-hydrozoa. 
Goal. 25 
Stromatoporoidea. 
Pocta (172) adds the following species from the Silurian strata of 
Central Bohemia : — 
Actinostroma contextum , Barraude; A. fruslulum, A.pcrspicuum , A.vastum. 
Clathrodictyon bohemicum, Barrande ; G. clarum , C. neglectum , G. socium, 
G . subtile , C. terminatum. 
Stromatopora columnar is, Barrande ; S. compta , fif. fiorida , Nov&k ; S. 
latens ; rarissima , Barrande. 
Etheridge (G3) makes the new genus Cystistroma for Labechia (?) 
( Cystistroma ) donnellii , Cowra, county Bathurst. Cystistroma, like 
Actinostroma , belongs to the “ Hydractinioid ” section of the Stroma- 
toporoidea , in which the radial pillars and concentric lamiuae are 
present as distinct, though closely connected structures. 
RHABD0P1I0RA. 
Callograptus ? capillosus , C. dichotomus , ( 7 . exilis , C. muscosus , ( 7 . nullus , 
G. parvus, C. scopatus ; Pogta (172). 
Climacograptus novdlci ; Perner (168). 
Dendrograptus cotistrictus ; Perner (168). 
Desmograptus agrestis , Z). at text us, D. plexus , D. textorius , Z). undulatus , 
Barrande ; Pocta (172). 
Dictyonema bohcmicum , Barrande, Z). confer turn , Z). ? dubium , X). grande , 
Barrande, Z). graptolithorum ; Pocta (172). 
Didymograptus barrandei , J). bifid us, Hall, var. incertus , Z). clavulus , 
D. denticulatus , Z). lapworthi , Z>. linguatus , D. lonchotheca , 17. oligo- 
theca , D. pennatulus , Hall, var. Tiamatus , Z). retrofiexus, D. spinu- 
losus, D. vacillanoides ; Perner (168). 
Diplograptus euglyphus , Lapworth, var. angustus , T). insculptus , Z>. ftngrtt- 
litheca , Z). lobatus , Z). rugosus , Emmons, var. fritschi, X>. feres, 
Barrande, I), trubinensis ; Perner (168). 
Inocaulis aculeata , Z. attrita , Z dumetosa ; Po5ta (172). 
Monographs ansulosus , Gullerasen ; JZ. cygneus , Kallholn ; M . flagcllaris, 
Nitsjo; JZ limatulus , Kallholn; AT. s^wJm^Nitsjo; TOiinquist (198). 
Vtilograptus glomeratus, P. ramale, ? Z\ suavis ; Pocta (172). 
Rodonograptus , n. g. (in part = Sphcerococcites, Goeppert) ; 72. asteriscus 
(in part = S. scharyanus ); Pocta (172). 
Stelechocladia , n. g. ; S.fruticosa, S. horrida ; Pocta (172). 
Thamnocceluniyii. g. ; T.fruticosum, T. penmdatum ; Pocta (172). 
SCYPHOZOA. 
Dixon (53) brings forward evidence to show that — 
Lucernaria cyathiformis, Sars. ; Carduella cyathiformis , Allman ; 
Dcpastrum cyathiforme , Gosse, are all the same form. 
Kisiiinouye (127) adds two new species of rhizostome medusae :— 
Mastigias physophora. 
Thysanostoma dcnscrispwn. 
