MADREPORARIA. 



781 



Characters 



1. Size of Calices. 



2. Depth of Calices. 



3. Edges of Calices. 



4. Costae. 



5. Number of Septa. 



6. Character of Septa. 



7. Columella. 



8. Section a. Exotheca. 

 h. Endotheca. 



c. Septa. 



9. Growth characters 

 and epitheca. 



10. Locality. 



11. Colour. 



Echiiwpora rosiilaria (Lmk.) 



3x4 mm. or round. 



1 mm. 



Little cones, 1 — 3 mm. high. 

 Septal spines thin, 1 mm. 

 high. 



Very close set, fine lines, 

 made up of fine, low 

 ('5 mm.), rounded spi- 

 nules. 



16-24 



I and II cycles subequal, 

 rough and thick at edge 

 of calice with 3 blunt, 

 rough teeth, 2 on exsert 

 upper edges, the 3rd and 

 innermost, only present 

 on about half, quite pali- 

 form ; III very minute 

 and thin. 



About J breadth of calice, 

 spongy, dense, very fine 

 trabecidae from about 10 

 septa. 



Scarcely visible, very dense. 

 Not clear, horizontal (?). 



Fenestrated ; especially line 

 outside pali lobes which 

 are hence true pali. 



14 specimens, largest a foli- 

 ated cup 13x18x9 cm. 

 deep, '5 cm. thick, most 

 merely folia, one incrust- 

 ing 3-.5 cm. thick. Epi- 

 theca 2 '5 cm. from edge 

 which is evenly costu- 

 lated, smooth or minute 

 spines. 



Common, W. Reef, Hulule, 

 foliated masses 2 feet or 

 more across, and a small 

 piece from Felidu, 14/. 



Green. 



Echinopora solidior (Ed. <$; H.) 



6x5 mm. or round. 



2 mm. 



Flat. Thick spines from 

 aliout 15 septa, 2 mm. 

 high, subequal. 



Edge of colony lines of 

 flattened rough spinules, 

 1 mm. high ; central part 

 irregular. 



24—30 



About 18, larger, rough, 

 thick at edge of calice, 

 no distinct teeth, rather 

 more than half with a 

 small thick paliform 

 tooth. Bet ween last about 

 10 very minute septa. 



Similar to last, but much 

 less dense and from about 

 18 septa. 



Dense, vesicular. 

 Horizontal, 5 mm. 



thin. 

 As last. 



apart, 



A single foliimi 7x10 cms. 

 by 18 mm. thick in centre. 

 Epitheca to 5 mm. of edge, 

 otherwise .same as last. 



Pas.sage into Hulule. 



Brown. 



Echhiapora lertia, n. sp. 



5 — 7 mm. x same. 



1'5 mm. 



Flat. Septa not more than 

 1 mm. exsert, thin. 



At edge lines centre irregu- 

 lar; vary from round, 

 smooth to characters of 

 last, always thinner, 

 •75 mm. high. 



36—48 



Typically I and II larger 

 and subequal, rough, up- 

 permost tooth over theoa 

 longest, lowest where pre- 

 sent very fine and sub- 

 paliform, III similar but 

 thinner; IV minute, com- 

 monly bend round and 

 fuse with 111 at middle 

 of their breadth. 



Similar to last, rather hol- 

 lowed in centre from 

 about 14 septa. 



Very dense, vesicular. 

 Irregular, little vesicular, 



dense. 

 Perforated at edges ; no 



true pali. 



Two thick masses, largest 

 10 X 14cm. by 4cm. thick, 

 incrusting thin at edges. 

 Epitheca, etc. same as 

 last. 



Edge of S.W. Reef, Hulule. 



Green- brown. 



Comparison and Characters of Echinopora rosularia, solidior and tertia (see p. 782). 



100—2 



