56 FOKMICID,!:, 



b'. Head oitliev puuctuied or smooth and 

 shining, never .striate. 

 rt*. Basal abdominal segment punctured. 

 a'\ Length 4-() mm. 



a'. Of very slender form ; meso-meta- 

 notal suture above broad and 



distinct L. /ii/yfcricfi, j). (J4. 



h'. More robust ; meso-metanotal su- 

 ture above obsolete L. pitnctivm/ris, p. 64. 



P. Length over 9 mm L. hii/f/Zunni, p. 65. 



b^. Basal abdominal segment nut punc- 

 tured, smooth. 

 a^. Node of pedicel short, br(.)ader than 

 long or about as broad as long. 

 a'. Head smooth, shining, not punc- 

 tured. 

 a'. Seen from above node of pe- 

 dicel considerably more than 

 half the length of 1st abdo- 

 minal segment L. cmilifo, ]). 66. 



Ir . Seen from above node of pe- 

 dicel distinctly very much less 

 than half the length of Lst 



abdominal segment L. hicidula, p. 66. 



5*. Head punctured. 



a^. Mandibles toothed on inner 

 margin, 

 a". Head and thorax opaque, 

 with a blue metallic tint in 



certain lights L. iiwllcri, p. 67. 



b'\ Head and thorax sparsely 

 punctured, shining, not 

 opaque, and with no metal- 

 lic tint L. dalyi, p. 67. 



b^. Mandibles toothed at the apex 

 only. 

 a'^. Meso-metanotal suture above 

 obsolete. 

 a~. Abdomen lighter in colour 



than head and thorax . . L. robcrii, p. 68. 

 b''. Abdomen concolorous with 



head and thm'ax i. coo)iooyensis, p. 68. 



¥. Meso-metanotal suture dis- 

 tinct L. yerbunji, p. 69. 



b'^. Node of the pedicel elongate, with 

 a sloping curve from back to front, 

 vertically truncate posteriorly. 

 «■*. Head, thorax and abdomen with 

 a bluish metallic reflection. 

 «'. Apex of median lobe of clypeus 

 transversely truncate, some- 

 times bidentate L. chineuxis, p. 69. 



i'. Apex of median lobe of clypeus 

 ending in a bhiut obtusely 

 rounded point, not transversely 

 truncate L. minchini, p. 70. 



