646 
ZOOLOGICAL LITERATURE. 
smooth, the joints indicated by very slight depressions; small arm-spines 
standing just above the tentacles ; teeth j one or more tooth -papillee ; mouth- 
papillm arranged in a clump on the side of the mouth-frame and above its 
lower edge j two genital slits nearly as long as the disk is high. O. hun- 
hricuSf sp. n., Lyman, /. c. p. 347. 
Asteromorpha (n. gen., Liitken, /. c. pp. 60 & 100) disco costato granulato, 
brachiis sat robustis 5 vel 6, indivisis, interna parte supra nodosa et distincte 
annulata, ceterum glabris, indistincte annulatis, spinis ambulacralibus binis 
utrinque in facie inferiore brachiorum; ore papillis dentibusque veris in- 
structo; rimis genitalibus per paria approximatis, in fossis 5 vel 6, latera 
disci et angulos interbrachiales occiipantibus, collocatis. A. steenstriqni, 
n. sp., Ltk. p. GO (woodcut), habitat \inknown. 
Asteroidea. 
Choriaster granulahis, g. et sp. n., Liitken, 1. c. p. xxxv. Starfish belong- 
ing to the group with distinct anus and two rows of ambulacral feet, with 
well-marked sucking-disks. Body high, with five short, thick, nearly 
cylindrical arms with rounded extremities, their length not quite the dia- 
meter of the disk ; disk and arms quite smooth on both upper and lower 
surface, without spines of any kind or visible tegumentary plates, but covered 
by a soft leathery, densely granular integument ; anus large, central ; pore- 
area with numerous irregularly round, sharply defined pores, and occur- 
ring on the back of the body and on the sides and back of the arms, with the 
exception of the last third of the arms, where, as on the underside, the pores 
are completely wanting ; they otherwise form eight rows in length on each 
arm ; ambulacral papillae two-rowed in hand-shaped groups, the inner 6-7, 
the outer generally coarser, 4 : larger radius 105 mm. (about four inches) ; 
smaller radius 50 mm. Habitat Pelew Island and the Fijis. 
Echinaster spinulosus, sp. n., Verrill, 1. c. p. 386, west coast of Florida. 
IHeraster dance^ sp. n., Verrill, /. c. p. 386, Ilio Janeiro ? 
Echinoidea. 
Dorocidaris abi/sstcola, g. et sp. n., A. Agassiz, 1. c. p. 253. Test de- 
pressed ; spines not as distinctly fiuted and crenated as in Cidaris hystrix, 
often worn perfectly smooth, and attain their greatest diameter at about one- 
fifth the length of the spine from the base ; milled ring and neclc of spine 
sharply defined. Mamelon of primary tubercles small, deeply cut at its base, 
high, mammillary boss not prominent. Scrobicule deeply sunk ; scrobicular 
circle and interambulacral miliaries prominently raised ; secondary tubercles 
of scrobicular circle but slightly larger than the miliaries, diminishing regu- 
larly towards the sutures of the plates, which are clearly and sharply cut, as 
are also the sutures of the ambulacral plates ; eacli plate carries a larger ex- 
terior tubercle, with a smaller one nearer the abactinal edge, and sometimes 
a third and fourth miliary between the two. The poriferous zone is narrow 
but slightly undulating, and occupying half the ambulacral plate. Sutures 
of abactinal plates marked by distinctly cut lines; abactinal system large ; 
ocular plates heart-shaped; genital plates irregularly octagonal. From 40 to 
270 fathoms. 
Salenociduris rarispina, gen. et sp. nov., A. Agassiz, 1 . c. p. 254. Tlie ab- 
