STABFISHES OP THE PHILIPPINE SEAS. 397 



are present on most of the papular areas. Each apparatus is about 

 one-fourth or one-fifth the transverse diameter of the plate in length. 

 A few calcareous grains are scattered in the skin of the papular areas 

 and can be seen only when specimen is dry. There are no granules 

 whatever on surface of plates as in L. leachii. 



Papular areas slightly sunken, in 8 regular longitudinal series, 

 each area before drying appearing slightly larger than the adjoining 

 plates; after drying, slightly smaller. Before drying the areas of a 

 series appear to be nearly or quite confluent; after drying they be- 

 come sunken and this appearance is lost. There are 15 to 35 pores to 

 an area. 



Adambulacral spines slender, of uniform width, truncate or round- 

 tipped, subequal, and one-half to one- third longer than the base line 

 of the comb. They are marked by a shallow grove from near the 

 base to near the tip — the groove not reaching either end. This mark- 

 ing is best shown on the proximal half of ray, being often rather 

 faint on the spines of the distal half. Three is the commonest 

 number, but many plates of the type have 4. The furrow spines are 

 united by a continuous membrane, their tips forming a scalloped edge 

 to the furrow margin. The actinal spine is heavy, subcylindrical. and 

 a little longer than the furrow spines, having often a slightly swollen 

 and flattened tip. On the outer part of the ray the spine usually 

 skips 2 plates, but at the base frequently occurs on every other plate. 

 One specimen has 4 rays, the rest 5. 



Type.— C^t. No. 32640, U.S.N.M. 



Type-locality. — Station 5165, off Observation Island, Tawi Tawi 

 Group, Sulu Archipelago, 9 fathoms, coral: 4 specimens. 



Distrihution. — Known only from the type-locality. 



Remarks. — ^This form agrees with Leiastev coriaceus Peters in 

 having grooved furrow spines. It differs from coriaceus in having 

 abundant pedicellariae, longer, slenderer rays, less flattened dorsally, 

 in having the abactinal papulae in perfectly circumscribed areas (not 

 scattered indefinitely everywhere), and in having the furrow spines 

 untapered and truncate. The skeleton appears to be more regular than 

 in adults of coriaceus. L. analogus differs of L. leachii in having 

 perfectlj'^ smooth plates, not finely granulated ones, in having more 

 numerous and grooved adambulacral furrow spines, and in having 

 abundant pedicellariae. L. speciosus is described as differing from 

 L. leachii only in possessing pedicellariae. On account of the pres- 

 ence of pedicellariae I was at first inclined to regard analogus as a 

 race of speciosus.^ but if speciosus is really so close to leachii the rela- 

 tionship of analogus can not be in that direction, for it lacks the fine 

 granules figured and described by de Loriol as characterizing the 

 plates of leachii; moreover both leachii and speciosus have only 2 

 ungrooved furrow spines, while coriaceus and analogus have 3 (or 4) 



