684 



ZOOLOGY 



SECT. 



FIG. 594. Aspcrgillum. 



(After Sowerby.) 



FIG. 595. Mytilus e dulls, attached by byssus (By.) 

 to a piece of wood. F, foot; S, exhalant siphon. 

 (From the Cambridge Natural History.) 



OLCt 



If, 



pap 



FIG. 596. Adult specimen of KTucula delphinodonta, represented as seen from the right 

 side. Reconstructed to show internal organs. Fully grown specimens are 4 mm. long. 

 aa. anterior adductor muscle ; bg. byssal gland ; eg. cerebral ganglion ; /. foot ; g. gill ; 

 h. heart ; int. intestine ; lp. labial palp ; ess. oesophagus ; ot. statocyst ; pa. posterior ad- 

 ductor muscle ; pap. palp-appendage ; pg. pedal ganglion ; sio. stomach ; vg. visceral gan- 

 glion. (After Drew.) 



