BIHANG TILL K. SV. VET.-AKAD. HANDL. BAND 13. AFD. IV, N:0 5. 73 



Calyx costalibus acervatim septem- 1. octo-spinosis, poro 

 oblongo; radialibus pone orbitam trispinosis; in sutiira com- 

 muni punctum semipertusum coBspicuum. 



Verruc.e ambulacrorum primariae conspicuae; in basi series 

 iitrinque singula, addita interna, minuta; disco nudo; 



Interiadiorum series primaria praävalida, ad ambitum se- 

 cunda, addita interna ntrinqiie singvila cura externa sursum 

 evanescente, disco longe lateque nudo. 



SpiNvE basi rvibraj dein albaj rubro lineat^, apice in ven- 

 tralibus curvato. 



CoLOR cinerascens zonis pallidis. 



Mensur^: diam. 24,5 mm.; altitiid. 16,5 mm. 



Salmacis Dussumieri Agass. C. R. p. 55^). — Al. Ag., 

 Kev., p. 473, t. VIII, b, f. 7, 8. 



Testa depressiusciila, basi conspicue pulvinata, stomate 

 profunde immerso. Specimen adultum, radiali I eroso, V peri- 

 proctio contiguo. membrana anali magna, multipartita, ano 

 postico, prope interradium 5. 



Calya' costalibus juxta marginem internum tri- 1. quadri- 

 spinosis, reliquo Ifevibus; radialibus muticis, truncatis, fere laj- 

 vibus, orbita punctiformi. 



Verruc.e ambulacrorum seriei primariae rar«, in alternis 

 modo assulis obviae, serie secundaria interna iitrinque singula, 

 ad ambitum valida, sursum obsoleta, disco Isevi; 



Interradiorum series primaria ad ambitum secunda, parum 

 pr;e valida, interna singula, cum externa sursum obsoleta, disco 

 fere Isevi. 



SpiNtE albo rubroque annulats, basalium apicibus cavis, 

 viridibus. 



CoLOR testEe virens, areis disco pallidis. 



Mensur^: diam. 31,5 mm., altit. 14,5 mm. 



The aspect of tlie calycinal system and tlie relations 

 between its coustituents are extensively used for specifie cba- 

 racters. As such tliey are, however, of very littlc value in 

 consequencc of the great changes the dilFerent parts are sub- 

 jected to during growtli. In a former work-) I gave a plate 



') In the diagnosis I read »plus serrés» for »moins serrés». 

 -) Etudes s. 1. Echinoidées, Pl. XXI. — Se Al. Agassiz Embryology 

 of Echinoderms, p. 12, 1863, aad Hasler Echinoidea, p. 6. 



