76 



DlOTYOSPONGID^ 



being 17 mm., and the greate&t width of the cup 22 mm. Another specimen 

 with a length of 80 mm. and not quite entire at the aperture, has an anchoring 

 rope of 60 mm. in length and this is incomplete at its lower extremity. 

 The pereistent curvature of this species and its relatively rapid expansion, 

 together with its remarkably long basal tuft, \\all serve as distinguishing 

 characters. 



Locality. Several specimens have been found in the lower beds of the 

 Chemung group at Cotton hill, one mile north of Avoca, Steuben county, in 

 association with Hydnoceras tuberosum, II. eutlieles, H. multinodosiim, Arysti- 

 dictya elegans, A. nodifera and Ilallodictya Cottoniana. 



DiCTYOspoNGiA Almondensis, sp. nov. 



Plate xliv, Fig. 1. 

 The grey sandstone beds at Almond, Allegany county, are, in pluces, 

 crowded with fragments of a species of very large size, but for the most part 



these fail to afford a definite 

 conception of the aspect of 

 the entire sponge. Some of 

 these large expansions like 

 that illustrated on Plate 

 xliv, show under compres- 

 sion an obscure prismatic 

 surface, but usually the sur- 

 face is smooth and the gen- 

 eral appearance of the ac- 

 cumulated fragments indi- 

 cates that they belong to 

 a single species of Dictyo- 

 SPONGIA. Among the large 

 number of specimens col- 

 lected from this locality no 



FionBKlS. The basal portion of Biofi/osponBia X!mo?i<i«jw<«. siusrle OUe clearlv shoWS all 



the specific characters. The large example given presents the maximum size 

 observed while the accompanying figui'e represents the basal portion of a 

 specimen, showing its rapid expansion and curving sides, retaining, as well, 

 the elongate parallelograms of the reticulum Avhich are more or less noticable 

 in other species of Dictyospongia. 



