MATTHAI— RECENT COLONIAL AHTUMIBJE 



57 



LIST OF SPECIMENS SHOWING THE EXTENT OF VARIATION IN 

 THE GENUS EGHINOPORA. 



Eemarks 



Coin, Peros, Chagos 



Seychelles 



10 



11 



12 



13 



14 



Salomon, Chagos 



Hulule, Maldives 



Coin, Peros, Chagos 



Salomon, Chagos 



Dongonab, Red Sea 



» (?) 



B. hirsutissi'ma 



E. gemmacea 



Corallum 14 x 9 x 7 cm. A ring of about 12 paliform 

 lobes in corallites. Columella one-third width of calyx. 

 Perithecal spines shorter than type. PI. 14, fig. 3. 



Specimen large, 28 x 14x2 cm. Corallites projecting up 

 to 4-6 mm. increasing in diameter from free margins 

 (up to 3 mm.) to bases (up to 5 mm.). Primaries and 

 secondaries similar, thinner than in type specimens. 

 PI. 14, fig. 4. 



A small edge-piece (10 x 7 cm.). Corallites level with 

 surface. About 24 thin septa, 12 meeting columella, all 

 slightly exsert. Columella one-quarter to one-third width 

 of calyx. Largest calyx 2-5 mm. in diameter, resem- 

 bling E. striaUda, Stud. 



Specimen 13 x 11 cm. Columella indistinct. A ring of 

 12 paliform lobes present. PL 14, fig. 5. 



Specimen 13x9 cm. Corallites projecting up to 4 mm., 

 primaries much thicker than secondaries. Columella 

 rudimentary one-fifth to one-quarter width of calyx. PL 

 14, fig. 6. 



Corallum (14 x 10 x 7 cm.), with the tertia facies. 



Specimen small, simulates E. lamellosa. PL 14, fig. 7. 



Specimen flat (17 x 14 cm.). Calices larger than in type 

 sjDecimens up to 8 mm. in diameter. Septa up to 44, 

 up to 22 meeting columella; primaries usually much 



thickened in their outer halves. 



PL 15, fig. 2. 



Corallum 13x8x4 cm. with the te^-tia facies but calices 

 larger, up to 7'25 x 5 mm. Septa up to 44, up to 19 

 meeting columella — resembling Milne-Edwards and 

 Haime's type of E. helli. PL 15, fig. 3. 



Corallum incrusting on a large irregular mass (33 x 30 x 23 

 cm.) and rising into a great many branching hillocks. 

 Corallites and peritheca very coarse. Corallites on hil- 

 locks jDrojecting in all directions vertical, horizontal and 

 oblique, in valleys level. PL 16, fig. 8. 



Corallum 17 x 13 x 10 cm. On one side costae thin and 

 perithecal spines slender, few and only slightly rough ; 

 on another side typical. PL 37, fig. 6. 



Corallum (11x8 cm.) incrusting on a concavo-convex 

 surface. Corallites projecting obliquely towards edges, 

 sometimes almost horizontal, height up to 9 mm. Peri- 

 thecal spines very short or absent. PL 15, fig. 6. 



Corallum (13 x 14 cm.) broten off', with a thick stem and 

 shoi't dividing branches on it. Calices shallow, some- 

 times almost flat. Up to 20 septa making columella, pali 

 inconspicuous. Costae thin, spines short on costae, absent 

 on peritheca. PL 16, fig. 7; PL 17, fig. 3. 



Specimen (15 x 12 cm.) resembles Klunzinger's fig. of E. 

 concamerata. PL 17, fig. 2. 



SECOND SERIES— ZOOLOGY, VOL. XVIL 



