Vol. XXV] ENTOMOLOGICAL NEWS. 387 



sulci, these being evident only across the anterior borders in the anterior 

 region of body, but in the middle and caudal regions extending to the 

 middle of plates. None of the sternites with any distinct pits or de- 

 pressions. 



Last ventral plate strongly narrowed caudad; sides convex; caudal 

 margin deeply subangularly excurved. Smooth, without furrows. 



First seven pairs of legs with 2 tarsal spines ; the eighth to twentieth 

 inclusive with one. 



Coxopleural process moderately long, ending in 2 stout points ; bear- 

 ing in addition either I or 2 dorsal spines and 3 lateral. (See Fig. 3.) 



Prefemur of anal legs with 4 spines in the ectal ventral series and 

 3 in mesoventral series, 5 more occur in a series at or a little ventrad 

 of the middle of the ventral surface, and dorsomesally are 2 in addition 

 to the spine at the distal corner. Other joints unarmed. 



Length, 43 mm. 



Locality. Dutch New Guinea : Sorong. 



Two specimens. 



This species seems to be closest to 0. spinosus Porat of Java 

 and Borneo. Among the various differences,, it is readily to be 

 distinguished from that species through the absence of the 

 characteristic spinae on the prefemur of the twentieth legs. 



5. Otostigmus malayanus sp. nov. (PI. XVII, figs. 4, 5). 



Dorsum brown, tinged with dilute bluish green ; a deeper narrow 

 bluish green band along the middle of caudal margin of each plate. 

 Head and, to a less extent, the first dorsal plate a little paler and less 

 greenish. Antennae pale. Legs somewhat testaceous, tinged with bluish 

 green distad, the green more pronounced in the caudal pairs. 



Head and first dorsal plate subdensely but not coarsely punctate. 

 Otherwise smooth. 



Articles of antennae 21, of which only the first 2 to 2 1-3 are 

 glabrous and shining. 



Prosternal teeth 4 plus 4, the two most mesal on each side largest, 

 a minute denticle at edge of mesal incision on each side, including 

 which the teeth number 5 plus 5. Lines setting off dental plates meet- 

 ing at an obtuse angle. Process of prefemur with two denticles on 

 mesal side below apex. 



Dorsal plates from the fifth on and somewhat obscurely also the 

 third and fourth, with mostly 7 more or less clearly defined longitudinal 

 keels which are not sharp edged. Keels, especially caudad, finely but 

 neither finely nor especially conspicuously scabrous. Plates from the 

 third caudad distinctly and sharply margined, the raised edge thin. 



Last dorsal plate parallel-sided; rather sharply bowed out caudad, 



