310 



Antennœ rather less than half the length of the body, composed of 

 28 segments, whereof the second is very large, and the last about 

 twice as long as the penultimate. Coxœ of maxillipedes produced in 

 front into two distinct sub-quadrate plates , each of which is furnished 

 with two small but conspicuous and sharp teeth; externally to these 

 teeth there is a trace of a third smaller tooth. All the tergites with 

 rounded angles, smooth. Legs beset with bristles but almost without 

 spines, the tibial segment only being furnished in front at the apex 

 with a single small spine. Anal legs very long and slender as com- 

 pared with LT. fulvicornis. 



Claw of genital appendages in Ç simple; two pairs of small spurs. 



Length 7 mm. 



This is the first recorded species of Henicops from the Oriental Region. 



It differs from the common European species H. fulvicornis in the 

 length of its anal legs, the armature and conformation of the plates 

 of the maxillary coxae, in its smaller genital spurs etc. 



Lithobius. 



3. Lithobius (Archilithobius) weberi sp. n. PI. XIX, fig. 2. 

 Sumatra: Manindjau. One male specimen. 



Mount Singalang. One male specimen. 



Colour: one specimen deep purplish blue above, paler beneath; the 

 other pale olivaceo-testaceous , head with rufous tint, antennae and 

 posterior somites with tinge of purple. 



Antennœ short, composed of 20 mostly naked segments; the apical 

 segment longer than the penultimate. 



Eyes composed of 6 large subequal ocelli, arranged in two rows. 



Head-plate very slightly hollowed above in the middle, rounded in 

 front, almost pentagonal in shape, with the posterior border very 

 lightly emarginate. The coxœ of the maxillary feet deeply and angu- 

 larly excised in front and furnished on each side of the excision with 

 three sharp teeth. 



All the tergites with rounded or quadrate angles; the posterior 

 borders of the segments 1, 3, 5, 8, 10 and 12 thickened and lightly 

 emarginate; the 14 th lightly emarginate and the 15 th strongly and 

 angularly excised; the tergites distinctly wrinkled and finely and 

 sparsely spinulose. 



Coxal pores for the most part large and rounded; 2, 3, 4, 3. 



