PLATE XIV. 



Fig. 6. Esperella mammiformis, a specimen attached to a stone ; o, osculum : 



3 



2 



PAGE 



Fig. 1. Esperella murrayi ; o, oscula ; />.«, pore-areas ; natural size, . . G7 



Fig. la. Summit of out of the lobes, showing the o.scula ; natural size. 



Fig. 2. Esperella hiserialis, & specimen with most of the soft tissues still attached 

 to the axis ; a, spicular axis, seen where the soft tissues have been 

 removed ; x 2, . . . . . . .75 



Fig. 3. Esjjerelia hiserialis, a specimen from whicli the soft tissues have been 



removed ; e, embryos within the spicular axis ; x 2, . . . 75 



Fig. 4. Esperella fusca, ; natural .size, ...... 72 



Fig. 5. Esperella mammiformis, a.n unattached specimen, with " pinched-up " 



base ; o, osculum ; x f , . . . . . 64 



X f, . . , . . . . . .63 



