574 
bulletin oe the bureau of fisheries. 
? Aglaophenia struthionoides (Murray). 
Verrill and Smith, 1873, p. 730 ( Aglaophenia 
arborea); Nutting, 1900, p. 102. 
“Shoals of Nantucket, 10 miles east of Sancati 
Head, 14 fathoms.” — Desor, cited by Verrill. 
Prof. Verrill now thinks that this species was 
recorded through an error, probably caused 
by mixing labels, as the species has not been 
taken otherwise except on the Pacific coast 
(see Nutting, 1900). 
Family PETASID.E. 
Gonionemus murbachii Perkins. 
Murbach, 1895 ( Gonionemus sp.); Thompson, 
1898 ( Gonionemus ); Nutting, 1901, p. 382 
( Gonionemus vertens)', Mayer, 1901, p. 5 
( Gonionemus murbachii, nom. nov.)“, Perkins, 
1902 ( Gonionema murbachii)', Hargitt, 1904, 
p. 53; Mayer, 1910, p.343,497. 
Abundant at Woods Hole, particularly in the 
Eel Pond. Recorded also from Vineyard 
Sound and Hadley Harbor, by Murbach ; from 
Vineyard Haven, by Hargitt, and from Muske- 
get Island, by R. L. Baird. Perkins calls 
attention to the fact that this now abundant 
species was first taken in 1894. Its more 
familiar habitat is among eelgrass, to which it 
clings by its tentacles. 
Sexual season from July to October. — Murbach. 
Period of maximum sexual activity from the 
middle of July to the middle of August; eggs 
extruded at dusk.— Perkins. It has been 
shown by Perkins that an inconspicuous 
hydroid phase occurs in the life history of this 
species, during which asexual multiplication 
by budding occurs. 
Locally this medusa has been an important 
object of experimental research. It survives 
transportation, and Dr. Perkins has kept 
specimens alive for six months in aquarium 
jars. 
Family TrachynEmidaE. 
Rhopalonema typicum (Maas). 
Hargitt, 1904, p. 54; Mayer, 1910, p. 378 ( Rho- 
palonema velatum). 
“Fragments taken in the tow in Vineyard 
Sound. ’ ’ — Hargitt. 
Family Ageaurid.e. 
Aglantha digitalis (Muller). 
Verrill and Smith, 873, p. 725, 454 ( Trachynema 
digitate)', Fewkes, 1881, p. 160 ( Trachynema 
a The species was only named in this paper, in a footnote. 
real description to Perkins. 
Aglantha digitalis — Continued. 
digitate)', Nutting, 1901, p. 381 ( Trachynema 
digitate)', Hargitt, 1902a, p. 553 ( Trachynema 
digitate)', Hargitt, 1904, p. 55 ( Aglantha digi- 
talis)', Mayer, 1910, p. 402 ( Aglantha digitate). 
“Woods Plole, July 1, young specimens.” — 
Verrill. Woods Hole, March to May. — C. W. 
Hargitt. Mr. G. T. Hargitt found sexually 
mature specimens in abundance, from April 
S to 11, 1908. 
Aglantha conica Hargitt. 
Hargitt, 1902, p. 21 (sp. nov.); 1904, p. 56; 1908, 
p. hi. 
Off Nantucket and off Chatham, in August, 
1902; Woods Hole, April 25 to 30, 1906; taken 
towing in 12 to 20 fathoms, likewise at sur- 
face. — Hargitt. 
Family GeryonidzE. 
Liriope scutigera McCrady. 
Fewkes, 1881, p. 162; Hargitt,- 1904, p. 56; 
Mayer, 1910, p. 421. 
Newport. — Fewkes. 
Glossocodon tenuirostris (Agassiz). 
Mayer, 1900, p. 165; Hargitt, 1904, p. 57; Mayer, 
1910, p. 421 {Liriope scutigera). 
Occasional at Newport. — Mayer. 
Family Cunanthid.-E. 
Cunina discoides Fewkes. 
Fewkes, 1881, p. 161; Hargitt, 1904, p. 57. 
Occasional at Newport. — Fewkes. 
Family Porpitid/S. 
Porpita linnceana Lesson. 
Fewkes, 1880, p. 140, Hargitt, 1904, p. 59. 
“Occasionally taken at Woods Hole, Vineyard 
Sound, Newport, R. I., etc.” — Hargitt. 
Fewkes notes having received “a dried 
specimen [of ‘Porpita’] preserved on paper 
after the manner of a plant, taken by a sailor 
not far from Nantucket. ” 
Family VelEllida;. 
Velella mutica Bose. 
Verrill and Smith, 1873, p. 737, 453; Hargitt, 
1904, p. 59. 
“Coming northward in the Gulf Stream as far as 
Nantucket,” recorded for August. — Verrill. 
“Occasionally taken in Vineyard Sound, Buz- 
zards Bay, and off Newport.” — Hargitt. 
No description was given. Mayer (.1910) now credits the first 
