and on the Sjh < u \ Inj which they were constructed, 



the extremities of the other tai dng, entirely transparent, with i pi 



stigma, an ippendiculated marginal cell and three lubmarginalj the Lei nrj k»( 

 receiving two recurrent nerrureaj 2nd cell small, ilighti? rhomboidaJ (fig, i . / 

 rufous; 2nd joint of antenna brown, Srd rictoceoua-black ; abdomen \ 

 basal tegmenta rough and black: winga transparent: luperior with the baa 

 across the middle including the stigma, the tip end the inferior margin pioeona with 



a ehalybeous shade ; inferior pitehv and ehalybeous at the btae and externa] margin and 

 transparent round the disc: hinder tibial black, oehnottl at the bate, irith a stripe of 

 the same colour and silky on the inside: I binder tarti fuecons, excepting the basal joint, 

 which is yellowish-white tipped with fuse. J . The insectl are drawn a t: 



larger than life, but the relative proportions oft!. w ,|. 



I have dedicated this species to the gentleman to whom we are indebted 

 for this valuable addition to tin- economy of in- I considered it at first 



to be the Hylotoma formosa of King, whose essential character of the female 

 is "coccinea, abdomine mgro-violaceo, alU hyalinis, barifascid media <//,;<<<//,< 



tiigris* ;*' but in his German deseriptioii he says, the two basal joints of the 

 antenna* are red, the posterior legs black with red trochanters and thighs. 

 and the basal portion of the abdomen is red beneath : now in I). EUisii the 

 abdomen is entirely blue beneath in the female, the base and inside of the 

 hinder tibiae are ochraceous, and the basal joint of their tarsi is whitish ; the 

 2nd joint of the antennae is also brown above. The male of King's specie- 

 was unknown to him. 



Different as the sexes are, this is not an isolated example amongst the Ten- 

 tkredinidce, for an equal dissimilarity is exhibited both in form and colour in 

 Lophyrusf \ it is, however, very remarkable that the ncuration of the wings i- 

 not always precisely the same in the two sexes of J). E/lisii, the female not 

 unfrequentlv having a transverse nervure forming an additional cell next the 

 stigma, which increases the number of submarginal cells to four. The males 

 seem to be rare, for amongst upwards of twenty specimens three only were o( 

 that. sex. 



The economy of this insect is so totally different from that of any other 

 known species, as far as my researches extend, that if there were not the best 



* Jahrb. der Insect, vol. i. p. 248. 



f Vide L. testaceus, Klug, and L. Pini, Linn., Curt. Brit. Ent. pi. 54. 

 VOL. XIX. 2 L 



