THE SEKTULAKIIXK. 57 



. " Gonothecie borne on stem: sessile, ovate with a wavy outline and broad 

 round aperture; half as broad as long. Single gonophore centrally i>laced. with m-no-arcal 

 processes connecting il on all sides with gonothecal walls." (Torre\.) 



i. San Diego. San ( 'leiuente Island, San IVdro. California. 1-42 fathoms (Torrey). 

 Station L".i: J ,H, hit. N. :;:', :'.i;'. long. \V. 1 1.x on' :>,o". L'T fathoms. 

 ii In the collection of the ["nivcrsity of California. 



SERTULARIA RATHBUNI, new name. 

 (Plilte III, tiL's. 4 9. 



Thiiiiiriii at i-tiiliiriniilt-s AM. MAX,' Memoirs Mils. Comp. Xonl., II, 1.S77, p. 28. 



Desiiiosci//i/inx ilnlmnxi VEKSI.I-Y.-, Mydraires < 'alvptoblastes reciirillis dans la MIT de. Antilles, 1899, p. 38. 



'f/'/iji/inxiii/K . Colony consisting of main stem and irregularly disposed rigid branches. 

 attaining a height of three inches. (Allman.) Stem without nodes on distal portion, with irreg- 

 ularly disposed nodes on ]>ro\iinal portion where the internodes are long and tend to hear each 

 ii single pair of hydrothecae. 1 1 vdrotheca' strictly opposite, roughly tubular, narrowing some- 

 what at both ends, contingent in front for about half their height, .separated behind, ending in a 

 margin with two large lateral and one small superior tooth, the latter inconspicuous and easily 

 overlooked. Operculum with three Haps or valve-,. 

 e. Not known. 



. Gulf of Mexico (Allman); Dry Tortugas, 4."> in. ( Versluys). . I ///// v.v,v Slat ion 

 2389, lat. N. 29 28', long. \\ . .x7 :.>'; depth. 27 fathoms. 



It- seems to me to be altogether likely that Allman has figured the posterior aspect of this 

 species, which will account for the separation of the pairs of hydrothec;e as shown in his figures. 

 The tigure given bv Vcrsluys'-' and that drawn by me agree with Allman's figures. The three 

 teeth of the hvdrothene might easily be mistaken for two. unless special care were taken. They 

 are unmistakably present, however, in my specimens. 



Type in the Museum of Comparative /oology, Cambridge, Massachusetts. 



SERTULARIA GRACILIS Hincks. 



I Plate 111, Ii-. 10.) 



,S' 'liii/iirin /iiniiilii I'm-. Pi. JniixsTiix, Piriti'li /.m.|iliytrs, 1S4S, p. 469. 

 N riii/iii'/ii ijriirH'm MASSAI.L. MSS. (according to Hincks). 

 \-i-liiltii-iti i/riiriHx HIMKS, lii-ilisli Ilyilmiil 5C(Mi|ihyti-s, ISUS, p. 262. 

 M-rtii/iii-iu i/riiri/ix VEKKII.I., Am. Jouni. Sri. and Art,. X, 1S75, \i. 43. 



Kfrlii/iirin i/riii-i/ix MAKKTAXXEU-TI-KXEKETSCIIEK, Hydr. desk. k. Ilofinnscuiiis, ISilil. p. L'40. 

 K-ilix PKTKT and P.KIIOT, Ki's. Camp. Sc. Ilimndclli-, XVIII. IIHNI, p. _:;. 



TTOI>JI/IX<IIIH:. Colony small, rarely attaining a height of : ', inch. Stem not fascicled, slender, 

 often unbranched. divided into long and irregular internodes. Branches irregular, often want- 

 ing, and like the stem in all particulars. Hydrothecse strictly opposite, pairs distant, the mem- 

 bers of a pair contiguous in front and with their distal half free and regularly curved outward: 

 margin with two opposite teeth and a two-flapped operculum. 



tliiiiuxiiiin . GrOnangia home on front of stem, large, obovate, with a wiile neck and narrow 

 but distinct collar, and evident operculum. 



Di>ttr!biif!ii. Naushon. Coast of Massachusetts (s|jeciinen in I'. S. National Museum): 

 Shetland (Norman): St. Malo(v. Maren/cller). 



This species was formerly confounded with .S'. jnmii/ii. but is much more .-lender and delicate. 

 with more distant hydrothecae. 



'In clian^rin<; the -emiH of thi;- s]-ries tn Sfi-lnlm-in the name wmild 1 im- x. i-lnlnri'i .-< rinlnriniili x. a name lire- 

 occupied by Bale, Catalogue of the Australian Ilydrnid X.oopliytes, 1SS4. 



'-Hydraires Calyptoblastes recueillis dans la Mer des Antilles. ISDII, p. 39, tig. 8. 



