AND OTHER MEDITERRAKEAN^ LOCALITIES. 17 



These connecting tubes have usually but one rosette septum, 

 but occasionally there are two, with tbe parenchym tbreads 

 attached to both and passing through the junction (see 

 figs. 11 and 12.) 



Loc. Adriatic, Naple?, Marseilles, Eapallo, Riou and Podesta 

 {Marion), Bonifacio ; Straits of Magellan, New Zealand, Port 

 J ackson, Portland (Victoria), Mauritius, Cape Verd Is., Kerguelea 

 Island, Japan. 



Beania mirabilis, Johnst. (Pi. 2. fig. 1.) 



In the Rapallo specimens tbere are normally two radicals to 

 each zooeciiun, and this would seem to be generally the case. 



The position of the septum a short distance from the parent 

 zooecium appears to be constant. There is no septum in the 

 neighbourhood of the new zooecium. The septal division takes 

 place in the stolon very soon after its formation. 



Although there is no " Kapsel," the position of the septum may 

 be compared with that in the stolon of HypopTiorella expanm, 

 Ehlers; namely, immediately beyond each new zooecium. 



Beakia hirtissima. Heller, var. robfsta, Hinchs. 



Diachoris hirtissima, H., form robusta, Hincks, Ann. Sf Mag. Nat. Hist. 

 ser. 5, vol. viii. p. 74, pi. v. figs. 9, 9 a ; Waters, Journ. Micro. Soc. ser. 2, 

 vol. V. pi. xiv. fig. 5 (mandible). 



This form occurs fairly abundantly at Naples, Capri, and 

 Rapallo. It often has the avicularium showing on the dorsal 

 surface instead of in front. There is no definite radical as in 

 £. hirtissima var. typica, but there are often numerous fibres on 

 the dorsal surface, which in some cases look like spines, in others 

 more resemble the rooting-fibres. 



In a specimen from New Zealand the distal spines are rather 

 smaller than in the Mediterranean specimens, but both these 

 and the marginal spines correspond in structure and position. 

 In the New Zealand specimen the ovicell is larger than in those 

 from Naples, with the mandible nearly twice as wide and with 

 the distal end round. 



Hiucks described this variety from Algiers. 



BEAifiA hirtissima, Heller, typica. 



Diachoris hirtissimia. Heller, Bry. Adriat. Meeres, p. 94, pi. i. figs. 6, 7. 

 I have characteristic specimens from Eapallo. The usual arma- 

 ture may be taken as 7 stout spines round the oral aperture close 



LINN. JOURN. — ZOOLO&T, VOL. XXYI. 2 



