NEW ENGLAND HYDROIDS 45 



Calycella pygm-Ea Hincks. 



Under the name Calycella }uiitingi,i^o Hargitt has described a small species 

 of Cah/cella. I have found specimens that answer to his description and 

 measurements but I see no reason for considering them different from 

 Hincks' Calycella pyc/ma-a.^'^ Yeriill reported C. pygnuva from Fishers 

 Island Sound, Conn., and from Casco Baj, Me. This is probably the same 

 species that I have obtained and also that Hargitt has collected. There 

 is a difference of opinion as to whether C. pygmcea can be considered as 

 specifically distinct from C. syringa and it will not help matters to intro- 

 duce into the question still another species that seem to agree in all respects 

 with at least one of these. 



LOVEXELLA CLAUSA {L0V€)l) . 



Two species of Loienella have been reported from the New England 

 Coast. Yerrill reported Loienella (Calycella) producta (Sars) from deep 

 water off the Maine Coast, 12 Nutting reported Loienella grandis^^ from 

 Newport Harbor, and this was later reported from Woods Hole by Har- 

 gitt." 



Last summer Mr. Yinal Edwards gave me some surface tow to look 

 over, and in some of this marked ** Woods Hole, Feb. 21, 1902," I 

 found a fragment of a colony of Loienella clausa. I found specimens of 

 this species at Beaufort and in my Beaufort paper have shown that the 

 species which Clarke described as Loienella gracilis from Chesapeake Bay,i5 

 is the same species Loienella clausa. The three species are easily dis- 

 tinguished. L. clattsa has 8 pieces in the operculum. L. gramlis has 10 and 

 L. producta 12 or more. There are other differences in mode of growth, 

 etc., but the opercular character is constant and is readily recognized. 



FlLELLUM EXPANSUM LcVlHSCn. 



The species, Filellum expansutn, is a very cosmopolitan form, being found 

 in many waters of the Northern Hemisphere. Though it has not previously 

 been reported from Woods Hole, it is distributed all along the coast, as I 

 have found it from Canso, N. S., to Beaufort, N. C. The hydrothecae are 

 quite minute and when, as is often the case, they are distributed at rather 

 distant intervals along the stolon, they may easily be overlooked. When 

 one has once recognized them, they are so characteristic that they can 



"• Xew and little known hydroids of Woods Hole. Biol. Bull., vol. XYII, no. tj, 

 1909, p. 378. 



" cf. Ann. and Mag. Xat. Hist.. 4th ser. XIII, 1874, p. 149, pi. VII, fig. 15. 



'- Results of recent dredging expeditions on the Coast of Xew England. Amer. Jour, 

 of Science and Arts, Vol. TII, 1874, p. 413. 



13 Hydroids of the Woods Hole Region, 1901, p. 354. 



"Biol. Bull., Xo. 2, 1908, p. 112. 



1^ Hydroids from Chesapeake Bay. ilem. Boston Soc. Xat. Hist., Yol. Ill, 1881, p. 

 139, pi. IX, figs. 25-39. 



