II. BRITISH SPONGES. 



(Bower-bank's nomenclature.) 



Order Silicea. 



Pachymatisma, Bowerbank. 



36 Johnstonia, Bow. 

 Normania, Bowerbank. 



37 crassa, Bow. 

 Ecionemia, Bowerbank. 



38 compressa, Bow. 



39 ponderosa, Bow. 

 Polymastia, Bowerbank. 



40 robusta, Bow. 



41 brevis, Bow. =Quasillina brevis, 



Norman. 



42 spinula, Bow. 



43 mamillaris, Mull. 



44 conigera, Bow. 

 Ciocalypta, Bowerbank. 



45 penicillus, Bow. 

 Tethya, Lamarck. 



46 cranium, Mull. 



47 Collingsii, Bow. 



48 .Schmidtii, Bow. 



49 lyncurium, Lin. 



50 spinularia, Bow. 

 Halicnemia, Bow. 



51 patera, Bow. 

 Dictyocylindrus, Bow. 



52 stuposus, Mont. 



53 ramosus, Mont. 



54 radiosus, Bow. 



55 Howsei, Bow. 



56 hispidus, Mont. 



57 aculeatus, Bow. 



58 fascicularis, Bow. 



59 virgultosus, Bow. 



60 pumilus, Bow. 



61 rugosus, Bow. 



62 rectang-ulus, Bow. 

 Phakellia, Bow. 



63 robusta, Bow. 



64 ventilabrum, Lin. 

 Microciona, Bow. 



65 fictitia, Bow. 



66 Kentii, Bow. 



67 tumulosa, Bow. 



68 simplicissima, Bow. 



69 fallax, Bow. 



70 armata, Bow. 



Microciona, Bow. continued. 



71 ambigua, Bow. 



72 plumosa, Mont. 



73 atrasanguinea, Bow. 

 Hymeraphia, Bow. 



74 vermiculata, Bow. 



75 clavata, Bow. 



76 stellifera, Bow. 



77 simplex, Bow. 



78 coronula, Bow. 

 Hymedesmia, Bow. 



79 occulta, Bow. 



80 radiata s Bow. 



81 indistincta, Bow. 



82 pansa, Bow. 



83 pilata, Bow. 



84 pulchella, Bow. 



85 stellata, Bow. 



86 simplicissima, Bow. 



87 tenuicula, Bow. 



88 zetlandica, Bow. 

 Hymeniacidon, Bow. 



89 albescens, Johnst. 



90 Thomasii, Bow. 



91 coccineus, Bow. 



92 perarmatus, Bow. 



93 membrana, Bow. 



94 firmus, Bow. 



95 placentula, Bow. 



96 armiger, Bow. 



97 Brettii, Bow. 



98 fragilis, Bow. 



99 reticulatus, Bow. 



100 fallaciosus, Bow. 



101 tegeticula, Bow. 



1 02 solidus, Bow. 



103 perlsevis, Mont. 



104 crustula, Bow. 



105 caruncula, Bow. 



106 sanguineus, Grant. 



107 mammeatus, Bow. 



108 consimilis, Bow. 



j 109 macilentus, Bow. 



no fallax, Bow. 



in virgultosus, Johnst. 



112 radiosus, Bow. 



113 medius, Bow. 



114 virgulatus, Bow. 



115 viridans, Bow. 

 n6 aureus, Mont. 



