574 



BULLETIN OF THE BUREAU OF FISHERIES. 



lAglaophenia 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^. 



Gonionemus murbachii Perkins. 



Murbach, 1895 (Gonionemus sp.); Thompson, 

 1898 (Gonionemus); Nutting, 1901, p. 382 

 (Gonionemus vertens); Mayer, 1901, p. 5 

 (Gonionemus murbachii,nom.nov.) a ; 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 TRACHYNEMID^. 



Rhopalonema typicum (Maas). 



Hargitt, 1904, p. 54; Mayer, 1910, p. 378 (Rho- 

 palonema velatum). 



"Fragments taken in the tow in Vineyard 

 Sound." Hargitt. 



Family AGLAURID^. 



Aglantha digitalis (Miiller). 



Verrill and Smith, 873, p. 725, 454 (Trachynema 

 digital?); Fewkes, 1881, p. 160 (Trachynema 



a The species was only named in this paper, in a footnote, 

 real description to Perkins. 



Aglantha digitalis Continued. 



digitale); Nutting, 1901, p. 381 (Trachynema 

 digitale); Hargitt, 19023, p. 553 (Trachynema 

 digitale); Hargitt, 1904, p. 55 (Aglantha digi- 

 talis); Mayer, 1910, p. 402 (Aglantha digitale). 



"Woods Hole, July i, young specimens." 

 Verrill. Woods Hole, March to May. C. W. 

 Hargitt. Mr. G. T. Hargitt found sexually 

 mature specimens in abundance, from April 

 5 to n, 1908. 

 Aglantha conica Hargitt. 



Hargitt, 1902, p. 21 (sp. nov.); 1904, p. 56; 1908, 

 p. in. 



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 GERYONID^E. 



Liriope scutigera McCrady. 

 Fewkes, 1881, p. 162; Hargitt, 1904, p. 56; 



Mayer, 1910, p. 421. 

 Newport. Fewkes. 



Glossocodon ienuiroslris (Agassiz). 

 Mayer, 1900, p. 165; Hargitt, 1904, p. 57; Mayer, 



1910, p. 421 (Liriope scutigera). 

 Occasional at Newport. Mayer. 



Family CUNANTHID^. 



Cunina discoides Fewkes. 



Fewkes, 1881, p. 161; Hargitt, 1904, p. 57. 

 Occasional at Newport. Fewkes. 



Family PORPITID^. 



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 



Velella mutica Bosc. 

 Verrill and Smith, 1873, p. 737, 455; 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 



