. The Annals and magazine of natural history; zoology, botany, and geology. Irish Species of Eylais. 513 rather weakly developed, with from 12 to 14 rather slender feathered spines; fourth with very numerous spines grouped irregularly along the sinuate inner margin. Fig. Localities. Fish Pond near G-orey, and at Enniscorthy, County Wexford ; also in the Portmarnock Brickfields, near Dublin. Eylais infundibulifera, Koenike. 1897. Abh. Ver. Bremen, Bd. xiv. pp. 284, 295, figs. 3, 4 This is probably the commonest and most generally distri- buted species in Ireland. I have taken it at Lough Ne
. The Annals and magazine of natural history; zoology, botany, and geology. Irish Species of Eylais. 513 rather weakly developed, with from 12 to 14 rather slender feathered spines; fourth with very numerous spines grouped irregularly along the sinuate inner margin. Fig. Localities. Fish Pond near G-orey, and at Enniscorthy, County Wexford ; also in the Portmarnock Brickfields, near Dublin. Eylais infundibulifera, Koenike. 1897. Abh. Ver. Bremen, Bd. xiv. pp. 284, 295, figs. 3, 4 This is probably the commonest and most generally distri- buted species in Ireland. I have taken it at Lough Neagh ; in the River Corrib, Galway ; the Blackwater, Co. Cork; Lough Gur, Co. Limerick; and at various localities near Dublin. The eye-plate of this species is subject to great variation. I have seen Dr. Koenike's type specimens, and, as he has himself clearly stated, there can be no doubt that this species is the same as E. bifurca, Piersig. Dr. Koenike's specimens agree excellently with the description and figures of the last- named species (Deutschl. Hydrach. pi. xli. figs. 120 a, b). The following is a description of an Eylais which, although it differs very strikingly from the type form of infundibu- lifera, Koenike, should, I think, be referred to a variety of that species. It may be called stagnalis, var. n. The eye-plate (fig. 9) is very large, measuring about •50 millim. across, length of single capsule '30 millim. Anterior margin produced at centre in a narrow irregularly pointed process, the apex of which serves for a muscle- attachment; on each side of this the bridge is slightly undu- late ; posterior emargination broad, deep, and evenly rounded, leaving a chitinous bridge, varying from -05 to "10 millim. in. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original London, Taylor and Francis, Ltd
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Keywords: ., bookcentury1900, bookdecade1900, bookpublisherlondo, bookyear1903
