1909.] MARINE FAUXA FROM MERGUI ARCHIPELAGO. 909 



Dendrophyllia coccinea M.-Edw. & Haime. (Plate LXXXYI. 

 figs. 7 «, i, c, d.) 



CcejwjJsammia coccinea M.-Edw. & Haime. 



Two small colonies, one consisting of bnt four individuals, the 

 other of eleven. Colonies 10 to 20 mm. high x^espectively, indivi- 

 dual corahites rising from 2 to 6 mm. from the general coi'allum, 

 Costse well-marked on individual corallites, but lose definition on 

 the general coi'alliTm, coarsely covei'ed with granulations. Lip of 

 calice nearly circular, not thickened. The columella is small and 

 is joined by the septa of the first two cycles. Septa in four cycles 

 of six systems, but the systems are very irregular and have 

 already been detailed in the discussion on the genus. Septa of 

 the first two cycles beset with longitudinal rows of conspicuous 

 granules and having irregular somewhat denticulate inner edges ; 

 those of the third and fourth cycles are porous and highly denti- 

 culated at their inner edges. 



Locality. — Station XXIV. Oat and Kitten. Bottom : rock, 

 sand, and broken shell. Depth : 8-22 fathoms. 



It is not without much hesitation that I identify this species as 

 Denclrojjhyllia coccinea [Coenojjsammia coccinea M.-Edw. & Haime). 

 The last-named authors have noted the similarity between C. coc- 

 cinea, C. ehrenhergiana, and C. gaimardi, also between C. urvillii 

 and C. tenuilamellosa. Klunzinger [21] does not distinguish 

 between C. coccinea and G. ehrenhergiana : the species in question 

 from Burma, bearing as it does points of similarity with both 

 these and also with C. tenuilamellosa, suggests that all the above- 

 mentioned five species are varieties of one variable species. 



In general appearance, septal arrangement, and the irregula.rity 

 of the orders of septa the Burmese species resembles C. tenui- 

 lamellosa, but diflfers from it in having a very much reduced 

 columella and septa . covered with coarse granules; in these 

 characters it resembles C. coccinea, but the granules of the septa 

 of the latter are described as very small, which can hardly be said 

 of the species under discussion. Klunzinger has remarked great 

 variability in the development of the cohuiiella in individuals of 

 the same colony, and therefore discounts it as a distinguishing 

 specific character. 



The Burmese species is intermediate between C. coccinea, 

 G. ehrenhergiana, and G. temtilamellosa ; I therefore give it the 

 generic and specific names that have priority — Dendro'phyllia 

 coccinea. 



Dendrophyllia robusta Bourne. (Plate LXXXVI. fig. 6.) 



Lobopsammia robusta Bourne. 



Three colonies, all considerably smaller than the original speci- 

 men described by Bourne, but, as has been already suggested in a 

 previous part of this paper, size cannot be regarded as a character 

 of any specific importance. The largest calice of the Burmese 

 s})ecimens measures 12x8 mm., the smallest 5"3 X 5 mm.; and 



