MATTHAI— RECENT COLONIAL ASTR^ID^ 



47 



LIST OF SPECIMENS SHOWING THE EXTENT OF VARIATION IN 



THE GENUS GYPHASTRE A— continued. 



No. of 

 Specimen 



11 



12 



13 



14 



15 



16 



17 



18 



19 



20 



21 



22 



Red Sea 



Salomon, Chagos 



Red Sea 



Salomon, Chagos 



Red Sea 



Suvadiva, Maldives 



Hulule, Maldives 



Red Sea 



Rotuma 



C. microphthalma 



C. suvadivce 



G. hempriohana 



Remarks 



Corallum (11 x 9 x 4 cm.) incrusting. Septa thin and 

 only slightly rough as in G. chalcidicum but no. 10, and 

 10. Perithecal spines almost smooth. PI. 12, fig. 7. 



Corallum (14x8x9cm.) raised into humps, identical 

 with Klunzinger's figured specimen of G. serailia. PL 

 12, fig. 5. 



Corallum (17 x 12 x 12 cm.) incrusting, resembles Klunzin- 

 ger's fig. of G. savignyi. Corallites shallow, 2-5 — 3 mm. 

 apart, sunk, only granules on peritheca. 



Corallum (15 x 8 x 17 cm.) large, raised into hillocks — 

 resembles Klunzinger's fig. of G. serailia — towards edge 

 similar to fig. of G. savignyi. PI. 34, fig. 4. 



Corallum (25 x 18 x 19 cm.) raised into humps on a large 

 substratum. In a flat valley corallites crowded, thin- 

 walled and columella rudimentary. Three giant coral- 

 lites each 2-5 mm. wide with 18 septa meeting columella. 

 PI. 12, tig, 4. 



Corallum (20 x 12 x 13 cm.) with hillocks and deep valleys. 

 Towards edge corallites shallow and closed in. Two 

 giant corallites, 2 5 mm. wide with 16 and 18 septa 

 meeting columella. PI. 13, fig. 7. 



Corallum small (12 x 9 x 5 cm.). Sindlar to G. chalcidi- 

 cum except in number of septa and dense columella — 

 peritheca in parts vesicular where spines few, short, 

 blunt, smooth, scattered, septa thin, only slightly rough. 



Corallum small (10 x 7 x 7 cm.) — great variation in number 

 of septa, a few corallites with 12 and 12, many with 10 

 and 10 or 9 and 9, some others with 8 and 8. 



Prof. Gardiner's specimens of G. suvadiva — small broken 

 pieces ; all flat, thin corallites shallow with a closed in 

 appearance, low thin perithecal spines, sometimes only 

 11 septa meeting columella. 



Corallum large (11 x 8 x 5-5 cm.) with even surface. Con- 

 dition typical on upper surface — on lower surface hardly 

 any perithecal spines, corallites not projecting, shallower, 

 hence columella visible. PI. 13, fig. 5 ; PI. 34, fig. 5. 



Corallum small (6x6x4 cm.) with low humps. Calices 

 somewhat shallow, hence columella visible with con- 

 spicuous rods. Septa usually 6, 4 and 10, only primaries 

 meeting columella. 



Prof. Gardiner's specimen of G. chalcidicum (16x10x7 '5 

 cm.) — rougher (perithecal spines and septa) than speci- 

 mens 20 and 21, also corallite-wall thicker and calices 

 somewhat wider (1'75 mm.), columella distinctly seen, 

 well developed, with conspicuous rods, septa 6, 6 and 12 

 primaries not much thicker or broader than secondaries, 

 the latter in some corallites meeting columella. PI. 13, 

 fig. 4. 



