MONOGRAPH OF THE EXISTING CRIXOIDS. 



157 



Fio. 95. 

 Fia. 95. LATERAL VIEW OF A SPECIMEN or THALASSOMETRA VTLLOSA FROM THE WESTERN Air.rTt.tN ISLAXPS. SHOWING TOE 



RELATIVE PROPORTIONS OF TUE AKMS, PINNULES, CENTRODORSAL AXD C1RHI. 



