114 PROF. A. D. IMMS ON 



* Tdiomerus pallidus, sp. n. (PI. IX. fig. 61.) 



Segment'iim ahdominale quartum fere climidiam jxirtem trunci 

 occupans. Unguiculus superior duobics parvis deniihus armatus ; 

 unguiculus inferior lanceolatus, inermis. Mucrones lati. Long. 

 3"5-5 mm. 



Head. — Longer than broad, equal to the combined length of 

 the metathorax and first three abdominal segments ; clothed with 

 scales. The eyes eight in number on each side ; the post-antennal 

 organs absent. 



Antennas. — Five-jointed, a little longer than the body. The 

 basal joint small, and concealed (text-fig. 15) ; the terminal joint 

 the largest, variable in length. The relative lengths of the joints 

 are as 1 : 24 : 21 : 17 : 32. 



Trunk. — Clothed with scales; a "collar "of long setfe along the 

 anterior margin of the mesothorax, and a tuft at the extremity of 

 the abdomen. The segments related to one another in length in 

 the proportion of 16 : 6 : 4 : 5 : 4 : 36 : 4 : 1. The fourth abdo- 

 minal segment occupying a little less than half the length of the 

 trunk, equal to the total length of the preceding trunk-segments. 



Text-fig. 15. 



Outline figure of Id iomei^us palUdus, sliowiiig the characteristic shajje of 

 the raesonotum. 



Legs. — The legs sub-equal ; a single tenent hair at the apex of 

 each tibia. The supe?'ior clatvs moderately slender, acuminate ', 

 armed with two minute teeth, inserted one behind the other on 

 the inner margin. The inferior claws lanceolate and acuminate, 

 unarmed. The pseudonychia large. The tihice biarticulate, 

 the proximal and distal portions related to one another in length 

 in the proportion of 15 : 7. 



Ventral Tuhe. — Long and cylindrical. 



LLaimda. — Closely resembling that of Paronella borneri (PI. X. 

 fig. 72) : the corpus carrying a stout median seta between and in 

 front of the rami. The rami each armed with four small teeth. 



Furcida. — Reaching to the ventral tube, clothed ventrally with 

 lanceolate scales. The denies only slightly tapering distally ; the 



