STAEFISHES OP THE PHILIPPINE SEAS. 383 



theae has 4 adambulacral spines in each of the 2 series, while in mollis 

 there are rarel}'^ 4 in the furrow series, and 3 or 2 in the second series; 

 and the rather negative character that Liitken does not describe the 

 peculiar condition of the distal abactinal plates of mollis. 



Koehler has pointed out the differences separating N. lemonnieri. 

 from N. novae-caledonide and N. mollis. The scalloped abactinal 

 plates of the Albatross specimen will furnish a further distinguish- 

 ing feature. 



NARDOA SQUAMULOSA Koehler. 



Plate 105, fig. 5 ; plate 111, fig. 1. 

 Nardoa squamulosa Koehlee, 1910a, p. 168, pi. 1, fig. 8 ; pi. 15, fig. 7 and 8. 



The larger of the 2 specimens has R=41 mm., r=7 mm., and 

 despite slight differences I think both are referable to Koehler's 

 species. The enlarged adambulacral granules are a trifle less con- 

 spicuous than in the type. The distal marginal plates have a dis- 

 tinct central tubercle surrounded by granules, and the central gran- 

 ules of the distal abactinal plates are enlarged. The characteristic 

 enlarged granules of the papular areas number usually 4 to 8, 

 although distally they may be fewer. The abactinal plates have 

 5 or 6 short, usually overlapping, lobes. 



Type-locality. — Off Cape Negrais, Burma, 40 fathoms. 



Distribution. — Burma; Philippine Islands, 28 to 67 fathoms. 



Specimens examined. — Two : 



Station 5253, Gulf of Davao, Mindanao, 28 fathoms, coral. 



Station 5482, Surigao Strait, east of Leyte, 67 fathoms, broken 

 shells, sand, green mud. 



NARDOA SEMIREGULARIS (Miiller and Troschel). 



Plate 105, fig. 3. 



Scy taster semiregularis Muller and Teoschel, 1842, p. 36. 

 Nardoa semiregularis Sladen, 1889, p. 412. 



The specimen is small and is characterized by the great regularity 

 of the abactinal plates which are arranged in transverse and longi- 

 tudinal series. R=29 mm., r=5 mm., R=6 r; breadth of ray at 

 base, 5 to 6 mm. There are 6 or 7 spinelets in the furrow series, 

 and usually 5 in the second series, while the original description calls 

 for but 4 furrow spines. In the Japanese form (Misaki) there are 

 frequently 5, and sometimes 6 furrow spines. The distal abactinal 

 plates are very regular, not irregular, but as only the carinal series 

 occupies the outer third of ray, separating the superomarginal plates, 

 it is likely that the regularity may be explained by the immaturity 

 of the specimen. This would also account for the presence of but 

 1 to 3 pores to each papular area. Near the end of the ray 1 to 2 

 subambulacral granules to each plate are enlarged, as in N. squamu- 



