TRIBE II. CARYOPHYLLACEA. 405 



The " Austral Ocean." Peron and Lesueur. 



Lamarck adds to this description that the species consists of vertical 

 and parallel tubes, forming a thick mass, resembling a Tubipore or 

 Favosite. 



Stylina echinulata, Lamk., ii. 339, No. 1. , Blainv., Man., 351, pi. 62, fig. 5. 



, Schweig., Beobacht., tab. 7, fig. 63 ; , Deslongchamps, Encyc., 708. 



Handb., p. 420. 



APPENDIX. The Sardnula perforata was described by Lamarck 

 from a specimen brought by Peron and Lesueur, from the "Austral 

 Seas," and from the description, it appears to have been a beach-worn 

 specimen, although not fossil. It consisted of an aggregation of 

 straight, parallel tubes, nearly contiguous, with filled interstices, and 

 open at both ends; they were striated by longitudinal laminae within, 

 and, according to Blainville's figure, were an eighth of an inch in dia- 

 meter. (Lamarck, ii., 340, Sarcinula, No. 1 ; Blainville, Man. d'Act., 

 348, pi. 62, fig. 6.) It is not a Stylina; neither does it seem entitled 

 to form, of itself, a genus; and not being confident as to where it 

 should be referred, it is simply noticed in this place. 



B. GLOMERATE; CALICCLIS BKEVISSIMIS, POLYPIS LONGE EXSERTIS. 

 GENUS XII. ASTROITIS. BOCCONE. 



Caryophyttidce aggregates, polypis basi tantum coralligenis, itaque salien- 

 tibus. Corolla caliculis viz prominulis, cellis concavis, fere contiguis, 

 lamellis subcequalibus, inclusis. 



Aggregate Caryophyllidse, forming coral secretions only at base ; and 

 polyps, hence, appearing to be long salient. Coralla with the cali- 

 cles scarcely at all prominent ; cells nearly contiguous, concave ; 

 lamellaB included and even. 



The species of this genus are remarkable for their long salient 

 polyps. The coralla are somewhat Astraoid, but they are formed 

 by secretions only in the lower parts of the polyps. The Astrseae, 

 with narrow interstices, bud in the disks by subdivision, while these 



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