64 Papers from the Department of Marine Biology. 
are recorded from Brazil and five or six intermediate places. None of 
the 6 species, except H. grisea, is known from the eastern Atlantic. 
There are no fewer than 7 holothurians which seem to be charac- 
teristic of the West Indies; these are: 
Euapta lappa. Holothuria floridana. 
Cucumaria punctata. glaberrima. 
Thyone suspecta. Actinopyga agassizii. 
Holothuria captiva.! 
Of these, Huapta lappa is particularly notable for its large size and 
striking appearance, which prevent its being overlooked; it is not 
known from Bermuda, nor from north of southern Florida, nor from 
the Gulf of Mexico, northern South America, or any point south or 
east of Tobago. The Thyone is known only from Jamaica and 
Barbados. Both the Cucumaria and the Actinopyga, as well as H. 
captiva, are known from Bermuda, although the Actinopyga is very 
rare there and is possibly only accidental. Both Holothuria floridanaand 
H. glaberrima, which have not been found at Bermuda, are known 
from the Bahamas to Barbados. The remaining 5 holothurians are 
all forms whose distribution is more or less distinctly northern: 
Leptosynapta inherens. Holothuria cubana. 
roseola. Stichopus meebii. 
Thyone briareus. 
The two species of Leptosynapta are not actually known from any 
point south of Bermuda, and the occurrence of inherens there is known 
only from a single specimen, which may perhaps have been a young 
acanthia. The well-known Thyone briareus occurs along the American 
coast from Texas to Massachusetts; specimens of Thyone in the M. 
C. Z. collection from Porto Seguro, Brazil, have been identified as 
briareus, but as their preservation is poor it is quite possible they are 
not that species. Little is known of H. cubana, but Stichopus mebi 
is a very abundant species in Bermuda, Florida, and Jamaica. It 
does not occur at Tobago and there are no records for it south of 
Antigua. 
1There is strong evidence in support of the opinion that Holothuria captiva is identical with 
Actinopyga parvula. 
