458 PROCEEDINGS: BOSTON SOCIETY NATURAL HISTORY. 
distributed in northern Europe, and occurs about Greenland, so that 
its occurrence on the Labrador coast or even farther south would not 
be strange, but as its resemblance to Bostrichobranchus pilularis 
is very close, not only externally, but internally also in the case of 
young specimens, a confirmation of Packard's record would be 
desirable. 
Bostrichobranchus pilularis (Verrill). 
PL 43, fig. 1-4; PI. 44, figs. 5, 6; PI. 69, fig. 137; text-fig. 1. 
1871. Molgula pilularis Verrill, Amer. Journ. Sci., ser. 3, vol. 1, p. 58, fig. 4c-» 
1871. Molgula pilularis Verrill, Amer. Journ. Sci., ser. 3, vol. 2, p. 361. 
1872. Eugyra pilularis Verrill, Amer. Journ. Sci., ser. 3, vol. 3, p. 211, pi. 8, 
fig. 3. 
1873. Eugyra pilularis Verrill, Amer. Journ. Sci., ser. 3, vol. 6, p. 440. 
1873. Eugyra pilularis Verrill and Smith, Rept. on Invertebrate Animals 
of Vineyard Sound, pp. 509, 700, pi. 33, fig. 249. 
1874. Eugyra pilularis Verrill, Proc. Amer. Assoc. Adv. Sci., vol. 22, pp. 
348, 352, 368. 
1874. Eugyra pilularis Whiteaves, Amer. Journ. Sci., ser. 3, vol. 7, p. 7. 
1874. Eugyra pilularis Verrill, Amer. Journ. Sci., ser. 3, vol. 7, pp. 40, 46, 
413. 
1879. Eugyra pilularis Verrill, Preliminary Check-list of Marine Inverte- 
brates, p. 27. 
1883. Bostrichobranchus manhattensis Traustedt, Vidensk. Meddel. Natur- 
hist. For. Kjobenhavn, 1882, pp. 109, 128. 
1891. Eugyra pilularis + Bostrichobranchus manhattensis + Molgula pilularis 
Herdman, Journ. Linn. Soc. London, Zool., vol. 23, pp. 564, 569. 
1898. Eugyriopsis manhattensis Pizon, Ann. des Sci. Nat., Zool., ser. 8, vol. 7, 
p. 318. 
1898. Eugyriopsis manhattensis Pizon, Comptes Rendus Acad. Sci. Paris, 
vol. 126, p. 1816. 
1898. Eugyriopsis manhattensis Pizon, Bull. Mus. d'Hist. Nat. Paris, vol. 4, 
p. 273. 
1900. Eugyra pilularis + Herdmania bostrichobranchus (also Bostricho- 
branchus molguloides) Metcalf, Zool. Jahrbticher, Anat., vol. 13. 
pp. 520, 521, 583fi^, pi. 36, fig. 33-37. 
1901. Eugyra pilularis Whiteaves, Geol. Survey Canada, pub. no. 722, p. 271. 
1901. Eugyra pilularis Kingsley, Proc. Portland Soc. Nat. Hist., vol. 2, p. 182. 
1907. Bostrichobranchus manhattensis Seeliger, Bronn's Tier-reich, vol. 3, 
suppl., p. 1192, text-fig. 218. 
1909. Eugyra pilularis + Bostrichobranchus 7nanhattensis + B. molguloides 
Hartmeyer, Bronn's Tier-reich, vol. 3, suppl., pp. 1319, 1320. 
1912. Bostrichobranchus molguloides Michaelsen, Mitth. Naturhist. Mus. 
Hamburg, no. 28, p. 155. 
