STOMATOrORA MAJOR. 427 



The ramificatiou, which is often luxuriant^ and usually 

 straggling and irregular, is simply dichotomous in plan ; 

 occasionally the branches meet and unite, and form a 

 kind of network. 



Johnston seems to have based his description of 

 S. granulata on specimens of Milne-Edwards's species, 

 and o£ the form which Heller has characterized as 

 Criserpia Johnstoni. His figure must be referred to the 

 latter. 



Stomatopora major, Johnston. 



Plate LVIII. and Plate LXI. fig. 1. 



Alecto major, Johnston, B. Z. ed. 2, 281, pi. xlix. figs. 3, 4 : Busk, B.M. 



Cat. iii. 24, pi. xrii. figs. 3 (very cliaracteristic) to 5, ?pl. 



hi. fig. 3 : La7idsb. Pop. Hist. 279, pi. xvi. fig. 60. 

 ? TuBULiPORA TRAHENS, Couch, Corn. Faun. iii. 105, pi. xix. fig. 5. 

 ?TuBULiPORA REPENS, 8. V. Wood, Ann.N. H. xiii. 14: 2?msX' (Alecto), Crag 



Pol. 112, pi. XX. fig. 8 (not fig. 5). 



Zoarium usually much branched dichotomously, walls 

 minutely speckled or dense and smooth ; branches rather 

 straggling, stout, often radiating from a central point, 

 widening gradually towards the top. Zooecia disposed 

 in 2-4 series, immersed, the oral extremity more or less 

 erect and free, orifice circular; the free extremities 

 sometimes arranged in very regular transverse rows, 

 sometimes less regularly disposed. Ocecia developed at 

 the end of the branches or immediately below the ter- 

 minal bifurcation, somewhat elongate, broad above and 

 narrowed downward. 



In the present form the branching is often luxuriant, and 

 the most beautiful radiating growths are developed in the 

 sheltered hollows of deserted shells (Plate LVIII. fig. 4) ; 

 but, as is universally the case in this tribe, much diversity 



