90 PROFESSOR W. A. HERDMAN ON THE 



The Dorsal Tubercle has its long axis antero-posterior and its opening at the side. 

 The horns form two close spirals, both coiled inwards. Whether P. patagonica of 

 MICHAELSEN is also the same species as P. horrida is very doubtful. I am inclined to 

 regard it as distinct. 



Family CYNTHIID.*. 

 Boltenia legumen, Lesson. 



Locality. Station 118, on hulks, Stanley Harbour, Falkland Islands, about twenty 

 specimens ; and eight specimens from 6 fathoms, Port Stanley, February 2, 1904. 



There are over two dozen specimens of this species in the collection, and they range 

 in size from 1 - 5 to 7 cm. in greatest length of body about the same range as in the 

 case of those in the Challenger collection. All of these specimens of B. legumen belong 

 to the "forma typica" of MICHAELSEN'S system* of subdivision of this species, and 

 agree in character with the Challenger specimens from the same locality. In some 

 cases the little bristles on the surface of the test are more abundant and more prominent 

 than in others, but there are all gradations between. This is evidently a very common 

 Ascidian in shallow water at the Falklands. 



Fungulus antarcticus, u. sp. (Plate, figs. 15 to 18.) 



A single specimen which clearly belongs to the rare and interesting genus Fungulus 

 was obtained at Station 301 from a depth of 2485 fathoms, on March 13, 1903, at 

 lat. 64 48' S., long. 44 26' W. ; temp. 31 '02. The genus was established in 1882 for 

 another solitary individual found in the Southern Ocean during the Challenger Expedi- 

 tion, at Station 147, between the Cape of Good Hope and Kerguelen Island, lat. 46 

 46' S., long. 45 31' E. ; depth, 1600 fathoms, on a bottom of Globigerina ooze. The 

 two localities are thus nearly 3000 miles apart, but agree in that both are in the far 

 south and in very deep water. 



The Scotia specimen, although closely related to the Challenger Fungulus cinereus, 

 Herdman, cannot be placed in the same species. The general appearance and anatomy, 

 and especially the remarkable structure of the branchial sac, are the same ; but the 

 relation of the peduncle to the apertures and the details of structure are different in 

 the two forms. The description of F. antarcticus is as follows : 



The body is club-shaped (fig. 15), like a rounded knob about 1'5 cm. in diameter 

 on the summit of a short, stout peduncle, which is also about 1 '5 cm. in length and 

 from 4 to 6 mm. in thickness. The peduncle is continuous with the ventral edge of 

 the body, while the dorsal edge projects markedly. The surface is smooth and the 



* " Die Holosomen Ascidien des magalhaeiiisch-siidgeorgischen Gebietts," Zoolotjica, Bd. xii., Heft 31, Stuttgart, 

 1900, ] i. 109. 



(ROY. SOC. EDIN. TRANS., VOL. XLVIIL, 308.) 



