C(ELOPLEURUS MACULATUS. 87 



bright red. In C. floridamis the primaries are uniformly red. In C. hngi- 

 coUis the primaries are whitish, with a long colhir marked with granular 

 lines (PI. 53, figs. 10, 11). In C. elegans, the primaries are bright yellow, 

 with the spots red. 



Doderlein (1906) has given quite a full account of the pedicellarioe and 

 calcareous particles of this species, with some figures ("Valdivia" Echini, 

 PI. 45, fig. 1), under the name of C. Maillardi. Aside from his statement that 

 the specimen was from Japan, his figure of an ophicephalous pedicellaria shows 

 clearly that he had maculatiis and not Maillardi in hand. It has seemed to us 

 that additional figures were desirable for the sake of comparison with the 

 other species of the genus. 



The tridentate pedicellariaB are common, and show considerable diversity 

 of form and size. The valves (PI. 49, figs. 2S, 2^) are slender and rounded 

 at the end ; their length ranges from .30 to 1.85 mm. They are some- 

 times tinged with green at the tip, while reddish at the base, but are 

 often colorless. The stalks are 1.5-5 times as long as the valves, and 

 their upper ends (PI. 49, fig. 25) are enlarged and rounded without any 

 constriction. 



The ophicephalous ])edicellari9B are abundant, especially actinally. The 

 valves (PI, 49, fig. 21) are much stouter than m jioridanus, but are not quite 

 so stout as those of longicoUis. They are easily distinguished from the latter, 

 moreover, by their evident constriction near the middle. They (i. e., the 

 lime) are usually quite deeply colored, red near the base and green at the tip. 

 The upper ends of the stalks are also colored red. The valves are .60-.70 mm. 

 in length, while the stalks are 3-6 times as long. 



The triphyllous pedicellarioe appear to be wanting, unless we call the 

 smallest of the tridentate by that name. 



The calcareous particles in the pedicels are irregular, rough, more or less 

 curved rods (PI. 49, fig. 27), in addition to the usual terminal rosettes and 

 supporting plates. The calcareous particles of the gills (PI. 49, fig. 2S) 

 are smooth perforated plates of small size and irregular form. 



The sphceridia are numerous (6-12) in each ambulacrum on the actinal 

 surface. They are decidedly v/ider than long, and are deeply sunken in 

 pits in the test (PI. 49, fig. 26). 



This species was taken by the " Albatross " at the following stations : 



Station 4881. Eastern Channel, Korea Strait. Bott. temp. 64.9°- 

 40-59 fathoms. Fne. gy. s. br. sh. 



