311 



Length 12^ mm. 



Only two species of Archilithobius have been previously recorded 

 from the Oriental Region. The first was from the Nicobar Islands and was 

 named grossidens by Meinert. It differs from the species just charac- 

 terised in having more than 28 antennal segments, and many more 

 ocelli composing each row. The second, named birmanicus by myself, 

 is very nearly related to the one now described; but there are 5 or 6 

 teeth on each side of the maxillary coxal plate. 



4. Lithobius {Archilithobius) javanicus sp. n. PL XIX , fig. 3. 



Java: Tjibodas. A single male, probably immature, specimen. 



Colour pale purple ; head plate , apex of antenna? and tarsal segments 

 of legs testaceous. 



Head-plate sub-circular, evenly convex above. 



Ântennœ short, hirsute, composed of 20 segments of which the 

 apical is as long as the three that precede it. 



Eyes composed of about 6 ocelli, of which the superior median 

 is much the largest, arranged in two rows of ocelli, whereof three 

 are large and three very small. 



Maxillary coxœ furnished on each side with four sharp teeth 

 whereof the external is very small. 



Tergites much resembling in form those of the preceding species ; 

 but considerably more strongly wrinkled and not noticeably spinulose, 

 with the angles squared and the posterior borders straight. 



Sternites obscurely sulcate. 



Coxal pores small, round; 2, 2, 2, 2. 



Anal legs armed beneath as follows: 0, 2, 1,0; claw with an 

 accessory, superior smaller claw. 



Length 7 mm. 



Evidently allied to the preceding species but differing in a number 

 of characters sufficient to justify the conclusion of its distinctness. 

 Thus it is much smaller ; there is a greater number of coxal teeth , 

 the antennas are hairy and the ocelli vary more in size. Moreover 

 the angles of the terga are more squared and the posterior borders 

 straighten In the last character it also differs from birmanicus. 



