36 ME. A. W. WATERS ON THE MARINE 



as a generic character, but also in several cases as a specific one. All the 

 same the IAckendporce have yet to be brought into order, and to do this 

 we require more spirit-specimens ; but to place as synonyms what I con- 

 sidered as L. novce-zelandice, Busk, L. Holdsworthii, Busk, and L. victoriensis, 

 Waters, does indeed seem retrograde. Harmer's 'Siboga' specimens must 

 be called L. Holdsworthii, Busk *. 



Since I wrote on the ovicells, among others, two specimens from 

 Ceylon, named by Busk L. Holdsworthii, have been added to the National 

 Collection. The central part is somewhat depressed with an ovicell ular 

 wall covering it, and the rays extend into the ovicell ; by the side of 

 this there is an oceciostome tube, and on one of the specimens at a higher 

 level there is an ovicell spreading in and out between the rays. 



These Cape Verde specimens of L. irregularis are not, as Norman supposed, 

 what I called Radiopora pustulosa t, d'Orb., from Naples, each subcolony of 

 which has some multiserial and some uniserial rays, and the subcolonies are 

 much larger than those of the Cape Verde Island forms. The specimens 

 alluded to, from Naples, are not closely attached, nor were Peach's L. mean- 

 drina. Although unable to see any material difference between the recent 

 and fossil R. pustulosa, there is some uncertainty in identifying a fossil about 

 which we know little, and therefore it would have been a safer course to have 

 named the recent one L. neapolitana, as it does not seem to be the same as 

 L. hispida, Flem. The specimens of L. meandrina, Peach, in the Nat. Hist. 

 Museum from Busk's and Hincks's collections, have much smaller suBcolonies 

 than what I called pustulosa, d'Orb., and the zooecia are O07-0 - 08 mm., while 

 the cancelli are about O06 mm. — that is, smaller than in pustulosa, where 

 they are about 0*1 mm., with the zooecia about O09 mm. 



In the Museum specimen of " meandrina " the subcolonies are often very 

 elongate, instead of circular, and there are more definite serial ridges than 

 in the solitary L. hispida, Flem., and we may certainly doubt the advisability 

 of considering the composite form a variety of hispida. Peach's figure and 

 description of L. meandrina correspond more with the Mediterranean 

 pustulosa than do the Museum specimens, which are not from Peach's 

 collection. However, I think we have as separate species L. irregularis, 

 Johns., L. pustidosa, d'Orb. (Waters), and L. meandrina, Peach. The ovicells 

 are unknown in the last two species. Other composite species are L. pristis%, 

 MacG., L. magnifica, MacGr., L. bidlata, MacC, and several fossil ones are 

 knownas-L. {Radiopora) formosa^, d'Orb., L. {Radiopora) Francqua?ia\\, d'Orb., 



* There is, however, a small specimen from between Nusa Besi and N.E. point of Timor 

 (St. 282) with long erect biserial rays, which may almost be said to be small bundles of rays, 

 and the central zooecia are very irregular. This I cannot consider to be the same species as 

 the other so-called nova-zelandice. 



t Pal. Franc, pi. 649. figs. 1-4. % Trans. Hoy. Soc. Vict. vol. xx. (1883) p. 126. 



Pal. Franc, pi. 782. figs. 1, 2. || Pal. Franc, pi. 782. figs. 3-8, 



