Plate 7 I 



All figures Lysastrosoma desmiora Clark 



Fig. 1. Marginal skeleton and 3 adjacenl abactinal plates (A) ; S S S, ninth, eleventh and thirtet 



spiniferous superomarginal plates; s s, alternate unarmed superomarginals; secondary 

 superomarginals shown between; I, inferomarginals; AD, adambulacral plates; base 

 of ray to left; K). 



la. Marginal skeleton and two adjacenl abactinal plates (from near end of raj I, letteni 

 i,, i; note the single intermediate inferomarginal ossicles i between anj 2 | 

 instead of 2 as in 1: base of ray to left, X10. 



2. Abactinal spinelet, ;<25. 



:i. Mouth plates and firsl 3 adambulacral plates of either raj . the firs) plate much specialized, 



X10. 



4. Inner surface of ninth and tenth superomarginal plat.-, tenth to the left, 1 -' 



5. Abactinal straight pedicellaria, 0.22 mm., ■ LOO. 



5a. Interbrachial straight pedicellaria, 0.54 mm., ■ 100. ,.,. 



