446 The Philippine Journal of Science i9i» 



70 mm. broad and with stems from 18 to 55 mm. in diameter 

 and from 20 to 60 mm. in length. 



The one colony from the Pabellones Islands (Plate II, fig. 4) 

 is attached to the coralline alga which has overgrown a thick 

 stalk of dead Pontes. The base is somewhat expanded and 

 encrusting, the stem is almost lacking, the indistinct branches 

 or the lobes arising practically from the base. The surface of 

 the polypary is level, symmetrical, and nearly circular. The 

 contrast between such a form with its very short and broad, 

 flat capitulum and general rigidity and forms such as C. philip- 

 pinensis var. arhorea and var. mindorensis gives a good idea of 

 the great range of variation in the form of the colony to be 

 found in this species. 



Capnella parva sp. nov. Plate I, fig. 8 ; Plate III, figs. 3a, 3b, 3c,"^e. 

 The small rigid colony is slender and tree-like, with a wrinkled 

 stem, which is long in proportion to the size of the colony, and a 

 distal portion which gives off the simple or compound polyp-bear- 

 ing lobes or catkins. The distal portion of the stem may divide 

 to form a number of main branches, giving the colony a bushy 

 appearance. The polyps are closely crowded on the lobes, and 

 appear singly or in small groups on the main stem. The lobes 

 are cylindrical with rounded ends, reaching a length in the 

 simple forms of 4 mm. and a diameter of 2.5 mm. and a 

 length of 10 mm. in the compound forms. The colony appears 

 smooth to the naked eye, but with a slight magnification shows 

 a general granular appearance over the entire colony. In con- 

 tracted specimens the knob-like polyps are turned inward and 

 closely appressed to the surface of the catkins. They measure 

 from 0.8 mm. to 1.6 mm. in length and from 0.4 mm. to 1 mm. 

 in diameter. The polyp armament consists of a continuous coat 

 of rather large spinose and knobbed spindles and clubs. The 

 following types and measurements have been noted : 



(a) Clubs: 



(1) Clubs with the spines of one end much enlarged, numerous, and 



sometimes foliated: 0.27 by 0.06; 0.19 by 0.06; 0.3 by 0.08; 

 0.28 by 0.04; 0.22 by 0.03. 



(2) Smaller, smooth, slender clubs: 0.15 by 0.03; 0.14 by 0.04. 

 (6) Spindles: 



(1) Curved spindles with thickened central portions bearing spiny 



or foliaceous processes on their convex surfaces; ends slender 

 and fairly smooth: 0.26 by 0.068; 0.296 by 0.045; 0.266 by 

 0.057. 



(2) Thicker spindles with central enlargement and thicker ends cov- 



ered with spines: 0.27 by 0.08. 



