286 DISCOVERY REPORTS 



Fig. D 



1. Notioceramtis anomaltis, x lo. Plan of abactinal plates of proximal radial region: C-C, radial line; papulae 

 shown as large spots, la. Adambulacral furrow spines, 1-7 mm. long, x 25. ih,ic. First and second sub- 

 ambulacral spines, x 25 ; i 6 is 1-5 by 0-85 mm. ; i c is 0-85 by 0-5 mm. i d. Three abactinal granules, 0-29, 

 0-32 and 0-51 mm. high, i <?. Second and third (lower) adambulacral plates, and an actinal plate {AC) 

 carrying a 3-valved pedicellaria, x 15. The subambulacral spines of second plate are much foreshortened. 



2. Cladaster analogus, 2 actinal pedicellariae ; left open, i mm. wide, 0-9 mm. high, x 20 ; right, closed, x 40. 



3. Kampylaster incurvatus, abactinal spinelet o-i8mm. high, x 200. 3 a. Another spinelet, 0-23 mm., 

 X 100. 36. Abactinal spinelet of young specimen, o- 1 mm. high, x 200. 31:. Spinelet from third marginal 



plate, 0-39 mm., x 200. T,d. Actinal spinelet, 0-54 mm., x 100. 



4. MirastreUa biradialis, side view of ray, x 12, to show plates: AD^, AD", adradials; /, primary inter- 

 radials ; IN, inferomarginals ; R, primary radial, r^, r^, the 2 series of radials ; S, superomarginals ; T, terminal. 

 4a. Abactinal "granule" or spinelet, 0-15 mm. long, x 200. 46. Inferomarginal spinelet, 0-27 mm. long, 



X 100. 4c. Abactinal spinelet to same scale, x 100. ^d. First and second inferomarginals and adjacent 

 adambulacral plates, X30; a-a, 2 groups of 3 actinal spinelets. 4^. Map of abactinal plates, x 15, the 

 marginals omitted on lower side ; C, central plate ; x, adcentral end of interradial groove ; superomarginals 

 dotted. 



