BIOLOGICAL SURVEY OF WOODS HOLE AND VICINITY. 



559 



Family DESMACIDONID^. 



Esperella modesta Lambe. 



A specimen thus identified by Dr. Cushman was 

 taken in Buzzards Bay, near Cuttyhunk, at 

 Fish Hawk station 7671 (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: i 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 (i 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 Nan tucket, 

 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*, 7736*, 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 (i colony)*, 149*, 151 (dead), 155 

 (on several shells)*, 156*, 158 (many, large and 

 branched)*, 159 (i mass), 163 (several colonies, 

 one on the back of Libinid), 165 (few), 167 

 (abundant on shells) . Supplementary stations 

 (1909): 79, 165. 



Sponges undetermined. 



Fish Hawk stations: 7524 (abundant; gray, incrusting), 7524 bis, 7525 bis, 7526 (3), 7530 bis, 7603 

 (i piece, several inches long), 7605 (i piece), 7606 (i, in appearance like Grantia), 7616, 7630, 

 7653, 7690, 7783. 

 Phalarope stations: 56, 74, 130, 137, 141, 145 (common), 158 (large brown mass). 



Phylum COELENTERATA." 



Class HYDROZOA. 



Clava leptostyla Continued. 



By Verrill not specifically recorded for this 

 region, but said to grow "in clusters on the 

 fronds of Fucus 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. 



Family 



Clava leptostyla Agassi?. 



Verrill and Smith, 1873, p. 734, 328, etc.; Bum- 

 pus, 1898, p. 487; Bumpus, iSgSb, 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. 



a Specimens from points designated by an asterisk (*) were identified by Prof. C. W. Hargitt. Specimens irom points desig- 

 nated by the dagger (t) were identified by Prof. C. C. Nutting. 



16269 Bull. 31, pt 2 13 2 



