THE ANNALS 



AND 



MAGAZINE OF NATURAL HISTORY. 



[FOURTH SERIES.] 

 No. 118. OCTOBER 1877. 



XXXIII. — On the Salenidse, Wright. — Part 11. Observations 

 on the Morphology of Recent Salenise, and Description of a 

 neio Species. By P. Martin Duncan, F.R.S., Pres. Geol. 

 Soc. 



[Plate VIL] 



In the first part of this essay * I noticed the spheeridia and 

 pedicellarise of a specimen of a recent Salenia which I consi- 

 dered to be probably referable to the species described by A. 

 Agassiz, and named by him Salenia varispina ; and now I 

 proceed to the comparison of the other structures of the test in 

 the recent forms. But before doing so it is necessary to con- 

 sider the zoological position of the specimens. 



The specimen just noticed, and which has its spines and 

 buccal membrane intact, was covered here and there with deep- 

 sea ooze, in which were many Glohigerince. This sticky sub- 

 stance enveloped the pedicellarige, filled up the spaces between 

 the papillee on the apical disk, and only permitted a general 

 view of the abactinal system. Long and careful manipulation 

 at intervals has got rid of sufficient ooze, so that the correct 

 structural relation between this form and that described and 

 figured by A. Agassiz can now be decided. I now find that, 

 although there are some difterences in the nature of the 

 buccal membrane and in the numbers of the primary tubercles 

 of the two forms which may be accounted for by iheir being 



* Ann. & Mag. Nat. Hist., July 1877. 

 Ann. & Mag. N. Hist. Ser. 4. Vol xx. 18 



