338 A. EF. Verrill—The Bermuda Islands; Coral Reefs. 
The spicules are polyserial, very slender oxeote forms, variable in 
size; some are nearly styliform, being blunt at one end and acute at 
the other. Much fine calcareous sand is imbedded in the outer 
layers. 
Bermuda, on a reef in Bailey Bay, one large specimen in Amer. 
Mus. Nat. Hist., coll. Whitfield; Bahamas, Whitfield. 
Family, Desmacellide. (P. 333.) 
Desmacella jania, sp. nov. Plate xxxvo, figs. 5, 6. 
? Terpios jania Duch. and Mich., Spong., p. 101, pl. xxii, fig. 8. 
Our examples of this curious species are massive and irregularly 
lobulate, 2 to 3 inches high; the lobes are more or less conical, with 
a terminal osculum, 3 to 5™™ in diameter. The whole surface and 
often most of the thickness of the walls are composed largely of a 
small slender-branched coralline (Janta), white when dry. Toward 
the base of the sponge this often nearly disappears, as if absorbed. 
The spicules are mostly long, slender tylostyles, .22 to .25™™ long, 
mostly with small round heads, and mixed with styles of about the 
same length. The microscleres are minute, strongly curved, c-shaped 
sigmas, about .037 to .040™™ long. 
Other sponges, associated with Jania in the same way, have been 
described as the Reniera fibulata of Carter (1882). The Zerpios 
jania D. and M. may not be this species, though it had the same 
form, for its spicules were not described. When treated with acids 
the form of the sponge is still preserved, with the translucent 
organic basis of the Junia imbedded in its structure, even close to 
the edges of the oscules. 
Family, Hsperellide. (P. 333.) 
Esperiopsis fragilis V., sp. nov. Plate xxxvec, figs. 1-3. 
A very porous, fragile sponge, forming crusts or irregular masses 
15-20" or more thick, soft while living, friable when dry. Surface, 
as dried, irregularly pitted or vermiculate; subdermal channels irreg- 
ular, deep, often labyrinthiform, .5 to .7™™ wide, separated by walls 
made up of fine irregular meshes, hispid at the surface. 
Dermal layer thin, mostly destroyed, easily detached; pores micro- 
scopic, numerous; oscules scattered, small. Skeletal fibers delicate, 
composed mostly of numerous, closely packed, slender spicules. 
These are mostly slender tylostyles and styles, about .27 to .32™™ 
long, with smaller tylotes .16 to .21 long, with well-rounded ends. 
Microscleres numerous, very small sigmas (fig. 2, @, d@’), and isochele 
