Dr. R. K. Greville on a new species o/Caulerpa. 197 



has often failed me, or done me but a slippery service. But in 

 what I have stated above, I do not lean upon my memory. On 

 the contrary, I rest only upon documents which admit of no 

 contradiction. 



Not to dwell any longer upon blunders and slips of memory, 

 I again affirm, as I did in my communication of April last, that 

 had MM. Edwards and Haime, in their great essay on British 

 Oolitic Corals (published in 1851), charged the University of 

 Cambridge with unwonted illiberality, because the Oolitic corals 

 of our Museum had not been sent to Paris, their charge would, 

 in letter, have been true ; although (after what took place during 

 their visit to Cambridge) it would, I think, in spirit have been 

 both uncourteous and unjust. But they let that occasion slip ; 

 and when their charge at length appeared (in 1852), in their 

 essay on the British Paleozoic Corals, it came in such a form 

 as not merely to be wanting in courtesy, but to be incompatible 

 with common historical truth : for, most assuredly, no application 

 had been made to Cambridge for a loan of a single Pakeozoic 

 coral. 



XXII. — Notice of a new species of Caulerpa. 

 By H. K. Greville, LL.D. &c* 



[With a Plate.] 



The Alga which forms the subject of the present notice was 

 communicated to me for determination along with several others, 

 by my friend Professor Balfour ; and was collected in Bass's 

 Straits, Australia, by Mr. James E. Cox. 



Singularly variable in external conformation as are the species 

 of this fine and most natural genus, presenting no fewer than 

 six or seven well-defined groups, it will be at once perceived that 

 the present one differs entirely from them all. In general habit 

 it stands alone ; and upon a closer view may be said to unite 

 those which possess a dendroid character with others which have 

 a more simple, plane, and pinnate or pinnatifid frond. 



The prostrate stem is robust, branched, 12 inches or more, 

 probably, in length, rough with linear simple or forked pro- 

 cesses (abortive ramuli), and altogether strongly resembling the 

 creeping stem of a Lycopodium. The fronds are erect, arising 

 singly, or often two together, 4 to 7 inches high, of an ovate- 

 oblong outline, and bushy like some species of Bryopsis. The 

 numerous ramuli are given off on all sides, an inch or more 



* Read before the Botanical Society of Edinburgh, July 13, 1854. 



