390 EXPLANATION OF THE PLATES. 



Fig. 



3. Cement gland, duct, and ovarian tubes of Concho- 



derma aurita; {act), ovarian tubes, with ova in 

 process of formation; (#), cement-gland; (c), 

 cement- duct. 



4 . Conchoderma virgata, enlarged, with one side of the ca- 



pitulum and of the peduncle 

 removed, to show the form 

 and position of the body. 

 (a.) tergum, edge of. 

 (b.) mouth, with one of the palpi 



seen on the inner, upper 



corner. 

 (c.) adductor scutorum muscle. 

 (d.) orifice of acoustic (?) sack. 

 (e. ) scutum, occludent margin of. 

 (/.) branching ovarian tubes 



within the peduncle. 

 ((/.) filamentary appendage on 



the prosoma. 

 (It), ditto, close to basal articu- 

 lation of the first cirrus. 

 (i.) ditto, on the pedicel of the 



first cirrus. 

 (j.) ditto, on the pedicel of the 



third cirrus. 

 (k.) ditto, on the pedicel of the 



fourth cirrus. 

 (/.) ditto, on the pedicel of the 



fifth cirrus. 

 (m.) edge of the carina. 

 (n.) prosoma. 



5. Apex of one of the filamentary appendages of Con- 



choderma aurita, greatly magnified, exhibiting the 

 included branching testes. 



6. Acoustic (?) sack of Conchoderma virgata, taken out 



of the acoustic meatus, with the diaphragm from 

 the summit removed ; greatly magnified. 



