290 PROCEEDINGS OF THE ACADEMY OF [May, 



with clove brown, the number of annuU on the caudal limbs being four 

 principal ones on the femur, five on the tibia and two on the tarsus. 



Measurements. 



Length of body, 21.5 mm. 



Length of antenna, circa 118 " 



Length of distal joint of the palpus, 5.2 " 



Length of caudal femur, 27.5 " 



Length of caudal tibia, 29 " 



The type is unique. 

 Diestrammena palpata n. sp. 



Type : c? ; Than-Moi, Tonkin. June-July. (H. Frtihstorfer.) [A. 

 N. S. Phila.] 



Allied to D. unicolor Brunner and D. Jongipes described above, but 

 differing from D. unicolor in the much longer limbs as is the case with 

 D. longipes, from which palpata differs in the very long palpi and the 

 different coloration. 



Size rather large; form somewhat compressed. Head with the occi- 

 put descending to the fastigium which is short and deeply, but very 

 narrowly, divided ; facial fastigium separated from the fastigium of the 

 vertex by a considerable space; eye elongate subreniform; antennae over 

 five times the length of the body, the proximal joint large, subcylin- 

 drical, second joint small and very short, remaining joints moniliform; 

 palpi very slender, elongate, first and second joints short, third and 

 fourth quite long, subequal, fifth very long, over half again as long as 

 the fourth. Pronotum rounded transversely; cephalic margin sub- 

 truncate, caudal margin slightly projecting, roundly obtuse-angulate, 

 no lateral angles present; lateral lobes slightly longer than deep, the 

 ventral margin bluntly obtuse-angulate. Mesonotum distinctly obtuse- 

 angulate caudad; metanotum with the caudal margin very slightly 

 arcuate. Abdomen compressed. Cephalic femora somewhat longer 

 than the head and thorax, slender, very slightly expanded proximad, 

 but otherwise subequal, ventral margins unarmed, cephalic genicular 

 lobe with a very short fixed spine, caudal genicular lobe with a long 

 mobile spine; cephalic tibiae very slightly longer than the femora, 

 unarmed dorsad, ventral margins with four paired spines and one 

 median one on the distal border, principal spurs considerably shorter 

 than the large genicular spine on the cephalic femora; cephalic tarsi 

 considerably more than half the length of the tibiae, compressed, the 

 metatarsus slightly more than half the tarsal length, arolia absent. 

 Median femora distinctly but not greatly shorter than the cephalic 

 femora, similar in structure but with a large mobile spine on the cepha_ 



