MADEEPOKA. 187 



Var. rugosa. 



A specimen from the Banda Sea agrees with the types in habit, but the slender elongate 

 corallites are more numerous and more spreading, often 8 to 10 mm. long and only 1 mm. 

 diameter, not tapering. The wall is very thin and fragile, but quite strongly rugose and 

 echinulate near the base ; general surface pitted and armed with short erect plates fringed 

 with delicate echinulations. 



Indo-Pacific Ocean : Fiji, Banda Sea, ? Singapore. 



a. South Seas. Purchased. 41. 12. 11. 1. -) 



^i, Singapore? Purchased. 39. 11. 11. 12. I Types. 



C.Singapore? Purchased. 43.3.6.130. J 



<^. Fiii Reefs. H.M.S. 'Challenger.' 86.12.9.243. ( = M. ecAmate, Quelch.) 



e- Fiji. F. M. Rayner, Esq. [P.]. 62. 2. 4. 33. 



Var. rugosa. 



a. Damma Is., Banda Sea. H.M.S. ' Penguin.' 92. 4. 5. 7. 



b. Aperture of axial corallites suddenly contracted. 



201. Madrepora longicyathus. 



Madrepora longicyathus, M.-Edwards & Haime, Coralliaires, t. iii. p. 148 ; ? non Verrill, Bull. Mus. 



Comp. Zool. 1864, vol. i. p. 41 ; Studer, Mitth. naturf. Ges. Bern, 1880, p. 19 {nm MB. Akad. 



"Wiss. Berlin, 1878, p. 531 ; non Ortmann, Zool. JB. 1888, Bd. iii. p. 150). 

 ? Madrepora prolixa, Verrill, Proc. Essex Inst. 1866, vol. v. p. 22. 



Corallum erect, closely resembling that of M. echinata in habit, but provided with 

 stouter branchlets and corallites. Main branches 2 cm. diameter near the base, lateral 

 branchlets 4 to 6 mm., sometimes flattened, length up to 2*6 cm. ; the more simple ones 

 consist of a single elongate corallite sometimes 1*2 cm. long. The longer branchlets usually 

 bear one or more lateral, subalternate corallites, short nariform at first, but becoming tubular 

 and more spreading with increase in size. The free extremity of a branch always consists of 

 a more or less elongate tubular corallite, tapering a little towards the apex ; about 7 mm. 

 long, a little over 2 mm. diameter near the base, and 1'5 mm. at the apex ; aperture strongly 

 contracted, with six septa of moderate breadth in all but the youngest corallites, directives 

 a little broader. Corallum only slightly porous ; surface finely echiuulate, with a variable 

 number of elongate and narrow pits. 



The above description is founded on the type specimens in the Paris Museum. The 

 species differs from M. echinata in the strongly contracted aperture, the stouter branchlets 

 and corallites, and in the absence of immersed corallites on the stem and main branches. 



a. New Guinea. Saville-Kent Coll. 92. 6. 8. 300. 



