Fig. 1. 
DIPLOPODA. 
PLATE IX. 
Sphariodesmus angustus, sp. n., keels of fourth, fifth, and sixth tergal plates: 1a, lateral 
view of posterior extremity ; 15, posterior view of the same; 1c, inferior view of last 
three segments; 1d, phallopods viewed in situ from below; 1e, socket of phallopods; 
1 f, lateral view of phallopods; 1g, first leg of male. 
Spheriodesmus stilifer, sp. n., keels of fourth, fifth, and sixth tergal plates: 2a, lateral 
view of posterior extremity ; 2, phallopods viewed in situ from below; 2, lateral view 
of phallopods. 
Spheriodesmus digitatus, sp. n., keels of fourth, fifth, and sixth tergal plates: 3 a, inferior 
view of eleventh segment, showing the sinuous shape of the posterior border charac- 
teristic of Spheriodesmus ; 3b, phallopods viewed in situ from below; 3 ¢, lateral view of 
extremity of phallopod ; 34d, first leg of male. 
Spheriodesmus coriaceus, sp. n., phallopods viewed in situ from below: 4a, internal aspect 
of phallopod; 448, first leg of male (represented too short and thick). 
. Cylionus constrictus, sp.u., lateral view of anterior extremity : 5 a, lateral view of posterior 
extremity; 506, inferior view of eleventh segment, to show the straightness of the 
posterior border (to compare with 3a); 5c, phallopods viewed in situ from below; 
5d, inferior aspect of phatlopods seen more obliquely; 5¢e, lateral view of external 
aspect of phallopod; 5/f, first leg of male. 
