No. 1] CALCAREOUS ALGÆ FROM FUNAFUTI. 7 



like a flake of stalagmite .... some large and d^sc-shaped Fora- 

 minifera .... The slab had no fresh break and therefore must 

 have been lying loose. There is every appearance of the large 

 disoshaped Foraminifera being insitu here". The slab is about 20 

 by 12 cm. and 2 — 3 cm. thick, but very irregular. The said 

 Alga forms a thin coat in the upper as vvell as lower part of the 

 slab, which appears to be composed of a rather great number of 

 animals, especially Corals and Foraminifera, on a section often 

 forming alternating layers. It bears numerous conceptacles of spo- 

 rangia as well as some scattered conceptacles of cystocarps. This 

 is the type referred to in my Notes. 



B. No. 15. Off Tutanga, Funafuti, 86 fathoms. Aug. 1898. 

 „ Fragments of a dead Coral broken off. One lump of concentric 

 Nullipore like an old boss of stalagmite; but very porous and much 

 bored, crusted with thin coat of purple Nullipore, tubes of Serpula, 

 small Lamellibranchs like Chama. Some giant Foraminifera. In 

 formation some bladdery green Algæ". These masses of Corals, 

 etc. are here and there coated with some young crusts of the pre- 

 sent species. Some very young leaves of other Florideæ are atta- 

 ched to the same masses, but the supposed green Algæ are not 

 to be seen, and it is impossible that such Algæ should live in such 

 a depth as montioned above. 



Lithophyllum craspedium Fosl. 



New or er. calc. Alg. p. 26. 



f. compressa Fosl. mscr. 



Lithophyllum craspedium Fosl. 1. c. 



f. abbreviata Fosl. mscr. 



The form compressa attains a considerable size, with coarse 

 and vigorously developed branches. In f. abbreviata the branches 

 are as a rule short with rounded thickened ends, and more den- 

 sely crowded, sometimes rather approaching certain forms of Litho- 

 phyllum racemus in habit. The specimens of this form that I have 

 seen are but 3—4 cm. in diameter, and the branches 3—5 



^flivio* 



y 



