[LAMBE] SPONGES FROM COAST OF NORTHEASTERN CANADA 21 
Localities.—Gulf of St. Lawrence, 20 miles N. by W. of St. Paul’s 
Island, 100 fathoms, rocky bottom, A. M. Rodger, 4th of April, 1892, 
a fragment; Strait of Belle Isle, off Norman’s Light, 60 fathoms, rocky 
bottom, A. M. Rodger, 9th of April, 1892, a fragment; Davis Strait, 3 
miles from the mouth of Coutts Inlet, 130 fathoms, mud bottom, A. M. 
Rodger, 30th of July, 1892, two specimens, the largest of which is about 
3 cent. broad and 1°5 cent. thick, and part of a third that has grown 
round a worm tube. 
ESPERELLA FRISTEDTII. (Sp. nov.) 
(Plate I, figs 2, 2a-h.) 
Cladorhiza cupressiformis, Fristedt. 1887. Sponges from the Atlantic and 
Arctic Oceans and the Behring Sea (transla- 
tion), Vega-expeditionens vetenskapliga arbe- 
ten, p. 426, pl. 24, fig. 13 and pl. 27, fig. 11. 
There are in this collection three specimens from Davis Strait that 
agree so well in general shape and in spiculation with a sponge from 
the Siberian Arctic Ocean, referred to by Fristedt (op. cit.) under the 
name Cladorhiza cupressiformis, Carter, that the writer believes them 
to be the same specifically. The Siberian sponge is thought, however, 
not to be referable to Carter’s species and also to more properly belong 
to the genus Hsperella, in which genus likewise Hsperia cupressiformis, 
Carter, should probably be placed. Under these circumstances the 
name Esperella Fristedtu is proposed for Fristedt’s sponge and the Davis 
Strait specimens are included under the new name. 
The following is descriptive of the Davis Strait specimens:—Sponge 
upright, slender, consisting of an upper cylindrical part supported on a 
short, thin stem that below has an expanded root-like surface of attach- 
ment; from the upper cylindrical part spring numerous short, approxi- 
mately horizontal, thorn-like processes that are compressed laterally, 
their greatest diameter being in a vertical direction. The upper 
extremity is slightly attenuated and the lateral processes are either only 
indicated on the stem, or absent, leaving it quite smooth. It is moder- 
ately flexible, especially the processes which are pliant and elastic. A 
dermal membrane, overlying the soft parts, extends out over the pro- 
cesses forming a complete covering. Neither pores nor an oscular open- 
ing have been observed. Measurements taken from the largest, perfect 
specimen are as follows—total height 6:5 cent., length of stem a little 
