. MUSEUM OF COMPARATIVE ZOOLOGY. 17 
spicula are much like those of the lower part of the calicles, but elsewhere they 
are smaller oblong forms, blunt at both ends. The terminal calicles on the 
outer branchlets are the largest and most prominent; those on the sides of the 
larger branches are shorter, oblique, and verruciform, with swollen bases. 
The following specimens were dredged by the Blake, 1877-80. 
Station. Fathoms. Locality. Specimens. 
1877-78. 
29 955 N. Lat. 24° 36’, W. Long. 84° 5! 1 
1878-79. 
256 370 Off Grenada 1 
1880. i 
Vv. 288 Off Santiago ‘ 1 
VIL. 610 N. Lat. 17° 28’ 30”, W. Long. 77° 30’ 1 
XVIII. 600 6 18° 20’ 30”, 6 87° 16’ 40” 3 
Acanella spiculosa VeERRILL, sp. nov. 
Mode of branching unknown, except that the branches originate from the 
horny joints. Axis in the branches very slender; calcareous joints long, solid, 
white; horny joints very short, orange-yellow. Ccenenchyma composed of nu- 
merous large, more or less crooked, fusiform spicula. Calicles elongated, more 
or less cylindrical, usually somewhat enlarged at the summit and slightly 
swollen at the base; summit armed with eight large, rather stout, sharp, pro- 
jecting spicula; sides of the calicles covered with similar large, fusiform spic- 
ula, mostly somewhat obliquely placed, and curved to correspond to the surface 
of the calicles; those at the bases of the calicles are usually larger and very 
crooked, intermingled with some of smaller size. 
Length of the larger calicles, from 3.5 to 4.5 mm.; diameter, 1.25 mm. 
Only a single specimen of this species has been seen, consisting of two small 
branches, one of which gives rise to a single small, lateral branchlet. It closely 
resembles A. eburnea, but is distinguished by the very much larger size of the 
spicula in the basal part of the calicles, and in the cenenchyma. 
Station 222, in 422 fathoms, off St. Lucia, Blake Expedition, 1878-79. 
Acanella simplex VerRILL, sp. nov. 
Rather slender, apparently unbranched. Calcareous joints long, slender, 
distinctly suleated, solid (in the several joints examined); horny joints short, 
dark brown. 
Calicles numerous, prominent, rather long, cylindrical or enlarged distally, 
covered with stout, often curved, blunt or not very acute, finely warted, oblong 
or fusiform spicula, and armed at the margin by eight similar spicula of some- 
what more elongated form, but less acute than in most other species. The 
base is supported by similar large, often much curved spicula. Similar large, 
fusiform spicula extend a little beyond the base of the calicles, in the thin 
ceenenchyma, becoming smaller away from the calicles; the ccenenchyma is 
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