Vol. 56.] FOSSIL CORALS AND ECHLXIDS OF SOMALILAND. 37 



Distribution. — Uradu Limestone: near the Rugga Pass. 

 Coll. Mrs. Lort Phillips. 



Affinities. — This species is founded on a single coral from the 

 Uradu Limestone, which is unfortunately so much weathered that 

 its form is somewhat uncertain. The specimen measures 100 mm. 

 in length, 80 mm. in breadth, and 33 mm. in height. There is no 

 epitheca left on the base, but its absence may be due to erosion. 



The coral is a close ally of the Turonian C. crassisejpta, de Prom. 1 

 from which it differs by its shorter columellar fossa, also by having 

 the thick septa equally developed in all directions, and not especially 

 on the sides of the corallite. The new species agrees far more 

 with the Turonian than with the Neocomian, Hhodanian, and 

 Aptian speeies. 



The four Indian Turonian species of Cyclolites are much smaller, 

 and belong to a more primitive type of the genus. 2 



Genus Lithae^a, Milne-Edwards & Haime, 1849. 



1. Lithaejea Col^e, sp. nov. (PI. II, figs. 12 a & 12 b.) 



Diagnosis. — Corallum small, lamellar; probably growing in 

 thin fiat encrustations. Corallites small and crowded, and separated 

 by thick walls. 



Calices very deep. Columella small, and barely recognizable on 

 the surface, 



Septa in two cycles ; irregular in thickness, and rather sinuous. 



Dimensions. — Diameter of calices =1*5 mm., and distance 

 of calicinal centres =2 mm. ; corallum : thickness =10 mm., and 

 diameter =28 mm. 



Distribution. — Uradu Limestone: Uradu. Coll. Mrs. Lort 

 Phillips. 



Affinities. — This species is characterized by its small coral- 

 lites, deep large calices, and thick walls or bands of coenenchyma. 

 The genus has hitherto been recorded no earlier than the Upper 

 Cretaceous. The species of Litharcea which this coral most re- 

 sembles is probably L. Deshayesiana (Mich.) 3 which agrees with it in 

 the dimensions of the corallites and number of septa, but has thinner 

 coenenchymal bands. The new species differs from L. epithecata, 

 Dune. 4 from the Upper Cretaceous of Sind, by the smaller size of 

 the coraliites, the fewer septa, and the narrower wall. 



2. Lithae^a Pabkinsoni, sp. nov. ' (PL II, figs. 13 & 14.) 



Diagnosis. — Corallum growing in cylindrical branches measur- 

 ing from 10 to 20 mm. in diameter. The corallites are of medium 



1 E. de Fromentel, £ Pal. franc. Terr. Cret. : Zooph.' vol. viii (1864) pi. lvi & 

 ibid. (1867) p. 334. 



2 Sr.oliczka, ' Cret. Fauna S. Ind.' Pal. Ind. vol. iv, pt. iv (1873) pp. 48 & 49. 



3 M ichelin, ' Iconogr. Zooph.' (1840-47) p. 164 & pi. xlv, fig. 4. 



4 P. M. Duncan, ' Sind Foss. Cor. & Aloyon.' Pal. Ind. ser; 14, vol. i, pt. ii 

 1880) p. 23 & pi. ii, figs. 1-9. 



