No. 186.] 75 



Original Names. Changed Namjes, Remarks, etc. 



Vol. I, piige 



SCHIZOCRINUS 81 



Scliizocrinus nodosus 81 



" striatus 316 



« (indet.) _.. 80 



SCYPHOCRINUS 85 Not Scyphocrinus of Zenker. 



Scyphocriiius heterocostcilis . 85 



SCOLITHUS 2 



Scolitlius linearis 2 



Sphenothallus 261 



Splienothallus angustifblius. 261 



" latifolius 262 



Stellipora 79 



Stellipora antlieloidea 79 This species is referred by Edwards and 



Haime to the Genus Constellaria of Dana (Zoophytes, 18-1-9). A more 

 careful examination, and removal of the adhering shaly matter, shows the 

 entire surface to be poriferous. I have not, however, found good reason for 

 separating these forms of Chmtetes {Sienopora) from others in the same 

 association; and the Chcetetes lycoperdon, in the hemispheric forms, has 

 not unfrequently its surface, or a part of its surface, marked by stelliform 

 elevations as in the specimen under consideration. 



Stictopora* 73 



Stictopora acuta 74 



" elegantula 75 



" fenestrata _ 16 



" glomerata 17 



" labyrinthica 50 • 



" ramosa 5] 



StR-EPTELASMA 17 mm. Milne-Edwards & Jules Haime 



have regarded the S. corniculum, S. 

 Streptelasma COrniculum .. 69 cmssa, S.inumiamellosa&nA.S.parvula 



as identical species. The S. parvula ma,y 



" CraSSa 70 be the young of S. corniculum ; but S. 



crassa presents features incompatible with 



" 6XpanSa , 17 specific identity. The original of tS. mji/^-i- 



lamellosa is not now accessible to me for 



" multliamellOSa ._ 70 comparison. The species identified as S. 



,, , 1^ ^ corftfcMZM?» by these authors, from western 



parvula /l localities, I have regarded as a distinct 



" profunda 49 °™" 



Stromatocerium 48 



Stromatocerium rugosum 48 



* I am not j^et convinced that this genus is synonymous with Ptilodictyia of Lons- 

 dale. The typical species of the latter genus, P . lanceolata, presents certain differences 

 of character, which, judging from figures only, may be regarded as of generic impor- 

 tance. The characters of P. lanceolata, as shown in figures and iu a closely allied 

 species in our strata, correspond more nearly with those species which I have referred 

 to the genus P keen op or a, smd which maybe identical witli Ptilodictyia. All the species 

 of Phcenopora which I have observed are simple, as is the typical form of Ptilodictyia, 

 while the Stictopora are always ramose. 



