262 
3- Pcntametrocrinus seinperi (P. H. Carpenter). 
P. H. CarPEXTER. Journ. Linn. Soc. (Zool.), vol. 16, 1SS2, p. 497 [Eudiocrinus seuiperi). 
"Challenger"' Reports. The Comatulae, p. 82, pi. 3, fig. 7; pi. 6, figs. 1 — 3. 
Stat. 211. 5°4o'.7S., i20°45'.5 E. Banda Sea. 1158 Metres. 2 Ex. 
These two specimens agree well with the types in the British Museum; neither possesses 
cirri, nor arms beyond the first syzygy (between the fourth and fifth brachials). 
On one arm of one of the specimens the first brachial is repeated as a small ossicle 
about one half the size of the normal first brachial, and of about half the width, being 
inserted between the normal first brachial and the second brachial ; the articulations between 
the normal and the supernumerary first brachials, and between the latter and the second 
brachial, are both synarthries. 
4. Pentanietrocrinus varians (P. H. Carpenter). 
P. H. Carpenter. Journ. Linn. Soc. (Zool.), vol. 16, 1882, p. 496 [Eudiocrinus varians). 
"Challenger" Reports. The Comatulae, p. 81, pi. 7, figs. 3-^7 [Eudiocrinus varians). 
Stat. 45. 7°24'S., 1 18° 15.2 E. Floras Sea. 794 Metres. 2 Ex. 
Stat. 48. 8°4'.7S., ii8°44'.3E. Flores Sea. 2060 Metres. 2 Ex. 
Stat. 314. 7°36'S., 1 17° 30' 8 E. Flores Sea. 694 Metres. 2 Ex. 
The two examples from Stat. 45 are of medium size; the more perfect has the cirri 
22 mm. long composed of 19 segments. 
The two specimens from Stat. 4S are small and much broken. 
The larger specimen from .Stat. 314 has the arms about 120 mm. long; the swollen 
ovaries appear to contain ripe eggs. The sm'aller specimen has the arms about 90 mm. long, 
and the cirri 1 7 mm. long, composed of 2 1 segments. 
III. Family Atelecrinid.\e Bather. 
Key to the Genera of the Atelecrinidae. 
a^ Five arms; no basals; five large basal rays separating from each other the 
five deep subradial clefts ; Atopocrinus 
a- Ten arms; basals always present, though sometimes only visible in the angles 
of the calyx ; no subradial clefts Atelecrinus 
Atopocrinus A. H. Clark. 
A. H. Cl.\rk. Notes from the Leyden Museum, vol. 34, p. 150. 
Diagnosis. — A genus of Atelecrinidae in which the arms are five in number; all the 
pinnules are present; the basals are resorbed, but five large basal rays are visible in the angles 
