MARINE INFUSORIA. 



NOTES ON MAKINE INFUSORIA.* 



BY W. SA^^LLE KENT, F.L.S., F.R.M.S., ETC. 



Read before the Society January 20th, 1880. 

 Among the treasure trove amassed by the Birmingham Natural 

 History Society during their last summer's enjoyable outing on the 

 Cornish coast, and at the gathering of which said material, availing 

 myself of the kind invitation of the President, Mr. Walter Graham, I 

 was permitted to assist, a considerable number and variety of Marine 

 Infusoria were obtained. "While none of these are new to science, 

 several of them possess a more than ordinary interest with relation in 

 some cases to their individual plan of structure and alfiuities, and in 

 others to their marked diversity from the Infusorial types more 

 frequently encountered by non-migratory " Midland Naturalists." To 

 some few of these minute organisms, the produce of one day's wielding 

 of the dredge and towmg net, (July 11th,) I here propose to direct 

 attention, accompanying my remarks with delineations of the more 

 important forms. 



Out of the eight types in all it is here proposed to select, the 

 majority, five in number, were found associated with the horny 



References to Plate IV. 



Fig. l.—Dictyocysta cassis, empty silicious lorica, showing fenestrated pattern. 



Fig. 2.—Dictyocysta casms, animalcule with extended tentacula ; the fenestrae 

 of the lorica are not represented, in order to sive a clear view of the occupant (alter 

 Haeckel) 



Fig. .S. — Tintinnus siibulatus. 



Fig. i.—Ceratium ficsus. 



Fig. o.—Zoothamnium alternaiis, showing at a, a, a, the larger and axillary 

 reproductive z. oids. 



Fig. 6. — Zoothamnium dichotomum, showing at a, a, a, the larger transversely- 

 striate reproductive Zooids. 



Fig. ".—Fo'dicularia amjndla, animalcule extended and inhabiting a lorica, with 

 a moderately-produced ntcii=La30tia viriditi, S. Wiight. 



Fig^ 8. — Follicularia ampulla, empty lonca, with very short neck. 



Fig. 9. — Follicularia ampulla, lorica, with greatly produced neck, exhibiting 

 annular growth marki:.ss; Lagotia producta, S. Wright. 



Fij;. 10.— liemiophrya. gemini para, v/iio teuta-cles • i two orders fully extended. 



Fig. 11. — Hemiophri/a gemmipara, with two anteriorly developed buds. 



Fig. Vi.—Ophryodendronpedicillatum, proboscidiform zooid.wiib characteristic 

 organ extended. 



Fig. VS.—Ophryndendronpedicillatum., with proboscis retracted. 



Fig. li.—OphryodendronpediciUa.tum,veimiiorui zooid. 



Fig. 15. — Ophryodendron inuUicapitatum, sessile zooid, with four proboscidi- 

 form appendages. 



Fig. i.Q.—Oph'ryodendron multicapitatum, stalked zooid, with two proboscidiform 

 organs, one immaturely developed vermiform zooid, and two supplementary 

 spheroidal buds. 



Fig. 11.— Aster im<ella Bleakeleyii (?) showing characteristic spiral disposition 

 of the associated frnstnles. 



Fig. IS.— Asterionella Bleakeleyii (?) a few detached frustules, exhibiting a 

 substellate disposition. 



Fig. li).— Asterionella Bleakeleyii, single frustule. 



* The full title of this paper is " Notes on Certain Marine Infusoria, obtained 

 during the Summer Excursion (1879) to Falmouth of the Birmingham Natural 

 History and Microscopical Society, communicated by W. Saville Kent, F.L.S., 

 F.U.M.S., and Honorary Corresponding Member of the Biimingham Natural 

 History and Microscopical Society." 



