ZOOPHYTOLOGY. 125 



3. M. minax, n. sp. PI. XXV, fig. 1. 



M. adnata ; cellulis pi/riformibus infer ne angnstatis ; area ovali, aperturd 

 trifoliatd ; lamina glabra ; margine tenui spinis elongatis, gracilibus, 4 

 armalo. Aviculario magno, sessili, in parte anteriori cellula, medio posilo, 

 mandibulo, rostroque peracutis ; ovicellulis rotundalis, magnis. 



Adnate ; cells pyriform, contracted below ; area occupying about half the 

 front of the cell of an oval form, with a smooth thin margin armed with four 

 slender, elongated spines ; lamina smooth ; aperture obscurely trifoliate in 

 form. A large, prominent, (but not pedunculate,) avicularium placed on 

 the middle of the cell in front, below the area, and having a very acute 

 maudible and rostrum, which are placed transversely ; ovicell rounded, pro- 

 minent. 



Hab. Shetland, Barlee ; on stone. 



The strong, prominent avicularium is a striking charac- 

 teristic of this species. Its mandible and rostrum are both 

 pointed, and the organ is placed transversely with respect to 

 the axis of the cell. 



Gen. 3. Lepralia. Johust. 

 1. L. sinuosa, n. sp. PI. XXIV, figs. 2 and 3. 

 L. cellulis subrhomboideis, subplanis, lined elevald, sinuosd sejunctis, porosis; 

 orifcio suborbiculari, infra, sinuato, peristomate tenui, elevalo. 



Cells subrhomboidal, flattened in front, perforate, separated by a wavy, 

 sinuous line ; orifice suborbicular, sinuated below ; peristome thin, raised. 

 Hab. Shetland, Barlee ; on shell. Cornwall, Peterhead, Ipswich. Beach. 

 My friend Mr. C. Peach is of opinion that this species is identical with 

 one found by him in the localities above cited, and described with a figure 

 in the " Report of the Royal Institution of Cornwall for 1851," But I 

 must confess that his figure leads me to doubt the correctness of Mr. 

 Peach's surmise. 



2. L. Malusii, Audouin. 

 Far. Spinis marginalibus armata. 



In the ' Brit. Mus. Catalogue/ L. Malusii is placed among 

 the unarmed species, but subsequent observation has shown 

 that the form furnished with marginal spines, there cited as 

 a variety, may be more properly regarded as the typical 

 aspect of L. Malusii, of which a figure is here introduced, 

 taken from a specimen, in which the mode of origin of a patch 

 from a single, central, abnormal cell is well shown. 



