BIOLOGICAL SURVEY OF WOODS HOLE AND VICINITY. 
729 
Class UROCHORDA (TUNICATA).' 
Family Molgulid/E. 
Molgula arenata StimpsonA [Chart 190.] 
Gould, 1870, p. 21; Vcrrill and Smith, 1873, p. 
699, 419, etc. 
Region of Nantucket and Marthas Vineyard. — • 
Gould. “Vineyard Sound and Buzzards Bay, 
5 to 15 fathoms, sand and gravel.” — Verrill. 
Western half of Vineyard Sound, fairly fre- 
quent; Crab Ledge, at one station; not re- 
corded for Buzzards Bay; dredged in 2 to 25 
fathoms, on bottoms of sand, gravel, and 
stones. — Survey. 
Fish Hawk stations: 7532*, 7560 (abundant)*, 
7561 (few), 7579, 7584 (2), 7596 (1), 7598 (1), 
7609 (3 small)*, 7683*, 7702. 
Phalarope stations: 32, 33*, 37, 64 (several), 66 
(many), 67 ( 1 ), hi ( 1 ). 
? Molgula citrina Alder & Hancock. 
Crab Ledge at Fish Hawk station 7606 (16 fath- 
oms, gravel and stones), 1 specimen.* 
? Molgula koreni Traustedt. 
Vineyard Sound, at Fish Hawkstations 7524* and 
7563, 8 to 10 fathoms, gravel and stones. 
Molgula manhattensis (DeKay). [Chart 191.] 
Gould, 1870, p. 25 (Ascidia manhattensis ; no local 
records); Verrill and Smith, 1873, p. 699, 311, 
etc.; Bumpus, 1898a; Bumpus, 1898b; Met- 
calf, 1900. 
Abundant on piers at Woods Hole, Vineyard 
Haven, and New Bedford. Recorded also 
from Nobska Point, Menemsha Pond, Katama 
Bay (abundant on eelgrass), Wareham River, 
West Falmouth Harbor, Round Hill Point. A 
very common species, with great diversity of 
habitat, being found in shallow waters near 
shore, as well as at considerable depths. 
Dredged by the Survey at scattered stations 
throughout Buzzards Bay; in Vineyard Sound 
seldom found far from land. Taken in 2 to 15 
fathoms, on every sort of bottom. Large clus- 
ters composed of this species and Styela partita 
are sometimes encountered. 
Fish Hawkstations: 7522 bis, 7524 bis (few), 7554 
bis*, 7564 bis*, 7612*, 7614, 7615 (several clus- 
ters), 7616, 7619*, 7627 (several), 7653. Sup- 
plementary stations (1909): 7648 (?), 7659 (?). 
Phalarope and Blue Wing stations: 1 (several), 
5*, 8, 9, 12, 13, 20, 21, 24 (1), 32 (few), 61*, 67 
(1), 76, 83 (2), 85, 86, 87 (many), 100 (?), no, 
117 (few), 121 (few), 130 (1), 134 (1), 145 (i)- 
Eggs ripe during May and probably throughout 
the summer. — Bumpus. 
9 Molgula pannosa Verrill. 
Verrill, 1871, p. 55. 
Off West Chop, at Fish Hawk station 7524*, 1 
specimen doubtfully identified. — Survey. 
Molgula papillosa Verrill. 
Verrill, 1872; Verrill and Smith, 1873, P- 699, 
495- 
“Off Marthas Vineyard, 10 fathoms, stony,” 
occurring “sparingly.” 
9 Molgula pellucida Verrill. 
Verrill and Smith, 1873, p. 699, 426. 
No definite local records, though this region lies 
within the range of the species as given by 
Verrill. 
9 Molgula producta Stimpson. 
Gould, 1870, p. 21 (no local records); Verrill and 
Smith, 1873, p. 699, 502, etc. 
“Off Buzzards Bay, 23 fathoms;” this species 
“ was dredged in some numbers on a bottom of 
fine sand, with some mud.” (The foregoing 
record scarcely warrants the inclusion of this 
species in the fauna of the region.) 
Molgula sp. undetermined. 
Unidentified specimens referable to this genus 
were taken at Fish Hawk stations 7554, 7622, 
and 7686, and Phalarope station 160; also at 
1909 repetitions of 7648 and 7671. 
Bostrichobranchus molguloides Metcalf. 
Metcalf, 1900, p. 583 (sp. nov.). 
“ Collected by Vinal N. Edwards, from soft mud, 
at a depth of 9 fathoms, in Buzzards Bay, near 
Woods Hole, Mass.” A number of specimens 
taken . 
Eugyra pilularis Verrill. 
Verrill, 1872 ( Molgula pilularis and Eugyra pilu- 
laris ); Verrill and Smith, 1873, p. 700, 509. 
“Off Gay Head . . . , 19 fathoms, soft mud,” 
covering itself with a thick coating of fine sand 
or mud. — Verrill. 
Eugyra glutinous (Holier). c [Chart 190.] 
Dredged by the survey at a number of stations in 
vicinity of Cuttyhunk, both in the Sound and 
the Bay; 3 to 17 fathoms, sandy bottom. 
Fish Hawk stations: 7686 (?), 7687*, 7688 (?), 
7689 (?). 
Phalarope stations: 30*, 99*, 101 (?), 102 (?), 
103 (?)• 
identified by Prof. W. E. Ritter; those from points designated 
a Specimens from points designated by an asterisk (*) were 
by a dagger (t) by Dr. W. G. Van Name. 
b See note under Eugyra gluiinans. 
c it is not unlikely that some of the specimens listed in the field as Molgula arenata likewise belong here. “ Externally these 
two species are very much alike. Identification of preserved specimens is hardly possible without dissection. W. E. Ritter. 
