| OCR Text |
Show 1886.] POSITION AND CLASSIFICATION OF SPONGES. 585 Uruguaya, Carter ; Parmula, Carter ; Meyenia, Bowerbank ; Hete-romeyenia, Potts; Lubomirskya, Dybovsky; Lessepsia, Keller; Potamolepis, Marshall. 2. Familia HOMORHAPHIDHE, Ridley and Dendy. Megasclera oxea or strongyla ; no differentiated microsclera except toxia. Marine sponges without gemmulae. 1. Subfamilia Renierince, auct. Spicules never completely enveloped in horny fibre. Halichondria, Fleming; Petrosia, Vosmaer, =Schmidtia Balsamo Crivelli; Reniera, Nardo. 2. Subfamilia Chalinina?, Ridley and Dendy. A considerable amount of spongin present, forming distinct horny fibres, in which spicules are contained. 1. Group Chalinorhaphina?, Lendenfeld. With abundant gigantic spicules axially situated. Chalinorhaphis, Lendenfeld. 2. Group Hoplochalinina?, Lendenfeld. With abundant gigantic spicules obliquely situated, and protruding beyond the fibre-surface. Hoplochalina, Lendenfeld. 3. Group Cacochalinina?, Lendenfeld. Irregular forms with slender spicules. Cacochalina, Schmidt; Cladochalina, Lendenfeld; Chalinopora, Lendenfeld ; Chalinella, Lendenfeld ; Chalinopsis, Schmidt. 4. Group Pachychalinina?, Lendenfeld. Irregular, digitate, lamellar forms with stout spicules, oxystron-gylus. Chalinissa, Lendenfeld; Pachychalina, Schmidt; and Ceraochalina, Lendenfeld. 5. Group Plakochalinina?, Lendenfeld. Frondose, lamellar forms with stout spicules. Plakochalina, Euplakella, and Antherochalina, Lendenfeld; Cribro-chalina, Schmidt; Tragosia, Gray ; Platychalina, Ehlers. 6. Group Siphonochalinince, Lendenfeld. Tubular, pseudogaster with stout spicules. Spinosella,Vosmaer ; Siphonochalina, Schmidt; Tuba, Duchassaing and Michelotti; Scler ochalina, Ridley; Toxochalina, Ridley; Phylosiphonia, Lendenfeld; Tubulodigitus, Carter; Patulascula, Carter ; and Siphonella, Lendenfeld. 7. Group Arenochalinince, Lendenfeld. With spicules in the connecting and sand in the main fibres. Arenochalina, Lendenfeld. |
