392 Annals of the South African Museum. 



but may reach an even greater development ; ornatus shows a very 

 moderate development of tubercles. Or again, the two tubercles on 

 the posterior margin may coalesce to form a rounded transverse ridge 

 which occasionally develops a third (median) tubercle between the two 

 normal ones. 



The tubercle on the 1st segment is usually more prominent than 

 those on the 2nd and 3rd segments. 



In the specimen from Sebastian Bluff the two posterior tubercles ou 

 the head are equal in height to the length of the head, but normally 

 all 4 tubercles are not at all prominent. 



The tubercles on the 4th marsupial plate vary from 2 to 7. 



The flagellum of antenna 2 in both sexes has 2 rows of denticles ou 

 the under surface, not only the one on the inner margin as in my 

 original description. Tattersall could not see any in his specimen 

 of ornatus, but I think they must have been present ; they are rather 

 difficult to make out sometimes, especially the row on the outer inferior 

 margin. The suture between the 2nd and 3rd joints is also very 

 obscure sometimes, the third joint appearing to consist merely of the 

 apical tooth or unguis. 



The male appendage, which I described as situate on the 7th peraeon 

 segment, is really on the 1st pleou segment. 



Of the variety subglaber no further examples have come to light. 

 Nor have I found any transitional forms between this and the typical 

 form, so that I still keep it as a variety. 



Additional Localities: Bakkoven Rock NW. by W., distant 2 miles 

 (False Bay). 24 fathoms. 2 <$ , 3 $ $ ; Walker Point (near 

 Knysna), NE. by N. N., distant 7 miles. 47 fathoms. 10 gg, 

 3 $ $ ; Sebastian Bluff W. by N. N., distant 6 miles. 28 fathoms. 

 1 $. s.s. "Pieter Paure." 11/11/02, 11/10/00 and 5/7/00. Also 

 several $ <$ and $ 9 from the previously recorded locality off Eobben 

 Island. 



ARCTURELLA LINEATA (Stebb.). 



1873. Ardurus lineatus Stebbing, Ann. Mag. Nat, Hist, (4), vol. 12, 



p. 97, pi. 3A, fig. 3 (<J). 



1875. id. ibid. (4), vol. 15, p. 187. 



1914. (?) Barnard, Ann. S.A. Mus. vol. 10, pt. 7, p. 207. 



Body glabrous, minutely granular in <$ , subcylindrical. Head not 

 broader than long, antero-lateral processes rounded with a point on 

 outer margin near apex, surface smooth. Peraeon segments 2 and 3 

 slightly widening in ? ; segment 4 much longer than wide, in $ 18 : 8,. 



