144 Bulletin Wisconsin National History Society. [Vol. 9, No. 4. 



in T. mi n nt tun Riley. Abdomen a little longer than 

 the thorax, but no wider seen from above. Antennae of 

 male with long hairs, those on the club, in some cases, 

 as long as the club itself ; in $ they are naked ; joint a 

 little shorter than in T. minutum, as are the entire an- 

 tennae. Wings and legs much as in T. minutum, but the 

 legs are rather slenderer. 



This minute form may be at once distinguished from 

 T. minutum by being about half as large, and by the 

 much paler, naked antennae in $> , and narrower abdomen. 



Length $, .01-.0H inch; $, .01§-.02 inch. 



Bred from Papilio turnus, June 29-30 by S. H. 

 Scudder. 



These two species seem, without doubt, to be closely 

 allied to and congeneric with the species of Tricho~ 

 gramma figured by Prof. J. O. Westwood in his "Descrip- 

 tions of some minute Hymenopterous Insects. (Trans. 

 Linnaean Soc. London, 1878, pi. lxxiii.)" [pp. 37-38.] 



This description has never been repeated in print but Howard 

 ( 1889a) paraphrased it as follows, giving additional details also, 

 in a note of Scudder's making and previously indicating its dif- 

 erence from intermedium and minutum m the manner quoted in 

 full elsewhere : 



Trichogramma minutissimum Packard. 



Body uniformly pale testaceous or honey -yellow, legs 

 and antennae scarcely paler than the bod3 r . Abdomen a 

 little longer than the thorax, but no wider, seen from 

 above. Antennae a little longer than in minutum, legs a 

 little slenderer. Length, $ , .25 mm. to .37 mm. ; $ , .38 

 mm.-.5 mm. (After Packard.) 



(The following description of the colors was taken 

 during life : — Body and head wax-yellow ; face a little 

 paler ; eyes and ocelli dark orange ; body with yellow- 

 green internal blotches appearing through the skin ; legs 

 and antennae pale yellow, apical half of tarsi a little 

 dusky. S. H. S.) 



In the material sent me by Mr. Scudder I find eight 

 slides of this species, three labelled from eggs of Jasoni' 

 ades glaucus, three from eggs of Basilarchia archippus, 

 and two from eggs of Vanessa atalanta." p. 1895. 



