NO. 1401. HENERA OF SIMPLE FUNG ID CORALS— VAUGHAN. 377 



Gregoiy in his Jurassic corals of the Cutch." One reason for this 

 advance of Gregory was, he carefull}- determined the type-species of 

 eacli ^enus and was thus a])le to give rclial)le g'eneric diagnoses. He 

 proposed the following classification to cover the genera represented 

 by the Cutch Jurassic corals. 



"Order FUNGIDA. 



"Madreporaria in which the walls and septa are perforate or imper- 

 forate. The septa consist of lamelhB or of palissades of trabicula?. 

 The septa are united by abundant synapticuke. Dissepiments unim- 

 portant or absent. 



" Family THAMNASTRAEID^E, Koby, em. 



"Simple or compound Fungida, with lamellar septa, which are solid 

 or perforated only along the upper or inner margins, owing to the 

 fusion of trabicular projections from the septa. Synapticula? and 

 dissepiments both present. 



"Subfamily i: THAMNASTRAEINiE. 



"In compound coralla the septa of adjoining corallites are confluent. 

 The corallites are not separated by collines or synapticular walls. 



"(ienera: Thamnantraea, Le Sauvage (not Pratz). 



"Genera: Dimorphastraea, d'Orbigny. 



"Genera: Centrastraea, d'Orbigny. 



"Genera: Stihastraea, Etallon. 



"Genera: Latomaeandra, Edwards and Haime. 



"Subfamily 2: COMOSERIN^. 



"The corallites are surrounded by compact S3niapticular walls. The 

 corallites may be free laterally at their distal ends or united into long 

 series, externally bounded b}' collines. 



"Genera: Archaeoseris, Gregory. 

 "Genera: Comoseris, d'Orbigny'. 



' ' Family ETHMOTID^, Gregory. 



"Simple or colonial Fungida, in which the septa are lamellar; they 

 are cribriform but not tra))icular. 



"Genera: Protelhmos, Gregory. 

 "Genera: Metethmos, Gregory. 

 "Genera: Frechia, Gregory. 

 "Genera: Sematethmos, Gregory'. 

 "Genera: Kohya, Gregory. 



ff Pabeontologia Indica, Ser. IX, Jurassic Fauna of Cutch, II, 1900, Part L>— The 

 Corals, pp. 29, 30. 



