310 s. goto; 



Next to the maginal scries of paxillœ there are two more 

 series of them similar in form to those of the first and but very 

 shghtly smaller. Except in the interbrachial angle, the paxillae 

 of these two series are however usually destitute of the 

 valvate pedicellaria?, and where they are present they are much 

 smaller than those of the first series. In the interbrachial angles, 

 however, many of the paxilla? of the second row and some of 

 those of the third row bear pedicellaria3 exactly similar to those 

 of the first, or superomarginal, series. The three rows of paxilla3 

 above mentioned form the lateral borders of the arms in the 

 proximal half and are either colourless or more lightly coloured 

 than the rest of the paxillae of the abactinal side. 



The paxilla3 of the abactinal side are rather small and close- 

 ly set, so that on this side the animal appears more smooth, 

 compared with L. qidnana and L. maculata. On one of the 

 larger paxillae on the disk or near the base of the arms there 

 may be eight or nine central granules and fifteen or more very 

 fine peripherals. The central granules present rather flattened 

 tops, and in many paxillœ one of them is larger and occupies 

 the very centre of the upper surface of the tabulum ; this central 

 granule is, however, sometimes wanting or very imperfectly 

 developed, and in such cases there is an emj^ty space at the 

 centre of the paxilloo, as seen from the abactinal side. 



Madreporite and Terminal i^late. — The terminal plate is rather 

 broad and bilobed ; it is usually colourless and covered with granules. 

 The madreporite is completely hidden from view by the surround- 

 ing paxillae and one or two paxillae which it bears on its surface 

 (PI. VI, fig. 94). It is rather small, somewhat triangular in 

 shape, and is situated on the margin of the disk, close to the 



