HVDKOIDA. — BALE. 



59 



no trace of operculum or orifice. In places where they have 

 been detached a small basin-shaped portion of the base is often 

 left behind, it would seem probable therefore that the opening so 

 formed may be the normal channel of exit of the contents. 



The colour of the zoophyte varies a good deal, ranging from 

 a very light brown to a reddish tint. The hydrotheca? measure 

 from the point of the rostrum to the furthest point of the 

 adcauline side from '34 mm. (in the proximal ones) to *52 mm. 

 Single internodes of the rachis range from '33 to '59 mm., 

 double ones from "52 to 1*2 mm., hydrothecal internodes from 

 '3 to *36 mm. 



Though decidedly Statoplean in habit, the species seems, in its 

 minute structure, at least as nearly allied to the Eleutheroplea. 

 The situation of the hydrotheca in the axil of a process from the 

 intemode, is, as already mentioned, a distinctly Plumularian 

 character, and the mesial sarcotheca is also very similar to those 

 of some of the Eleutheroplea. And in the median sarcostyle 

 behind the hydrotheca we have a character by which the species 

 is closely allied to some of the species of Plumularia, as well as 

 to the series of forms which have been grouped under the genus 

 Kirchenpaueria. 



Luc. — Great Australian Bight, 40 to 100 fathoms. 



Genus Kirchenpaueria, Jiekeli. 



KIRCHENPAUERIA PRODUCTA Bale. 



Plumularia producta, Bale, Journ. Micro. Soc. Vict., ii., 1881, 

 p. 39, pi. xv., fig. 3 ; Cat. Austr. Hydr. Zoopb., 1884, p. 133, 

 pi. x., tig. 4 ; Trans, and Proc. Koy. Soc. Vict., xxiii., 1887, 



p. 96. Inaba, Zool. Mag. (Tokyo), No. 34, 1891, p. 



tigs. 09-70. 



Azygoplon productum, Bale, Proc. Linn. Soc. N.S. Wales, 

 (2) iii., 1888, p. 774, pi. xix., tig. 1-5. 



'Kirchenpaueria producta, Bale, Proc. Roy. Soc, Vict., 

 (N.S.) vi, 1893, p. 111. 



Halicomaria producta,Torrej.~Umv. California Publ., i., 1902, 

 p. 75, pi. x., fig. 95. 



Biplocheilus productus, Torrey, Univ. California Publ., ii., 

 1904, p. 35. Stechow, Abb. math.-phys. Klasse k. Bayer 

 Akad, Wissenscb., I. Suppl. Band, 1909, pp. 88, 89. 



