ON THE HYDROIDS OF THE SCOTTISH NATIONAL ANTARCTIC EXPEDITION. 69 



five, and tapering somewhat towards their distal ends ; hydrothecse campanulate, 

 even-rimmed, usually on long pedicels. In the present specimens there are present 

 none of the tendril-like stolons mentioned by most writers, but this is not surprising, 

 since in most cases the distal end of the colony is awanting. 



Gonosome. Not present. 



Locality, etc. Port Stanley, Falkland Islands; 64 fathoms. 3rd February 1904. 



Campanularia tincta, Hinks, 1861. 



This species is represented from one locality, that from which HARTLAUB (1905) has 

 described his specimens. The Scotia specimens, while apparently belonging to this 

 species, show a considerable resemblance to C. cylindrica, Allm. (1876, p. 114), from 

 which they differ in their diminutive size and in the absence of ringing at the base of 

 the peduncle. The present specimens, which are from 1'5 to 2 mm. high, have a 

 corrugated peduncle averaging some 0'9 mm. in height and surmounted by a ball-like 

 segment which bears the hydrotheca. The hydrothecse are about 07 mm. long by 0'3 

 mm. in diameter, almost cylindrical, and narrow sharply at the base. The margin is 

 divided into twelve blunt teeth and is frequently marked by a regeneration line. The 

 gonosome is awanting. 



Locality, etc. Creeping on weathered hydroid stems, Port Stanley, Falkland 

 Islands. 3rd February 1904. 



Campanularia, sp. (PI. I. fig. 2.) 



Lack of material forbids the assigning of a specific name to this form. Delicate 

 simple stems about 3 mm. high and 0'05 mm. in diameter arise at irregular 

 intervals from a creeping tubular stolon. The hydrothecse are deep, campanulate, 0'8 

 mm. in length by 0'5 mm. in greatest diameter, with their cavity cut off from that of the 

 stem by a distinct partition. Their margin is divided into twelve or fourteen teeth, a 

 delicate line sometimes following the curves of the teeth just within the edge. The 

 hydrothecse, which are marked by delicate, longitudinal lines passing from the notches 

 between the teeth to the base, are borne upon peduncles about 3 mm. long with 

 several rings at the top. These rings seem to be fairly constant, two deep constrictions 

 giving rise to two ball-like divisions which are followed by an indistinctly ringed 

 portion of the peduncle, cut off from the remainder, which is smooth, by another deep 

 constriction. 



Gonosome. Not present. 



Locality, etc. Growing on Staurotheca reticulata, Scotia Bay, South Orkneys. 

 Depth, 65 fathoms. Date, 25th March 1903. 



The specimen approaches C. Hinksii (Alder, 1857), but the typical campanulate 

 form of the hydrothecse, the blunt teeth, and the peculiar markings on the peduncle, 

 distinguish it from the parallel-sided hydrotheese, the square-topped teeth, and the 



(ROY. soc. BDIN. TRANS., VOL. XLV., 527.) 



