Dccp-sca Alcijonarlafrorn the Indian Ocdan. 131 



Family Pennatulidae. 

 iS ubtanxi ly Pen x at u lis .e. 

 Pennatiila iiidica, sp. u, I Peniiatula spleiulens, sp. n. 

 veueris, sp. n. | pondula, sp. u. 



Subfamily Pteuokidid.e. 

 Pteroeides triradiata, sp, n. 



We regret to have to make the following corre.^tioiis — some 

 of which are merely verbal, while otiiers indicate unfortunate 

 mistakes — in our provisional list of species : — 



For Sifinpodiitm incrustans, sp. n., read Si/m/'odium dea'/nens, sp. n. 



For Clavulariii dccipicm, sp. ii., read ^i/iii/ioclium incrustans, sp. n. 



FLir Sarcojj/it/funi parvutn, sp. n., read iiarcopkytum ahcrrans, sp. n. 



For Sarcophiftitiiifuni/ifon)f, sp. n., read Sarcophi/titm affurieuides, sp. n. 



For Spon(jodes rosea, Kiikenthal, read '"Spon^foles Alcookt, sp. n. 



I'or Sponyodes rukayfe, Uick-sou iSc lliloi, read ^po lyjdes ulujiinsa, sp. n. 



For IJasuqorqia rainosa, sp. n. | , ^, . . , . 



V Ti ■ • read Lhriisoqorina irrenidans, sd. u. 



ror iJasxpjoryia auren, sp. n. \ j i> j j > {>• "• 



For Stropho(/ori/ia J'errilli, W. it S., read Lepid or/or (/in Verrilli, W. & S. 



For Herophila gracilis, sp. ii., read Chrijsotjor(/ iu Jte.cilis, \V. & S. 



For Cerafoisis p(diiue, W. «fc S., read Veratoisis (jracilis, sp. u. 



Delete Primnuisis alba, sp. n. — a misiaterpretatioa. 



I'or Primnoa EUisii, vou Koch, read Caliyjryia ind'ca, sp. n. 



For Junci'ptilain Alcocki, geu. et sp. ii., read Distichoplilam yracde, 



Verrill. 



For Staclty})tHumfuscum, sp. n., read Stnc/iypti/um maculatum, sp. u. 



For Pennatula Murrayi read Peniiutula pendula, sp. u. 



It is very ditBcult to decide what is the best course to 

 pursue in dealing with genera like Sympodium and Umhellula. 

 It is not easy to give distinctive diagnoses of the new species 

 we have felt compelled to establish, and yet the tout ensemble 

 of the characters of each results in a quite characteristic 

 appearance. References to Sympodium sp., Sympodium Sj). (?), 

 Sympodium sp. a, and the like are tedious and confusing. It 

 is probable that the investigation of a large number of repre- 

 sentatives (which this collection did not include) will show that 

 the differences between some of our species are variational or 

 modificational. The same remarks apply, though not so 

 obviously, to Acanthogorgia^ Acamptogorgia ^ Muricclla, Acis, 

 and Pennatula. 



Viviparity. 



In 1900 Prof. S. J. Ilickson reported his discovery of 

 embryos in situ in Gorgonia capensis — the first case of 

 viviparity that he had observed in his wide and prolonged 

 study of Alcyonarians. 



32* 



