STUDIES IN THE FOSSORIAL WASPS. 721 



violaceous from the basal nervure of the fore wing to the apex 

 and at the apex of the hind wing. 



Length 13 mm. 



Hah. Kumaon, N.W. India. 



Although this resembles Myzine rather than Elis in the form 

 of the first abdominal segment and the antennse, I coiisider that 

 it will probably be found to be the male of E. tricolor Sm. The 

 proportions of the cubital cells, the colour of the abdomen and 

 antennaa, and the colour of the wings are all very similar in the 

 two forms and unlike any other species, either of Myzine or Elis. 

 I consider it probable that the group of Elis containing duhia, 

 fedtschenhoiu, and apimacida will also be found to have males 

 showing the facies of Myzine rather than of Elis. These cases 

 render it very difficult to reach absolute certainty in distinguishing 

 the males of Elis from Myzine, though all males with a long 

 petiole may be assigned to Ells. 



I think MetJioca rugosa Cam. (Mem. Manchester Soc. 1896) 

 from Ceylon wdll prove to be a local form of this species, and also 

 an individual aberration as far as the loss of one of the transverse 

 cubital nervures is concerned. It is certainly not a Metlioca. 



Elis (Mesa) nursei Turn. 



Plesia nursei Turn. Ann. & Mag. Nat. Hist. (8) iii. p. 480 

 (1909), S. 



The first abdominal segment is no longer than the hind femur 

 and trochanter combined, the narrowed petiole being rather less 

 than half as long as the strongly dilated apical portion of the 

 segment. In general appearance there is a strong resemblance 

 to petiolcda, but there is no yellow band on the pronotum and 

 sixth abdominal segment. It is also a larger species, and the 

 shorter petiole is a good distinguishing character, in which the 

 resemblance is nearer to inandalensis than to petiolaia. 



Hah. Simla. 



Elis (Mesa) Extensa Turn. 



Plesia {Mesa) extensa Turn. Ann. & Mag. Hat. Hist. (8) i. 

 p. 511 (1908), c?. 



The first abdominal segment is much longer than the hind 

 femur and trochanter combined ; the antennas are longer than the 

 head, thorax, and median segment combined. The wings are 

 strongly sufi"used with yellowish brown, and the yellow bands on 

 the abdomen are reduced to short transverse lines on each side of 

 dorsal segments 2-5. 



Length 12 mm. 



Hah. Upper Burma. 



Elis (Mesa) l^ta Bingh. 



Myzine Iceta Bingh. Faun. Brit. India, Hymen, i. p. 70 

 (1897), S. 



S . Black ; the legs fusco-ferruginous ; wings hyaline. First 



