MUSEUM OF COMPARATIVE ZOOLOGY. 



81 



Palaeotropus Josephinae Lov-i.v. 



An excellent series of this species shows tliat it attains a length of nearly two 

 inches. The test of the larger specimens becomes quite flattened, regularly arclied 

 from the apex towards the anterior and posterior extremities, having completely 

 lost the globular outline so characteristic of the young stages as figured by Loven. 

 It has a flattened actinal surface, slightly re-entering near the acrinostome. It 

 also loses its distinct subanal fasciolc, which is obliterated in tlic accumulation of 

 secondary and miliary tubercles at the extremity of the actinal plastron. In ad- 

 dition it lias 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. 



" St. Vincent. 



" Barbados. 



Paleopneustes cristatus A. Ao. 



A 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. 



Off Frederickstadt. 

 " Santa Cruz. 



On Saba Bank. 



Off Montserrat. 



Dominica. 



Martinique. 



St. Lucia. 

 St. Vincent. 

 Barbados. 



Lat. 18° 13' 20" N., Long. 78" 36' 40" W. 

 E. of Cape Cruz, S. side of Cuba. 



