THE STARFISH SOLASTER ENDECA, 55 



EXPLANATION OF PLATES I.-V. 

 Lettering in all the Plates. 



I, II, III, &c. . . The hydrocoele pouches as numbered in the manner explained on p. 21. 



I. 7, 13; II. 22, 23; V. 50-52, 56. In 1. 11, however, the above numerals 

 indicate the paired radial cseca. 



1, 2, and 3, &c. . The aboral arm-rudiments associated with the hydrocoele pouches o£ same 

 numbers. I. 7 ; II. 22, 23. 



A thickened zone of hypoblast in archenteron. III. 25-27 (p. 37). 



aa anterior larval arm, I. 8, 10 ; II. 17-23 ; III. 34 ; IV. 41, 42. 



a.c anterior coelom. III. 25-34. 



om ambulacral plates belonging to the various rays. I. 8 ; II. 19, 20. 



an anus. I. 11. 



arch archenteron. 1. 6. 



ax.c axial coelom. I. 10 ; III. 32-34, IV. 36-44, 46 ; V. 49-52. 



B thickened zone of hypoblast in archenteron. III. 25-27 (p. 37). 



bl blastopore. I. 6 ; II. 15, 16 ; III. 25-30 ; IV. 36 ; V. 49. 



D dorsal side of larva. III. 26. 



d.h dorsal horn of posterior coelom. IV. 39, 40, 44 ; V. 50-55. 



d.s dorsal sac, or madreporic vesicle. IV. 39, 46 ; V. 52-56. 



d.t adambulacral spines forming denticles. I. 14 ; IV. 48. 



ep.c epigastric coelom (right lateral diverticulum of anterior coelom). IV. 44-48. 



/. statolith. I. 10 ; III. 28 ; IV. 41. 



g enteron or gut. IV. 36, 38, 40-47 ; V. 49, 50, 53, 56. 



g.r genital pocket from posterior coelom. V. 56. 



hyd hydroporic canal. IV. 39 ; V. 51, 52, 56. 



hy hydrocoele. I. 10 ; III. 28-34 ; IV, 36-48 ; V. 50-52, 56. 



i.ph.c internal oral circular sinus. IV. 46-48 ; V. 56. 



i.r.d rectal cseca. I. 11 ; IV. 48. 



L left side of larva. III. 27. 



la left larval arm. I. 10 ; II. 17-20, 22, 23 ; V. 50. 



l.g left enteric fold. III. 28-33. 



m madreporic opening. I. 11 ; II. 17, 18 ; V. 53-55. 



mth mouth. I. 13-14 ; V. 56. 



mus special muscular bands. III. 34 (p. 47). 



n nuchal groove or furrow on margin and aboral surface of Starfish disc. 



II. 21-23 ; IV. 44. 



n.r area of heightened epiderm on preoral lobe (larval nervous system). I. 10 ; 



III. 34 ; IV. 41-42. 



o.ph.c diverticula for external oral perihaemal sinus. I. 10; IV. 41, 43, 45-48; 



V. 51, 56. 



p.c posterior coelom. I. 10 ; III. 25-34 ; IV. 36-46 ; V. 49-55. 



pg.c hypogastric coelom. IV. 46-48 ; V. 52-56. 



p.ph.c diverticula for pharyngeal coelom. IV. 44, 47, 48 ; V. 56. 



