 800. 8 “ JU 
D x. (Bartlett) 103 2 Lat. 1813 20" N., Long. 78° 36’ 40" W. 
ME Sang E 206 n E. of Cape Cruz, S. side of Cuba. 
' 
VOL. VIII.— NO. 2. 6 
