DESCRIPTIONS OF GENERA AND SPECIES 



533 



INTESHlfE 

 EEQIKS. 



XX 



xix 



XX 



xviii 



xvii 

 ? 



xvii 



XVI or xvii 



? 



XV 



BOESAI; 



VESSEL. 



double 



single 



double 



single 



double 

 single 



9 .. 



double 

 single ? 

 double 



single 



LAST 

 HEAKTS. 



Xll 



xiii 



xn 

 xiii 



xii 

 xiii 

 xii 

 xiii 



9 



SPEEH 

 SACS. 



IX, XI, XXX 



xi, xii 



IX, X, XI 



ix, X, xi 

 xi, xii 



X, xi, xii 

 xi, xii 



X, xi, xii 



ix (? x), xi 



xi 



ix, X, xi, xii 



X, xi, xii 



XX, XII 



ix, xi 

 xi, xii 



IX, XI 



PENIAL SETAE. 



not ornamented 



absent 

 present 



not ornamented 



absent 

 ? 



ornamented 

 not ornamented 



absent 

 not ornamented 



ornamented 



not ornamented 

 ornamented 



not ornamented 

 ornamented 



present 

 ornamented 



not ornamented 

 ornamented 



not ornamented 

 ornamented 



OTHEK STKUOTXIEES. 



peptonephridium ; gonads on posterior 

 walls of segments ; sperm-ducts im- 

 bedded in body-wan 



peptonephridium; anal nephridia on 

 posterior wall of xiii ; gonads 



a s 



iingle pair only of gonads in x ; 

 dorsal pores 



: no 



copulatory setae in neighbourhood of 



spermathecae 



a single pair of testes in x 



testes in x only 

 copulatory setae and glands 



sperm-duct imbedded in body-wall ; three 

 pairs of spermathecae 

 testes in x only 

 no dorsal pores ; only a single pair of 

 testes and vasa-deferentia (in x) ; pepto- 

 nephridium present (?) 



genital papillae in ix, x, xi 

 genital papillae on x ; no dorsal pores 



testes in x only 



genital papillae on x; no dorsal pores 



genital papillae on xviii, xx ; no dorsal poi-es 



only one pair of spermathecae and spermi- 

 ducal glands 



