STEPHANOCIDARIS. 17 



Only the tridentate and small globiferous pedicellarifB are present in 

 this species, no large globiferous ones occurring in any of the numerous 

 specimens examined. 



The tridentate pedicellaria^ (PI. 5, figs. £?, 5, 6) have the valves very 

 slender and generally about 1.5 mm. long; in some specimens, however, 

 where these pedicellaria^ are very abundant, they vary greatly in size and 

 sometimes the valves are only .oO or .40 mm. in length. Usually the stalks 

 are as long as the valves or a little longer, but often they are shorter. 

 These pedicellarite are generally fairly counnon around the primary spines ; 

 when very abundant they occur on the ambulacra also. 



The small globiferous pedicellarite (PI. 5, figs, i, 3, 4) are not peculiar ; 

 they have rather narrow valves and a well-developed end-tooth. The 

 valves are from .18 to .80 nun. long, and the stalks are from one to three 

 times as long. These pedicellaria3 are usually abundant everywhere, but 

 in specimens with an exceptionally large number of tridentate pedicellaria?, 

 they are much less frequent and occur chiefly among the secondaries of 

 the scrobicular circles. 



Station 3823. Off Lae-oKa Laau Light, S. coast of Molokai. Bott. temp. 

 69°. 78-222 fathoms. Fne. s. p. 



Station 3838. Off Lae-o Ka Laau Light, S. coast of Molokai. Bott. temp. 

 67°. 92-212 fathoms. Fne. gr. br. s. 



Station 3863. Pailolo Channel, between Molokai and Maui. Bott. temp. 

 61°. 127-1-34 fathoms. Brk. co. crs. a:, r. 



Station 4046. Off Kawaihae Light, W. coast of Hawaii. Bott. temp. 

 59°. 71-147 fathoms. Co. s. for. 



Station 4062. Off Kanhola Light, N. E. coast of Hawaii. 83-113 

 fathoms. Co. vol. s. sh. for. 



Station 4096. N. E. approach to Pailolo Channel. Bott. temp. 45.3°. 

 272-286 fathoms. Fne. gy. s. 



Bathymetrical range, 71-286 fathoms. Extremes of temperature, 69 - 

 45.3°. Nineteen specimens. 



Stephanocidaris a. Ag. 



The discovery of a cidarid among the Hawaiian Islands which shows 

 clearly the characters of this genus emphasized by the senior author in 

 1873, is interesting, for specimens of S. hiqiinom seem to be remarkably 



2 



