3 26 W. M. Bole: 



Desinoscyphus hrevicyatliua, Versluvs, Mem. Soc. Zool. df 



France, xii., 1899, p. 40, figs. 9-10. 

 Sertularia infiatu, Jaderholm, Ark. f. Zoul. k. svenska 

 Veteuskapsakad, i., 190."5, p. 286; Vanhoffeii, Deutsche 

 Siidp.-Exp., 190l-:3 xi.. 1910, p. :521, f. .-Jg ; Stechow, 

 Zool Jahrb., xxxii.. 1912, p. ;U)1. 

 Sertularia versliii/si. Nutting, x\mer. Hydr. — Sert., 190-4. 

 p. 53, pi. i., f. 4-9; Billard, Actes.. Soc. Lin. Bord.. 

 Ixi., 19()(;, p. 74; id., C. K. Acad. d. Sci., cxlviii., 1!)0!). 

 p. 194; id.. Bull. Mus. Hist. Nat., xiii.. 1907, p. 27."); 

 Congdon, Proc. Amer. Acad. Arts and Sci., xlii., 1907, }>. 

 481; Ritchie, Proc. Zool. Soc. Lond., 1907, p. 505, fig. 

 144, pi. xxiv., fig. 2-6; Fraser, Bull. Bureau of 

 Fisheries, xxx., 1912, p. 375, fig. 40. 

 Sertularia J>revicyathtis, Nutting, Amer. Hydr. — Sert., 1904, 



p. 60, pi. vi., figs. 1-2. 

 Sertularia twrhinata, Billard. An. Sci. Nat.. 1> ser.. xi., 



1!)10, p. 19 (in partK 

 Not Dynaintna turhiiiata, Lamouroux,_ Hist. Polyp. Cor. 

 Flex., 1816, p. 180; id., Encyc. Meth., ii., 1824, p. 290. 

 Not Sertularia furhi/iata. Lamarck, An. s. Vert., 2nd Ed., 

 ii., 1836, p. 154. 

 Hydrophyton monosiphonic, pinnate (rarely simple) often under 

 half an inch in height, but sometimes reaching two inches. Proxi- 

 mal portion of the stem without pinnae or hydrothecae. Pinnae 

 alternate, each home on a distinct process at the base of a stem- 

 intei'node, wliicli supports also an unpaired hydrotheca in the axil, 

 and a pair of sul)-alternate hydrothecae above. First internode of 

 ■each pinna short, without hydrothecae, separated from the next 

 internode by an oblique conspicuous joint, at which it readily 

 separates; joint between the first internodi' and tlie rladojdiore 

 straight, often less distinct or <)i)solete; nodes slendci- and oblique, 

 or straighter, and less distinct. 



Hydrothecae of the i)innae or sinqde shoots in pairs, opposite, 

 mostly in contact in front, short and stout, with a slight oblique 

 fold or ridge crossing them about the middle; aperture nearly ver- 

 tical, with two large pointed triangular lateral teeth, and sometimes 

 with a third smaller tooth above. 



Gonotliecae oblong, compressed and lenticidar in transverse sec- 

 tion (flattened behind and convex in front), with seveial distinct 

 transverse annulations; the superior angles i)ro(luced upwai-ds into 

 two large incuived luu-n-like processes; aperture narrow. 

 Colon idess or l)rownish. 



