SIPUNCULOIDEA. 
133 
authors, reaching 3 cms. in length, and the relative proportion of breadth to length is 
different. 
and must vary from time to time. 
This latter factor depends however on the state of the contraction of the muscles 
The retractors are very powerful muscles, and in almost 
all the specimens collected by Mr Gardiner the body-wall had ruptured and the retractors 
with part of the viscera had protruded. 
Locality. Minikoi, Laccadive Islands. 
6. Phascolosoma lobostomum Grube. 
W. Fischer. 
Described also from the West Indies. 
Abh. Ver. Hamburg, xu. 1895, p. 14. 
Many specimens of a species which closely corresponds with Phascolosoma lobostomum 
Grube. 
Locality. These were dredged at depths between 6 and 20 fathoms at Hulule, Male Atoll, 
in the Maldives. This species has previously been described by Fischer from Somoa (? Samoa). 
V. Genus PHYSCOSOM A.’ 
7. Physcosoma agassizii Kef. 
Shipley. 
Willey’s Zoological Results, Part mu. 1899, p. 155. 
This species was taken out from the coral rock in which they live. 
Locality. Minikoi, Laccadive Islands, Goidu, Goifurfehendu Atoll and from Maduwari, 
South Mahlos in the Maldives and from Hulule, Male Atoll, in 
specimens found together with the second collection of S. vastus. 
the same Islands. Two 
The species, which is 
very near to Phys. scolops Sel. and de Man, has been recorded from the eastern Pacific 
from Puntarenas to Esquimault, and recently from near the mouth of the Congo, from 
Ponapé, one of the Carolines, and from Lifu in the Loyalty Islands. 
8. Physcosoma asser Sel. and de Man. 
Shipley. 
Willey’s Zoological Results, Part 11. 1899, p. 155. 
One specimen was found in association with S. vastus, and two more under the growing 
coral at the extreme edge of the reef, where there was no sand. 
Locality. 
Minikoi, Laccadive Islands; a second collection was dredged at a depth of 
30—36 fathoms at South Nilandu, in the Maldives, and at 35 fathoms at Kolumadulu, 
in the Maldives, and at a depth of 40 fathoms at Mulaku in the same Islands. 
This species 
extends across the Indian Ocean from New Britain and the Malay Straits to Mozambique. 
1 The following is taken from Dr F. A. Bather’s article on 
Echinoderma in the Zoological Record, 1900, pp. 77 and 78. 
I am indebted to the author for sending me a proof of the 
article. ““Prophymosoma, nom. nov. pro ‘Phymosoma Shipley, 
récemment proposé pour des Holothuries,’ non Haime; 
Lampert (187) p. 54. [Phymosoma is not Shipley, but 
Quatrefages, not a Holothurian but a Gephyrean; the name 
Physcosoma is already proposed for it by Selenka (Zool. Anz. 
xx. p. 460, 1897), but objected to by Spengel (Zool. Anz. xxt. 
p- 50, 1898) because Physchiosoma was used by Brera, 1811, 
presumably in error for Physcosoma. But since Selenka gave 
gtcxwy as the derivation of his name, it should have been 
spelled Physconosoma, a form not liable to confusion with 
any name derivable from ¢vcxy. Prophymosoma is therefore 
a syn. of Physconosoma.}” 
The reference to Lampert (187) is “Btude sur quelques 
Echinides de l’Infra-Lias et du Lias,’’ Bull. Soc. Yonne, tm. 
lre semestre, pt. 2, Jan. 1900. 
