338 F. R. Cowper Reed — Salter's Undescribed Species. 



the other corallites are relatively larger than Nicholson's figure 

 (op. cit., pi. iv, fig. 3c) indicates. 



Tkachtpora (?) Seeleti, Salter. (PI. XVIIT, Figs. 4, 5.) 



187a. Alveolites Seeleiji, Salter MS. : Cat. Camb. Sil. Foss. "Woodw. Mus., p. 107 



{a 365). 

 1891. Alveolites Seeleyi, "Woods: Cat. Type Foss. Woodw. Mus., p. 13. 



The original specimen {a 365) consists of a fine branching corallum 

 from the Wenlook Limestone of Dudley (Fletcher Collection), and 

 is in an excellent state of preservation. 



Diagnosis. — Corallum ramose, subdividing into many small 

 irregularly dichotomous, cylindrical, or flattened lobate branches, 

 averaging 4 mm. in diameter, irregularly anastomosing, and covered 

 w^ith closely set small corallites in irregularly oblique or vertical 

 rows, but mostly without any definite .arrangement. Corallites 

 subcircular or polygonal, subequal in size, and usually numbering 

 5-6 across the width of a branch 4 mm. in diameter. Corallites 

 run obliquely outwards from axis, but meet outer surface at right 

 angles. Cell-walls thick, strongly granulated and punctated on 

 surface of corallum, measuring from J to ^ the diameter of the 

 calices. Calices cup-shaped and circular owing to thickening of 

 cell-walls, with small circular hole at bottom as in Striatopora. 

 Walls of corallites thickly set with minute mural pores. Tabulae 

 present ? 



Eemarks. — It is somewhat difficult to assign this species to its 

 proper generic position. The calices in their characters remind us 

 of Striatopora,^ the thickened cell-walls and closely set corallites 

 of Cladopora (Hall & Eominger),^ but the granulation of the 

 walls on the surface between the calices is a characteristic feature 

 of Trachypora.^ In this genus Trachypora (Dendropora, according to 

 Eominger, op. cit., includes it) the calices are usually much further 

 apart, but it is doubtful if this is more than a specific character. 

 The peculiar cup-shaped orifice is not limited to Striatopora, and 

 the radiating strias which are present within it in that genus are 

 here wanting. It is quite distinct from Alveolites. No species of 

 Trachypora has hitherto been definitely found in Wenlock beds, but 

 Nicholson (op. cit., p. 106) declared that he possessed a specimen 

 from this horizon indistinguishable from Dendropora. 



INCERT^ SEDIS. 



Pasceolus (?) hospitalis (Salter). (PI. XVIII, Figs. 6, 7.) 



1873. Sphcerospongia hos^ntalis, Salter : Cat. Camb. Sil. Foss. Woodw. Mus., p. 40. 

 1878. Sphmrospongia hospitalis, Nicholson & Etheridge : Mon. Girvan Silur. 



Foss., fasc. i, pp. 10-18 (mentioned as allied to Nidulites and Pasceolus). 

 1884. Sphcerospongia hospitalis, G. J. Hinde: Q.J.G.S., vol. xl, p. 835 (mentioned 



as probably related to Pasceolus) . 



1 Hall: Pal. N.Y., vol. ii (1852), p. 166. Eominger: Geol. Surv. Michigan, 

 vol. iii, pt. 2 (1876), p. 58. Nicholson: Tabulate Corals (1879), p. 97. 



2 Hall: op. cit., p. 137. Eominger: op. cit., p. 46. Nicholson: op. cit., p. 79. 

 ' Eominger: op. cit., p. 61 [Dendropora]. Nicholson: op. cit., p. 102. Freeh: 



Leth. Geog., Th. i, Bd. 1 (1897), p. 437. 



