STAEFISHES OF THE PHILIPPINE SEAS. 389 



marginal plates have the spine. Many of the abactinal and marginal 

 plates have a large alveolar pedicellaria, sometimes 2, with a figure 

 8 depression into which the jaws closely fit when open. The entire 

 apparatus is two-thirds to three-fourths the length of plate. The 

 jaws are semicircular with 8 to 10 fine teeth and narrow abruptly 

 into a very slender stem. The alveoles have a smooth border ; rarely 

 with 1 or 2 indentations. 



Papular areas conspicuous, in 6 longitudinal series (none actinal). 

 Each area is smaller than the neighboring plates and contains 7 to 10 

 pores scattered among granules of diverse sizes. 



Adambulacral armature variable so far as the actinal spine is con- 

 cerned. Each plate has 2 furrow spines, or in some cases 3 at the 

 base of ray. These are flattened, truncate, and slightly hollowed or 

 faintly grooved on the furrow face. The adoral spine is commonly 

 broader at tip and the aboral narrower at tip than at base ; the lat- 

 ter appears to be slightly smaller. The subambulacral spine is thick, 

 broadly lanceolate to subconical, blunt, and separated from the fur- 

 row spines by 1 or 2 rows of granules. It is very irregular in oc- 

 currence. At the base of the ray there is likely to be 1 to a plate 

 (1 to every 2 furrow spines), but farther along ray any number of 

 plates may be skipped, so that sometimes only a very few are present 

 throughout the whole length of the furrow. Its place is usually 

 taken by a granule slightly larger than the rest. 



One series of actinal intermediate plates extends nearly to end of 

 ray while a second series sometimes nearly reaches the middle. They 

 are very slightly convex with slightly larger granules near the mid- 

 dle than on the edge. A few pedicellariae may be scattered over 

 the actinal surface or they may be entirely absent. 



Madreporic body large, but variable, subcircular with fine radiat- 

 ing branching striae. 



Color in alcohol, light brown marked on the disk, base of rays, and 



by 2 cross bars on the rays, with a brilliant light pinkish purple. The 



specimen from station 5641 lacks purple and is mottled with darker 

 brown. 



Tyfe. — British Museum. 



Type-locality. — Migupou (probably a Philippine locality). 



Distribution. — Philippine Islands (Gulf of Davao, Mindanao), 

 Celebes, and northwestern Australia, to 39 fathoms. 



Specimens examined.- — Six : 



Station 5248, off Lanang Point, Gulf of Davao, Mindanao, 18 

 fathoms, coral; 1 specimen. 



Station 5251, off Linao Point, Gulf of Davao, Mindanao, 20 fath- 

 oms, coral; 1 specimen. 



Station 5252, same locality, 28 fathoms, coral : 1 specimen. 



Station 5253, same Jocality, depth and bottom; 2 specimens. 

 13434— Bull. 100—19 26 



