376 FUNAFUTI ATOLL. 



branches; the summits are usually obliquely truncated, and either 

 acute or evenly rounded. The larger branches bear from two to 

 three lobe-like branchlets similar to those figured by Moseley in 

 the " Challenger " Report.* 



The specimen measures 17 cm. by 8 cm. at the base ; the main 

 branches are from 3 to 6 cm. wide at their origin, and from 1 -2 to 

 2 cm. in their shorter diameter. 



Form B. The specimen consists of a compressed branched frond 

 19-5 cm. high, 7 cm. wide at the base, and 1'7 cm. in thickness. 

 At a distance of 8 cm. from the base there arise two main 

 branches ; each gives oft* a few flat lobes at the sides and termin- 

 ates in three or four subpalmate lobes. 



Form C. Consists of an antler-like reticulate frond, with widely 

 divaricate and frequently coalescent branches ; they are either 

 alternate or opposite, and subdichotomous, especially near the 

 summits. The terminal branchlets are a little compressed in the 

 plane of branching ; the rest, including the basal portions, vary 

 from oval to subquadrate in transverse section, and measure from 

 1 to 2 cm. in diameter. 



Another specimen is intermediate in habit between forms B 

 and C. 



The general surface in all the examples is characterised by 

 numerous small elevations upon which the pore systems are 

 situated ; this is especially marked on the younger parts of the 

 corallum, elsewhere they are not so conspicuous. 



The gastropores are usually about 0'28 mm. in diameter, and 

 from 1 to 2 mm. apart, they are somewhat crowded, but rather 

 irregularly distributed. The dactylopores are about 0'18 mm. in 

 diameter, they are very numerous and not distinctly arranged in 

 cycles except on the younger parts of the colony. 



The surface reticulation is rather coarse as compared with other 

 species; the ridges are on an average fully O'l mm. apart. 



MlLLEPORA TORTUOSA, Dana. 



Millepora tortuosa,, Dana, U.S. Explor. Exped., Zoophytes, pi. Hi., 

 figs. 3-3a. ; Synop. Rep. Zoophytes, p. 105. 



This species is represented by a single specimen, closely re- 

 sembling Dana's figure. The main branches are, however, a little 

 broader, varying from 5 to 12 mm. in width. The whole surface 

 of the branches is covered with very fine slight elevations upon 

 which the pore systems are situated. The gastropores are very 



* Moseley Challenger " Eeport Zool., ii., pi. xiii., fig. 3. 



