762 J. STANLEY CxARDINER. 



9. Coeloria pachychila (Ehrb.). Klz., p. 15, i. 6. 



A single half ball-shaped specimen agrees with this species in every respect. The width 

 of the valleys from the tops of the ridges is generally about 7 mm., and depth 5 mm. 



Locality. Maldives, brought to me by a native who stated that he obtained it from the 

 Male reef-flat. 



10. Coeloria sinensis (Ed. and H.). 



Ed. and H., ii. p. 416, and Gard., p. 742, XLVi. 3. Coeloria edwardsi, Gard., p. 744, XLVI. 6. 



I refer fourteen specimens with some doubt to this species, the mode of which lies much 

 nearer C. edwardsi. The species shows almost as much variation as C. arabica, Klz., but 

 it diflfei-s from it in its regularly smaller sized (breadth and depth) calicular rows, which 

 show no tendency to vary in their mode so as to approach C. arabica. 



In their charactei-s the specimens vary between the two above-cited species, most rather 

 approaching towards C. edwardsi. The series are generally long and increase by their out- 

 pushing at the edges of the colony over its basis of support ; subsequently they are divided 

 up by transverse partitions, but, where growth is not luxuriant, this may be compared 

 almost to a process of budding from the ends of the series. Their breadth varies from 

 3 — 6 mm., average across parallel valleys 3 — 4 mm., sinuous valleys 4"2 mm., where growth 

 unfavourable larger but never more than .5 mm. The theca is quite perfect, "5 — 1 mm. thick 

 varying up to 2 mm. owing to deposition of endotheca. Septa, 11 — 16 in 1 cm. (average 

 of 55 being 13'5), 8 — 13 reaching columella (average 10"4), '5 mm. exsert, continuous over 

 walls, square above rather than pointed, finely toothed, precipitous slope to the bottom of 

 the valleys. Columella seldom more than 3 mm. below u})per edges of theca, at first fused 

 thickenings of septal sides, often at this stage ending in spines flattened parallel to the 

 direction of the valley, and varying with its depth. When a valley is very shallow, owing 

 to boring organisms underneath or other causes, the columella may approach in appearance 

 the condition in Leptoria, though generally it is quite inconspicuous. When growth is slow 

 and the valleys are broad, the line of fusion of the septal edges may be joined by additional 

 pi'ocesses from the septal sides, so that the columella maj' appear to consist of a relatively 

 bi'oad line of trabecular substance. The endothecal dissepiments number 15 — 18 in 1 cm., but 

 vary in individual specimens. 



Locality. Common over the reef-flats of Minikoi and the Maldives; found also on the 

 outer slopes and occasionally on the lagoon shoals. 



11. Coeloria daedalea, Ell. and Sol. Gard., p. 741, XLVI. 1 and 2. 

 Three specimens from Hulule, W. reef and passage through same. 



12. Coeloria astraeiformis, Ed. and H. Gard., p. 743, XLVI, 4. 



Two specimens from Minikoi, reef-flat and lagoon to the south. This species is possibly 

 only a facies of the last. 



13. Coeloria cooperi, n. sp. (PL LX. fig. 9.) 



Colony massive, with distinct costae but no epitheca showing at the edge. Series of 

 moderate length (longest 6 cm.) and twisted, average breadth about 11 mm., 4 — 9 mm. deejj 

 (average 6 mm.), calices rarely circumscribed. Walls solid, thin and pointed, often at upper 

 ends a little fenestrated, apjjarently formed by thickenings of the septal sides. Septa, thin, 



