BIOLOGICAL, SURVEY OF WOODS HOLE AND VICINITY. 
559 
Family DESMacidonidaS. 
Esperella modes ta Lambe. 
A specimen thus identified by Dr. Cushman was 
taken in Buzzards Bay, near Cuttyhunk, at 
Fish Hawk station 767 1 (9 fathoms, stones and 
muddy sand). 
^Esperella fibrexilis Wilson. 
Wilson (1891, p. 511) refers to “Esperella fibrexilis 
(n. sp.)” as “abundant near Woods Hole, 
Mass.,” but no description is offered nor cited 
and the authors are not aware that any such 
has been published. 
Esperella sp. undet. 
A sponge referred to this genus by Dr. Cushman 
was found in some numbers by Dr. Osburn on 
the New York Yacht Club pier at Vineyard 
Haven July 31, 1906. It was much excavated 
by a tube-dwelling amphipod. 
Desmacidon palmata (Johnston). 
Crab Ledge, at 6 stations; extreme western end 
of Vineyard Sound: 1 station. Dredged in n 
to 20 fathoms, sand, gravel, and stones. Some 
of these were large specimens and they were of 
a dark-red color when fresh. 
Fish Hawk stations: 7603 (many)*, 7604 (1 small 
piece), 7605 (several), 7606 (many), 7607 
(many), 7608 (few pieces), 7721*. 
?Isodictya sp. 
Verrill (1873, p. 742) thus lists a sponge washed 
ashore after storms in winter at Nantucket, 
Vineyard Sound, and elsewhere. It is said by 
him to resemble “Isodictya palmata Bower- 
bank,” i. e., the Desmacidon palmata listed 
above. 
Myxilla sp. 
Specimens referred to this genus by Dr. Cushman 
were dredged along the western shore of Buz- 
zards Bay (Phalarope stations 137, 141), in 4 
fathoms, sand and gravel. 
Microciona prolifera (Ellis & Solander.) [Chart 13.] 
Verrill and Smith, 1873, p. 741, 409, etc. 
Vineyard Sound.— Verrill. Scattered stations 
throughout Vineyard Sound and Buzzards 
Bay, particularly in the upper half of the lat- 
ter, and at the mouth of Wareham River, where 
large colonies thrive; dredged in 2 to 13 fath- 
oms, on all sorts of bottoms. — Survey. Regard- 
ing the life history of this sponge Verrill 
writes: “This species, when young, forms 
broad, thin, bright red incrustations over the 
surfaces of stones and shells ... at a later 
period, rises up into irregular lobes and 
tubercular prominences, which eventually 
become elongated and subdivided into slender 
branches . . .” 
Fish Hawk stations: 7521 bis (incrusting rock)*, 
7543 (incrusting broken Echinarachnius)* , 7619 
( ?), 7620 ( ?), 7629 ( ? several large masses), 7631 
(?), 7633 (?), 7648 (? few masses, incrusting), 
7663 ( ?), 7680*, 7731*, 7734*, 773 6 *> 7768*, 7777. 
7780, 7781 (incrusting Busycon shell), 7783. 
Supplementary stations (1909): 7648, 7653, 
7659, 7671, 7672. 
Phalarope stations: 60 ( ?), 136 (few colonies), 138 
(many), 142 (1 colony)*, 149*, 151 (dead), 155 
(on several shells)*, 156*, 158 (many, large and 
branched)*, 159(1 mass), 163 (several colonies, 
one on the back of Libinia), 165 (few), 167 
(abundant on shells). Supplementary stations 
( I 9°9) : 79, i6 5- 
bis, 7525 bis, 7526 (3), 7530 bis, 7603 
appearance like Grantia), 7616, 7630, 
Sponges undetermined. 
Fish Hawk stations: 7524 (abundant; gray, incrusting), 7524 
(1 piece, several inches long), 7605 (1 piece), 7606 (1, in 
7653, 7690, 7783. 
Phalarope stations: 56, 74, 130, 137, 141, 145 (common), 158 (large brown mass). 
Phylum COELENTERATA. 1 
Class HYDROZOA. 
Family Clavid,E. 
Clava leptostyla Agassiz. 
Verrill and Smith, 1873, p. 734, 328, etc.; Bum- 
pus, 1898, p. 487; Bumpus, 1898b, p. 857; 
Hargitt, 1901, p. 305; Nutting, 1901, p. 327. 
Woods Hole, on piles of Bureau of Fisheries 
pier; also from rockweed in “the Hole.” — 
Bumpus. Woods Hole, Hadley Harbor, etc. — 
Hargitt. “Rocks near the Hole.” — Nutting. 
Clava leptostyla — Continued. 
By Verrill not specifically recorded for this 
region, but said to grow “in clusters on the 
fronds of Eucus at low-water mark, on the 
most exposed shores.” Not encountered in 
the Survey dredging. 
“Breeding hydroids” recorded by Bumpus in 
March. Reproduces in spring or early sum- 
mer. — Hargitt, MS. notes. 
a Specimens from points designated by an asterisk (*) were identified by Prof. C. V\'. Hargitt. Specimens from points desig- 
nated by the dagger (f) were identified by Prof. C. C. Nutting. 
16269° — Bull. 31, pt 2—13 2 
