"endeavour" scientific results. 172 



diameter at the end is less than at the middle, so that they 

 contrast strongly with those of the '' wine-glass " type. As in 

 all the allied forms the snpracalycine sarcothecaj spring from a 

 pair of lateral enlargements of the hydrocaulus, these enlarge- 

 ments however are so slight that they do not appear in a side 

 view, consequently the so-called " pedunculate " appearance of 

 the sarcothecaa is not apparent. 



I have not seen the male gonangia, hut have little doubt they 

 will be found to agree in form with those of the closely-allied 

 P. campanula. 



The specimens wei - e found mixed with the root-fibres of a 

 larger Plumularian (Aglaophenia armata). 



Log. — Thirty eight-miles north-east of North Reef Light- 

 house, Capricorn Group, off Port Curtis, Queensland, 74 fathoms. 



Plumularia sulcata, Lamarck. 



(Plate xxxv., figs. 6-7.) 



Plumularia sulcata, Lamarck, Anim. s. Vert., 1816, p. 128; 



* Bale, Cat. Austr. Hyd. Zooph., 1884, p. 145; Billard, 



Ann. Sci. Nat.. 9 ser., v, 1907, p. 321 ; Ritchie, Mem, 



Austr. Mus., iv, 1911, p. 852, pi. lxxxiv, fig. 3, pi. Ixxxix. 



fig, 5 ; Id., Proc. Roy. Soc. Edin., xix, 1913, p. 6. 



Plumularia aglaophenoides, Bale, Cat. Austr. Hydr. Zooph., 

 1884, p. 126, pi. x, fig. 6. 



Hydrophyton reaching eighteen inches or more in height, 

 poly si phonic, with numerous ascending branches, stem and 

 branches thick, flexuous, giving rise to two series of monosi- 

 phonic pinnately-disposed alternate branchiets, one from each 

 flexure; branchiets continued uninterruptedly from some of the 

 fascicle-tubes of the stem or branch, their proximal portion 

 separated from the rest by two distinct oblique joints, less dis- 

 tinctly jointed for the rest of their length, bearing hydrothecas 

 as well as hydrocladia. Hydrocladia alternate, close, one on each 

 internode of the branchiets, both series borne towards the front 

 and supporting a hydi-otheea on each internode ; nodes oblique, 

 sometimes very strongly marked at or near the ends of the 

 hydrocladia, but mostly obsolete. No septal ridges in the 

 internode. 



Hydrothecee large, close, campanulate, set at an angle of about 

 45°, border circular, entire except at the back, which has a 

 broad sin nation. 



