290 The Philippine Journal of Science wu 



tubes in the stem. The surface is covered with fine pores or 

 krinkled integument. Skeleton consists of gnarled, branching, 

 warty protuberances possessing little lithistid bodies. (Zittel.) 



Chenendopora ( ?) major sp. nov. Plate XVII, fig. 2. 



Michelin, Iconographie Zoophytologique, 324, PI. 77, fig. 13a. 



I am unable, owing to the state of the petrifaction of this 

 specimen, to say definitely in what genus it should be placed. It 

 is unlike any thing in either the British Museum or the Leiden 

 collections. It may be a Cellepora as it is superficially not unlike 

 illustrations of Cellepora cucullina Mich. The surface under a 

 hand lens is seen to be perforated by innumerable minute pores. 

 The figure is reduced to one-fourth actual size. 



Locality: Liguan, Batan Island, southeastern Luzon, No. 1. 



Formation: Miocene limestone. 



MADREPORID.E ■ ♦ 

 MADREPORA Linnseus 



Stock branching, bundle shaped, or lobulated, consisting of 

 small cells lying in a spongy net-like coenenchym ; calix prominent 

 (especially in the young) with thick edge; septa not projecting; 

 visceral cavity divided into halves by 2 septa, opposite and touch- 

 ing one another on the inner edges ; columella lacking. Tertiary 

 and Recent. (Zittel.) 



This is the principal reef -building coral of the present time, 

 but is not common in the Tertiary except in the tropics. 



Madrepora duncani Reuss. (?) Plate XVIII, fig. 6. 

 Tertiarscht. auf Java (1880), Plate XXV, fig. 11. 



The polyp cavities are larger in this specimen than in Martin's 

 Javan form and are slightly farther apart. These differences do 

 not seem to be of specific value, and the state of the specimens 

 does not justify any discrimination. 



Locality: Barrio Mesaba, near Danao, Cebu, No. 272. 



Formation : Miocene limestone. 



ASTREACE^E 

 PRIONASTRAEA Edwards et Haime 



Stock convex or uneven, walls commonly with thin epitheca; 

 bud submarginal, besides calycinal union; cells closely crowded, 

 prismatic, walls united interiorly above, separated below; calyx 

 polygonal, deep,, with simple borders; columella spongy; septa 

 thin, close, granulated, and serrate, the largest teeth in the 

 neighborhood of the centrum. Tertiary and Recent. (Zittel.) 



