304 " ENDEAVOUR " SCIENTIFIC RESULTS. 



hydrocladia. Assuming that these are phylactocarps, they 

 differ from those of Cladocarpus in not being hmited to the 

 proximal internode, and also in several being borne on the 

 same hydrocladium. They originate on that part of the 

 internode which is between the node and the base of the 

 hydrotheca, and they may occur on two or three internodes in 

 succession ; I have not seen any on the proximal internodes. 

 Only three were observed, but there were scars marking the 

 positions where others had fallen. Each of the three con- 

 sisted of one very short internode, unarmed, succeeded by two 

 longer ones, clavate in form, consisting of a small closed 

 receptacle, ventricose on one side, beyond which projected 

 one or two lateral sarcothecse. The aspect of the ends of 

 these ramules was such as to indicate that their growth might 

 have been continued. 



It is impossible to be certain as to the exact relationship 

 of these ramules to the gonosome, as no gonangia were present, 

 nor any signs to indicate where they might have been detached. 

 The internodes, with their lateral sarcotheoae projecting from 

 one or both sides, are suggestive of atrophied hydrothecse, 

 biit apart from their small size (about one-third the length of a 

 hydrotheca), and their wholly different form, the little 

 ventricose receptacles consist of the internodes themselves, 

 and are not divided off from them as hydrothecae would be. 

 In view of the incomplete aspect of the ramules it seems just 

 pos ible that the gonangia may have been borne terminally 

 upon them. 



Cladocarpella multiseptata, s'p. nov. 

 (Plate xlvii., figs. 1-5.) 



Hydrocaulus about two inches in height, stem very slender, 

 slightly fascicled at base, divided by long oblique nodes into 

 internodes of very variable length ; hydrocladia at unequal 

 distances, biserial, alternate, both series borne on the front 

 of the stem and directed forward ; internodes long, nodes 

 oblique. 



Hyckothecae very long, slender, gradually expanding from 

 the middle to the aperture ; hydropore in the base of the cell, 

 next to the abcauline side, subtended by a small curved flap 

 of perisarc ; aperture at right angles, with a blunt anterior 

 tooth, narrowed in the middle, the rest of the border with 

 very minute irregular crenations, and adnate to the lateral 

 sarcothecse. Hydrotheca! internode with about 9-14 septal 

 ridges, transverse or nearly so, except the proximal one, 

 which is very oblique. 



