538 BULLETllSr 100, UNITED STATES NATIONAL MUSEUM. 



is no sj^zj^g}' between the first and second adambulacral plates; no 

 syzygial joint between the upper end of the second and third ambu- 

 lacral ossicles, although the interval is very narrow; there are no 

 superomarginals directly above the first adambulacrals. The first 

 and second, and in one interbrachium also the third, adambulacral 

 plates are joined to the corresponding adjacent plates of the next ray, 

 although not so closely as in the other generic group, there being 

 considerable tissue between the apposed plates. It was this feature, 

 figured by Perrier, which led me to suppose that F. spinosa belonged 

 with the group containing F. fecu7ida, F. spatuUfera, and others, in 

 which the first adambulacrals are always tightly joined. For the 

 present it is best to consider this character as of secondary impor- 

 tance in true Freyella, which is really not very closely related to the 

 genus containing F. fecunda. The latter is distinguished by a syzygy, 

 well-developed marginals for the interbrachium, and serial gonads. 



The species which I have personally examined are Freyellaster 

 fecundus Fisher (California), Freyellaster spatulifer (Fisher), and 

 Freyellaster scalar is (A.H.Clark) (Galapagos Islands). Among the 

 species described by Sladen in the Challenger report, Freyella poly- 

 cnema appears to belong here. 



I have examined the following species which belong to the genus 

 Freyella: spinosa Perrier, elegans Verrill, insignis Ludwig, pro- 

 pinqua Ludwig, pacifica Ludwig, and rrdcroplax Fisher. Without 

 knowing the disposition of the gonads it is not possible to be certain 

 that the following species belong in Freyella. As nearly as can be 

 judged by the fig-ures given they appear to. Such species are: sexra- 

 diata Perrier, henthophila Sladen, fragilissima Sladen, heroina Sla- 

 den, dimorpha Sladen, remex Sladen, tuberculata Sladen. F. hrac- 

 teata Sladen is a synonym of elegans, according to Professor Verrill. 



FREYELLASTER SPATULIFER Fisher. 



Plate 144, fig. 1 ; plate 154, fig. 3 ; plate 155, figs. 1, lor-h. 



Freyella spatulifera Fishee, 1916?), p. 34. 

 Freyellaster spatulifer Fisher, 1918, p. 104. 



Diagnosis. — Rays 14. Genital region of ray short, slightly swollen, 

 the spinelets concentrated in transverse parallel bands, about 30 in 

 number, as a rule 1 opposite each lateral spine and 1 in the interval 

 between; lateral spines opposite every adambulacral beyond the 

 eighth, long and slender. Adambulacral armatm^e: one furrow 

 spinelet at each end of plate, and a second longer one above the aboral 

 spinelet ; 1 large suboral spine, which on the first 10 plates is conspic- 

 uously broadened and spatulate at tip. Mouth spines, 2 at distal 

 furrow corner of plate and 3 on actinosomial margin, 1 heavy sub- 

 lanceolate suboral spine, frequently terminating in 2 points. R= 



