DIPLOPODA OF LIGURIA 515 



closely and finely striate behind, the area in front of the pore 

 irregularly striolate behind, smooth in front; sulcus strong, 

 sinuate by the pore; pores situated a little distance behind the 

 sulci, the area just in front of the pore smooth. 



Anal somite small, the caudal process long, acute, upcurled 

 and hairy; valves with raised margins, hairy, punctulate. 



Legs short. 



(Z. Much thinner than 9 . Antennae niucli longer, reaching 

 to the end of the first somite. First legs hook-like. 



Legs with the 5^^' segment padded. 



Copulato?'}/ feet: anterior lamina narrowed below and lightly 

 bent inwards, the two pieces, however, separated below by a 

 wide space; the posterior portions not visible from the front, 

 compact but complicated (vide fig. 4, 4a). 



N° of somites 52-54. 



9, length 47 mm., width 6; /', length 37 mm., width 5. 



Locality : Monaco. 



This species is undoubtedly closely related to /. mediterraneus; 

 the form of the copulatory feet , however , is very different in 

 the two. Moreover the caudal process is longer in /. thoinasii 

 and the legs are a bright yellow, instead of fuscous. 



25. lulus aleator, sp. u. 



{Fig. 5) 



c/'. Very closely allied to the preceding. 



Colour black , lower portion of face ferruginous , antennae 

 fuscous, legs ochraceous or flavous and distally infuscate. 



Head, eyes, antennae, first tergite, etc. as in the preceding. 



The transverse sulcus of the somites very deep and lightly 

 sinuate near the pore, the area in front of it longitudinally 

 striate at the sides, transversely striolate above ; the area behind 

 it more deeply and much less closely sulcate than in /. thomasii. 



Tlie pore just behind the sulcus, being separated from it by 

 a space that is only about equal to the diameter of the pore. 

 Anal tergite as in /. thomasii, but the caudal process shorter. 



