ECniNlDiT?, PETALOSTICnA. 445 
Norm., Norway, id. Forh. Selsk. Chr. 72. [Agassiz regards both as varieties 
of S. draibac'himsis.'\ 
Echinomeb’a suhangularis^ Leske {lumnter, Liitk., michelini^ Ag.), and E. 
viridis, Ag. {plana, Ag.J : Agassiz, Rev. pp. 282-286, pi. 10a. 
SphiBrechinus australitB, id. (1) Bull. 4, Australia. 
Echininoi. 
Echinus rarispinm, Sars, Forh. Selsk. Chr. 1872, p. 104, Storeggen, 80-100 
fath., and depressus, id. (19, pp. 22-25), Bodd, 160-200 fath., spp. nn. W. 
Thomson regards E. rarispinus, clegans, and norvegicus, D. & K., as doubtfully 
distinct species, adding, nevertheless (with hesitation), as a now species E, 
mia-ostonia, abundantly at 160-400 fath., off Scotland and Ireland. [jF. cscu- 
lentus is not a SphcBrechinus, as this author and Metzger state.] Agassiz 
(Rev. pp. 296 & 297, pi. 6a) unites E. rarispinus and depressus with norvegicus, 
but keeps, provisionally, E. elegans apart — suspecting, however, the identity of 
all these species with E. flemingi. E. gracilis, Agassiz, I, c. pp. 293-296, pi. 
AmUgimeustcs pentagonus, Mauritius, injlatm purpurascens, LUtk. 
MS., Australia : id. (1) Bull. 4. 
Temnechinus {Genocidaris olim) maculatus, Ag. : id. Rev. pp. 285-289, 
pi. 8. 
Trigonocidaris alhida, Ag., id. 1. c. pp. 289 & 290, pi. 4. 
Hemipedina {Ccenopedina olim) cubensis, Ag . ; id. 1. c. p. 291, pi. 3. 
Toxopneustes variegatus, Lmk. {Lytechinus carolinus) : id. 1. c. pp. 297- 
301, pi. 
Hipponoe escidenta, Leske ( Tripneustcs ventricosus, Heliechinus gouldi) : id. 
1. c. pp. 301-303, pi. 
Chjpeastrinm, 
Echinocyamm pusillus, Miill. [not young Clypcaster I] : Agassiz, /. c. pp. 304 
& 305, pi. 
Clypcaster suhdepressus, Gr. {prostratus, Rav.) : id. 1. c. pp. 306-310, pi. 
Echinanthus rosaceus, Lmk. : id. 1. c. pp. 310-314, pi. 
Echinarachnius parma, Lmk. : id. 1. c. pp. 316-319, pi. 
Mdlita sexforis, Lmk., testudinata, Kl. {pentapoi-a ) : id. 1. c. pp. 319-324, pi. 
Encopc emarginata, Leske (young = iifoa/msia !),jF. mtchdini, Ag. : id. 1. c. 
pp. .324-330, pi.’ 
Petalosticha. 
Characters by Agassiz, 1 . c. pp. 331 & 332. 
CasstdulincB, 
Echinonem semilunaris, Gm. : Agassiz, 1. c. pp. 332-336, pi. 14. 
Echinolampas dcpressa, Gr. : id. 1. c. pp. 335-339, pi. 16. 
Neolampas rostellata, Ag. : id. 1. e. pp. 340 & 341, pi. 17 ; W. Thomson, 
1. e., mouth of the Channel. 
Ehynchopygus carihcearum, Lmk. ; Agassiz, 1. e. pp. 342 & 343, pi. 15. 
Pygaster sp., from the great depths of the West Indies, discovered by 
Goes, mentioned by Lovdn (14), p. 45. 
1872 . [voL. IX.] 2 o 
