6 Ech. 
ECHINODERMATA. 
(related to U . modesta , Ludw., and if. martensii, Semper), H. pyxoides , 
H. olivacea. Dendrochirotce : Phyllophorus broclci. Synaptidce : Chirodota 
amboinensis (related to (7. rigida). 
42. [Ludwig, H.] Ophiopteron elegans , eine neue, wahrscheinlich schwim- 
mende Ophiuriden form. Z. wiss. Zool. xlvii, 3, pp. 459-464, 
pi. xxxv. 
Each arm-joint has a pair of fins, composed of thin transparent mem- 
brane. The spines on the dorsal side of the disc are modified by being 
prolonged into five or six processes distally, which are united by a thin 
membrane, the whole giving rise to a number of funnel-shaped structures, 
which together cause a velvety down. New genus Ophiopteron , most 
nearly allied to Ophiothrix. 
43. Malagoli, M. Note paleontologiche sopra un Astrogononium ed una 
Chirodota del pliocene. Atti Mem. Soc. Mod. (3) vii, p. 69, pi. ii. 
Account of Astrogonium sp., and Chirodota elegans , n. sp. 
44. Miller, S. A. A new genus of Crinoids from the Niagara group. 
Am. Geol. i, 5, p. 263. 
Diagnosis of Siphonocrinus , n. g., containing species S. (Glyptocrinus) 
nobilis and S. ( Eucalyptocrinus , Glyptocrinus , Hall) armosus. 
45. NovAk, 0. Studieu an Echinodermeu der BOhmischen Kreide- 
formation. I. Die Irreguliiren Echinidender Cenoinanstufe. Abh. 
bohm. Ges. vii, ii, 2, pp. 1-47, pis. i-iii. 
Contains an elaborate review of the work of previous authors, and 
descriptions of the species of Irregular Echinoids of the formation, 
including two, as yet unnamed, new species of the family Echinoconidce , 
viz., Pygaster sp. (allied to P. truncatus ), and Echinoconus sp. (allied to E. 
subrotund US'). 
46. Perrier, E. Sur la collection d’Etoiles de mer recueillie par la 
Commission scientifiquo du Cap Horn. C.R. cvi, No. 11, pp. 
763-765. 
Establishes the following new genera: — Diplasterias, Asteroderma, 
Poraniopsis , Cr ibr aster, Lebrunaster , Asterodon. Poraniopsis is inter- 
mediate between Echinaster and Porania. Cribraster and Lebrunaster 
lead up to Ganeria. Asterodon must be removed from Goniasteridce and 
placed among the Archasteridce. It includes — Astrogonium singular e, 
Mull. & T roach. ; A. meridional Smith; Pentagonaster belli , Studer ; 
Calliderma grayi , Bell; and Asterodon pedicellaris , n. sp., and A. granu- 
losus , n. sp. Extraot in Bev. Sci. (3) xli, No. 12, p. 379 ; transl., Ann. 
N. H. (6) i, pp. 384-386. 
47. Pom el, A. Notes d’Ecliinologie synonymique. Bull. Soc. G6ol. (3), 
xyi, 6, pp. 441-453. 
A protest against the erroneous use by Cotteau and others of the 
names Anisaster confusus , Pom. ; Plagiobrissus , Pom.; Hypsopatagus and 
Liopatagus, Pom. ; Echinospatagus, Breyn ; Schizaster, Agassiz. A new 
genus, Pliolanipas , is to be formed, to include the species previously 
described under Plesiolampas , Pom., that name being restricted to the 
