ASTEROJDEA. 
JSch. 7 
AST EROIDEA. 
For a discussion of the characters of Asterias africana , see Greef, (20) 
p. 117 ; and for an account of the variability of A. glacialis, Bell, (4) 
p. 282. 
For an account of the terminology used in the description of the Pte- 
rasteridce , see Sladen, (37) pp. 191 & 192. 
Danielssen & Koren (16) discuss the proposals to form genera of 
Solaster, Crossaster, and Lophaster, and propose to unito them all under 
the name of Solaster , which they would define thus : — Body with five or 
more arms, everywhere beset with penicilliform paxillse, between these 
tentacular pores ; two series of marginal plates, more or less developed, 
but concealed by the skin ; anus central. 
Danielssen & Koren (16) describe : — 
Asterias gunneri , hyperborea, spp. nn. 
Stichaster arcticus, sp. ri. 
Pedicellaster palceocrystallus, Sladen, = P. typicus , M. Sars. 
Bathybiaster pallidus, g. & sp. nn. 
And have notes on Corethraster hispidus and Hymenaster pellucidus. 
They discuss in detail the characters of the genus Solaster , and of the 
claims to generic position of Crossaster and Lophaster , which they reject. 
Danielssen & Koren (16) give a list of the 41 species of As teroidea 
collected by the North Sea Expedition. 
Bell (3) describes as new : — 
Calvasterias antipodum. 
Cribrella niinuta , Ecuador. 
Mithrodia victories , Victoria Bank. 
Fromia tumida , Ceylon. 
And has notes on Fromia indica. 
Asterias briar eus , sp. n., Verrill, Am. J. Sci. (3) xxiii. p. 220, New 
England Coast. 
Crossaster papposus , var. n. septentrionalis , Sladen, P. R. S. Edinb. xi. 
p. 705. 
For a detailed description of Archaster bifrons , sec Sladen, ibid. p. 699. 
Archaster bairdi , sp. n., Verrill, Am. J. Sci. (3) xxiii. pp. 139-141, New 
England Coast. 
Mimaster tizardi , g. & sp. nn. (perhaps allied to Radiaster of Perrier), 
Sladen, P. R. S. Edinb. xi. p. 702. 
Caulastcr pedunculatus, g. & sp. nn., Perrier (36). 
Sladen (37) describes as new : — 
Pteraster rugatus , stellifcr , semireticulatus. 
Retaster verrucosus , peregrinator , gibber , insignis. 
Marsipaster, g. n., for M. spinosissimus t hirsutus. 
Calyptraster , g. n., for C. coa. 
Hymenaster formosus , pergamentaceus , sacculatus , echinulatus , carnosus , 
glaucus, vicarius , infernalis i ccelatus , crucifer , anomalus , latebrosus , poro - 
sissimus , graniferus, geometricus , pullatus , coccinatus ) prcecoquis. 
