Mr. R. Shelford's Studies of the Blattidse. 251 



4, P. montana, n. sp. 



(^ . Piceous. Head piceous, a triangular ochreous spot below the 

 eyes, basal joints of nriaxillary palpi rufous, antenna; slightly in- 

 crassated, black. Pronotum trapezoidal, not covering the vertex, 

 sides deflexed, posterior margin rounded, slightly produced. 

 Tegmina piceous, apex of mediastinal field testaceous, sixteen to 

 seventeen costal veins, discoidal field with six longitudinal sectors. 

 Wings infuscated, ulnar vein tri-ramose. Abdomen, coxse and femora 

 rufous ; cerci, apices of femora, tibiae and tarsi black, tibial spines 

 rufous. Supra-anal lamina produced, trigonal, sub- genital lamina 

 trapezoidal, with one style. 

 Total length 16 mm. ; length of tegmina 12-5 ram. 



Mt. Matang, 3000 feet, Sarawak, Borneo. 



Two examples (Oxford Museum), 



The species in general facies approaches the genus 



Pseudomops. 



5. P. rujicollis, n. sp. (Plate XIV, fig. 6.) 



^ . Head and pronotum bright rufous ; eyes, antennae (mutilated) 

 and maxillary palpi black. Tegmina black, a white spot on each 

 mediastinal area and at the base of each anal field. Wings fuscous. 

 Abdomen black. Coxaj with their distal ends and outer borders 

 testaceous- white ; the remaining joints of the legs are missing. 

 Total length 16 mm. ; length of tegmina 13'2 mm. 



Penang {Cantor). One example. 



The arrangement of the veins of the tegmina is the same 

 as in P. pica, Wlk., and to that species this one is most 

 nearly allied, and I expect that the antennae when perfect 

 specimens are taken will be found to be plumose in the 

 basal half as in P. pica. The insect is remarkably fusiform 

 and both in colour and in shape is very like an Elaterid 

 beetle. 



iii. The genus Hemithyrsocera, Sss., for reasons already 

 given, has been transferred to the sub-fam. Ectobiinse ; the 

 type species is H. histrio, Burm., since with this ZT. Jucunda, 

 Sss., is synonymous (vide antea). 



The determination of the species of the genus Pseudo- 

 mops is attended with some difficulty owing to the brevity 

 of the diagnoses of the older authors and to the great 

 variability of some of the species. I have been at some 



TRANS. ENT. SOC. LONI). 1906. — PART II. (SEPT.) 17 



