44 



three cycles : those of the third cycle usually unite with those of the second near the columella, 

 but those of the first cycle usually remain independent. 



Columella deep-seated, always present, but variable in size, spongy and crisp. 



Diameter of calicles about 4 millim. 



From D. profunda Pourt. this species is distinguished by the following characters : 



(1) The corallites all face, or tend to face, one way, leaving one face of the dendroid 

 colony quite bare : 



(2) The budding is frequently dichotomous, with a corallite sunk in the axil between 

 two branches, and after budding, the corallites project very little: 



(3) The vermicular strise of the corallites and coenenchyma, though bold enough, are 

 not so coarse as in D. profunda : 



(4) The mouths of the calicles are larger, owing to the lip being less swollen : 



(5) The septa of the 3 rd cycle are more nearly equal to those of the other two cycles, 

 and they almost always unite with the secondaries : 



(6) The tissue forming the columella is more abundant. 



71. Dendrophyllia (Coenopsammia) pusilla n. sp. Plate V. Fig. 38, 38a. 

 Stat. 95. 5°43'ó N., iiq°4o'E. 522 m. 2 Ex. 



This is another species that at first sight simulates an Amphihelia, having a strong 

 resemblance to A. tennis Moseley. 



Colony made up of corallites which bud laterally near the calicular margin in an alternate- 

 distichous (occasionally dichotomous) arrangement, without coenenchyma. 



The surface of the corallum is frosted with sharp little granules, but there is no striation 

 or vermiculation. 



The corallites are elongate and funnel-shaped, with very deep empty-looking calicles, the 

 mouths of which are a little oblique. 



Septa subequal, in six systems and three cycles, those of the third cycle uniting with 

 those of the second : they are not exsert and are very shallow, projecting but little into the 

 calicular fossa. 



There is no columella. 



Lensjth of a corallite about 6 millim. 



Diameter at base „ 2 „ 



Diameter of calicular orifice 2 „ 



