40 



MADREPORARIA. 



k. Singapore. ? 



I. Locality not recorded. 



{k and I, 78. 6. 6. 18, 93. 4. 7. 2, are two fragments, aj^parently fold.s or branclied 

 protuberances broken off a large specimen. They are probably the same as 

 the T. dichotoma of Verrill, and T. maxima of Ortmann. 

 m. Eoebuck Bay, West Australia. Saville-Kent Coll. 



n. King's Sound, West Australia. Saville-Kent Coll. 



C. Cups hardly modified. 



0. ? Tonga. 



D. Tall, solid, vasiform, centre killed by deposit of sediment. 



J), q. Mauritius. 



E. Younger cups, with margins frilled. 



r. (Witli T. spcciosa) North Australia ? 

 s, t, u, V. Shark's Bay. 



w. Malay Seas. ' 



X, y. Eoebuck Bay, West Australia. 

 z. Locality unknown. 

 a!. Locality unknown. 



J. J. Lister, Esq. 



Saville-Kent Coll. 

 Ex Coll. Ind. Mus. 

 Saville-Kent Coll. 

 [Register No. 82. 4. 18. 2.] 

 [Register No. 47. 1. 19. 12.] 



F. Cups showing greater tendency to form protuberances than to frill 



h'. ? Singapore, 

 c'. Locality not recorded. 

 d'. (With T. spcciom) Port Denison. 

 c'. Wide Bay, Great Barrier Reef. 

 f. Somerset, Cape York. 



Saville-Kent Coll. 

 Saville-Kent Coll. 

 H.M.S. ' Challenger.' 



G. Very young specimens, unmodified. 



^. Locality not recorded. 

 h'. North- West Australia. 

 i'. Great Barrier Reef. 

 j', k'. Roebuck Bay, West Australia. 

 I'. King's Sound, West Australia. 

 m'. (Dead) Port Denison. 

 n'. (Witli T. f alula) Great Barrier Reef. 



[Register No. 82. 4. 18.] 



Saville-Kent Coll. 

 Saville-Kent Coll. 

 Saville-Kent Collr 

 H.M.S. ' Alert.' 

 Saville-Kent Coll. 



This last specimen is interesting. Two minute cups, attached side by side, but nowhere 

 fusing, differ cliiefly in the average size of the calicles. I do not think, however, that so small 

 a difference can be considered specific. The cup with the larger calicles was labelled 

 T. 2>dtata by the late Mr. George Brook ; I have provisionally labelled the other T. jMtula, the 

 smaller size of the calicles being, according to Milne-Edwards, the chief distinguishing 

 character. While the two species contain corals which are clearly specifically distinct, they 

 shade off into one another so gradually that it is impossible to decide for certain whether some 

 specimens approach more nearly the one type or the other. 



