74 Echin. 
XIV. ECHINODERMA. 
doubtfully maintained, in Palaecisterinae, with genotype T. wyville- 
thomsoni ; Gregory (111) p. 345. 
Tosia Gray 1840, has genotype T. australis , and must be preferred to 
Pentagonaster Perrier and Sladen, but is perhaps not distinct from 
Pentagonaster Gray, rediagnosed, with key to spp. which are arranged 
under sections—A. Typical, B. Plinthaster , C. Ceramaster (p. 158) ; T. 
( Plinthaster ) comta , n. sp., 683 fms. ‘Albatross 5 station 2117, 
W. Indies (p. 163, pi. xxvii) ; T. granularis , specimen from Halifax 
N. S. described (p. 162) ; T. ( Plinthaster ) nitida , n. sp., 335 fms. 
‘Albatross’ station 2396, W. Indies (p. 165, pi. xxvii): Verrill (243). 
t Trichasteropsis, maintained, with genotype 7 T . cilicia , and referred to 
Aspidosomatidae ; Gregory (111) p. 351. 
t Tropidaster possibly “a later representative of the Lepidasteridae ”; 
Gregory (111) p. 353. 
t Ur ami ter, n. g. of Lindstromasterinae , with genotype Palaeasterina icina- 
hani which is rediagnosed ; Gregory (111) p. 347. 
+ Urasterella , maintained as genus of Taeniastemdae , with genotype Uraster 
ruthveni , and inch Stenasterpulchellus ; Gregory (111) p. 352. 
Valvata , discussed and extended to include Linckiidae, Pentacerotidae, 
Antheneidae , Goniasteridae, Oclontasteridae, Plutonasteridae, Goniopec- 
tinidae , Benthopectinidae ; Verrill (243) p. 198. 
t Xenaster, maintained provisionally, with genotype AT. margaritatus , which, 
however, “ if Simonowitsch’s figures are incorrect 55 “ might take rank 
close to Palceaster eucharis ,” while AT. simplex “ ought no doubt to be 
made the type of a new genus,” but “ the value of [the only diagnostic] 
character is doubtful” and “if Simonowitsch’s figures are incorrect" 
it “might enter Palceaster ” ; Gregory (111) p. 346. 
i Xenasterinae, n. subfam. of Palaeasteridae ; Gregory (111) p. 346. 
(E.)—OPHIUBOIDEA. 
List of new genera and species published since Lyman’s Challenger Report, 
1882; Lutken & Mortensen (162) pp. 206-208. 
Amphilepis patens Lym., “rather important differences,” from type in 
specimens fr. 10° 14' N., 96° 28' W., 2232 fms.; Lutken & Mortensen 
( 162) p. 161, pi. x. 
Amphilimna , n. g. with genotype Ophiocnida olivacea Lym., perhaps inch 
A. caribaea Ljung. as young ; Verrill (244) p. 30. 
Amphiocnida , n. s-g. of Amphiura ; Verrill (244) p. 26. 
Amphiodia , n. g. with genotype A. pulehella (Lym.); Verrill (244) p. 24. 
Amphioplus , n. g. with genotype A. tumida (Lym.); Verrill (244) p. 25. 
Amphipholis , diagnosed, with genotype A. squamata or A. elegans; Verrill 
( 244) p. 24: “much better defined” than Ophiocnida, but apparently 
not accepted; Lutken & Mortensen (162) p. 156. A. ^om, redescr. 
(p. 28); A. tenera maintained and a neanic specimen described 
(p. 29): Verrill (244). 
Amphipsila, n. g., with genotype A. fulva (Lym. as Ophiopsila) (pp. 55, 
57); A. macidata , n. sp., 200 fms., off Havana (p. 55, pi. iii); Verrill 
(244). 
Amphiura, restricted and diagnosed, with genotype A. chiajei and sub¬ 
genera Ophiopelte, Hemilepis, Amphiocnida ; Verrill (244) p. 24. A. 
sp., disc wanting, therefore not named (p. 158, pi. xiii); A. assimilis, 
n. sp., 2° 35' N., 86° 55' W., 770 fms., one specimen with irregular 
mouth-sliields, perhaps related to A. chilensis (p. 153, pi. x); A. 
hrevipes, n. sp., 1° 7' N., 81° 4' W., 1740 fms. (p. 149, pi. xi); A. 
canescens Lym., referred to Ophiactis (p. 143): Lutken & Mortensen 
(162). A. caulleryi as in (169) Zool. Rec. 1897 ; Koehler (142) p. 42, 
ph vi. A. chiajei, breeding period; Lo Bianco (147) p. 496. A. 
