Dr. F. Brliggeinauii on Stony Corals. 309 



The Manicina ^^areolata " of Ehrenberg (Abh. Berl. Akad. 

 1832, i. p. 327), quoted here by M. -Edwards and Haime, is, 

 from the description, quite different, and may be a true 

 TrachyphyUia. 



4. Antillia constricta. B.M. 



Coral short, turbinate, straight, with pointed base, appa- 

 rently free. Calicle much longer than broad, oblongo-elliptical, 

 with the sides in their middle deeply and regularly constricted 

 in the direction of the short axis, giving to the outline nearly 

 the shape of an 8 ; each of the four corners with a very slight 

 indication of an additional constriction. Epitheca well deve- 

 loped, covering half the height of the wall ; the latter rather 

 thin, with scanty but conspicuous exotheca, CostEU subequal, 

 prominent, almost cristiform, their edges with a single series 

 of crowded small and acute teeth. Edge of the calicle not on 

 the same level, much elevate in the constricted middle parts, 

 lowest at the extremities of the longer axis. Fossa deep. 

 Septa most regular, belonging to six complete cycles : pri- 

 mary, secondary, and tertiary ones subequal, thick, well 

 projecting, obtusely roimded on their summits ; their latei*al 

 surfaces covered with remote granules, which are arranged 

 towards the inner edge in oblique rows running to the mar- 

 ginal teeth ; their free inner edges in the upper half straight, 

 with small crowded acute teeth, then suddenly dilated to a 

 large paliform lobe, which is separated by a deep, acute or 

 rectangular emargination, and has its edge entire. Septa of 

 fourth cycle smaller and thinner, with irregularly and coarsely 

 dentate edge, the paliform lobe less pronounced and somewhat 

 toothed ; those of fifth and sixth cycles lacerately toothgd, 

 without paliform lobes. Columella well developed, linear 

 in outline, with even, more papillose than spongious surface, 

 dense, consisting of thin, filiform, subparallel trabeculte, most 

 of which are evenly furcate at the top. Height of coral 40 

 rnillims., longer axis of calicle 65 millims., shorter axis 

 45 millims., shortest diameter (in the constricted middle 

 parts) 25 millims. 



Ilab. Borneo {Sir E.. Belcher). 



The above description is taken from a single specimen; but 

 there is another coral (without indication of locality) in the 

 collection which seems to represent a more advanced stage of 

 growth of the same species : it is higher and heavier ,• the 

 epitheca ascends to five sixths of the height ; the costte are 

 thicker and more roughly dentate; the four smaller constric- 

 tions in the corners of the calicle are very conspicuous. In 

 all other respects it agrees with the type specimen, except that 



Ann. & Mag. N. Hist. Ser. 4. Vol. xx. 22 



