REPOET THE HOLOTHUEIOIDEA. 
33 
Genus 4. Chirodota, Esclischoltz, 1829. 
Tentacles ten to twenty, peltate digitate. Deposits — groups of wheels, enclosed 
within warts in the integument, and, besides, often small more or less curved 
rods or S -shaped bodies. Wheels regularly with six spokes. Exceptionally 
S-shaped bodies alone present. Hermaphrodite. 
A. No wheels, only S-shaped bodies. 
Chirodota japonica, von Marenzeller, 1881. 
Tentacles ten, with fourteen to sixteen digits. A single Polian vesicle. S-shaped 
bodies collected in heaps, four to seven in each, with their curled end directed 
towards the periphery of the heaps. 
Habitat. — Eno-Sima, Japan (v. Marenzeller). 
Chirodota Theel. Sigmodota purpurea, 1877. Chirodota purpurea, 
J. Bell, 1881. 
Tentacles twelve, digitiforni. S-shaped bodies rare. 
Habitat . — Kerguelen Islands and Strait of IMagellan (Studer), Elizabeth Island (Jeffrey 
Bell). 
For reasons given above in the text, I think it most credible that the species of 
Studer is distinct from that of Lesson, therefore the specific name purpurea must 
he kept for Lesson’s species. Compare even my remarks in the text under 
Chirodota contorta. The description of Studer is very brief. 
Chirodota ferruginea {Toxodora), Yerrill, 1882. 
Tentacles twelve, with numerous digitations. Skin thin, somewhat translucent, fiUed 
with minute redchsh-brown pigment-cells, and having numerous, minute, slender 
plates in the shape of a bow, or a parenthesis, with the ends incurved. 
Habitat . — Southern coast of New England (Verrill). 
On reading the summary description of Verrill, it is impossible to find any definite 
distinction between this species and the preceding one. 
B. Wheels together with S-shaped bodies. 
Chirodota contorta, Ludwig, 1875. 
Tentacles twelve, with thirteen to fourteen digits. Six to seven Polian vesicles. 
The wheel papillae irregularly scattered over the interambulacra, more numerous 
on the bivium and in the anterior part of the body. 
Habitat ? 
(ZOOL. OHALL. EXP. PART XXXIX. 1885.) Q<1 ^ 
