58 
BnUetin of Natural History Society. 
sea-urchin . . . usually called in Newfoundland ox-eggs, . . . 
are frequently eaten in Newfoundland.” 
Our sea-urchin’s habits, living, as it often does, on decay- 
ing fish and other offal, are not pleasant to contemplate from 
a gastronomical point of view, but it is well to know that it 
can be safely eaten if necessity demands. The ovaries, easily 
recognized by their granular appearance and orange color, are 
the only parts that should be used. 
A complete discussion of the economics of our sea-urchin 
must also include its services to man as a scavenger, removing 
as it does, considerable quantities of fish-offal and the like. 
Another indirect use to man is found in its serving as food 
for fishes, some of which eat considerable numbers of it. 
)l^^a. Molpadia turgida, Verrill. Am. J. Sci., iii., XVII.,p. 
473. Trochostoma turgidum, Thiel, Challenger Zoo- 
logy. XIV, 1876, p. 
Massachusetts Bay to Gulf of St. Lawrence. Bay of 
Fundy, Verrill, op. cit. Given from “ Gulf of St. Law- 
rence, Whiteaves;'’ though we do not find it referred to in 
Whiteaves’ writings. 
29. Chirodota tigilliiiii, Selenka. 
Zeitschrift fur Wissenschaftliche Zoologie, [Leipzig] 
Vol. XVII., 1867, p. 
‘‘The twelve short tentacles bear 10-12 plumes. The cal- 
careous wheels having five or six spokes, are entirely smooth, 
and measure 0.1 mm. in diameter; their rims are very small. 
The excrescences stand on the intermuscular spaces, always 
in a row. Animal colorless. The intestine winds in a knot- 
The calcareous ring is small, of twelve squarish pieces united. 
Polian vesicles hang to the number of ten or twelve around 
the ring-canal. Stone canal very small. Eastport, (Maine).” 
