56 Myron Harmon Szi'cnk 



Nomada (Nomada) vicina Cresson. 



1863. Nomada zncina Cresson, Proc. Ent. Soc. Phil, II, pp. 292-94, 



1903. Nomada vicina Robertson, Can. Ent., XXXV, pp. 178-70, ? d". 



To the Connecticut, New York and Illinois records of this 

 species may be added that of a typical female collected at Grand 

 Rapids, Michigan, August 27, 190 1, by R. H. Wolcott, and found 

 to be identical with a homeotype specimen from Watch Hill, 

 Rhode Island, compared by H. L. Viereck and now in the U. S. 

 National Museum. 



Nomada (Nomada) vicina stevensi n. subsp. 



$. Length 8-9 mm. Exactly like N. vicina $ but the abdominal macula- 

 tions cream color or very pale yellowish white (bright chrome yellow in 

 typical vicina), the four red lines on the mesoscutum broader, sometimes 

 involving most of the sclerite (narrow and often subobsolete in vicina), 

 and the front orbital margins and apical margin of the cylpeus broadly 

 red, sometimes involving most of the sides of the face and the clypeus 

 (the sides of the face and apical margin of clypeus usually very narrowly 

 or obsoletely red in vicina). 



(^. Length 6.5-8.5 mm. Like iV. vicina S but the upper half of the cly- 

 peus is black and the lower half of the clypeus, together with the labrum, 

 short triangular lateral face marks, the scape in front and the abdominal 

 bands, is cream color (in tj'pical vicina the whole of the clypeus, labrum, 

 lateral face marks, scape in front, and abdominal bands are yellow), while 

 the mandibles except tips, the orbits of the eye beneath, the tubercles, 

 the tegulae, the pleural spot, the mesoscutellum and the paler markings 

 of the legs are red (in typical vicina the mandibles except tips, the 

 orbits of the eye beneath, the tubercles, the tegulae, and the pleural spot 

 are yellow, while the mesoscutellum is blackish sometimes with an obso- 

 lete yellowish spot and the first four legs are washed with yellowish in 

 front). In some specimens of z'icina stcirnsi the labrum, clypeus and 

 lateral face marks have the cream color more or less heavily suffused 

 with red. 



Type. — Fargo, North Dakota, August 17, 191 1, on GrindeUa 

 squarrosa (O. A. Stevens, No. 2ygy), 5. 



Allotype. — Type locality, August 17, 191 1, on GrindeUa squar- 

 rosa (O. A. Stevens, No. 2801), J*. 



Paratypes. — Type locality, August 17, 191 1, on GrindeUa 

 squarrosa (O. A. Stevens, Nos. 2796, 2798, 2799, 2800), 2 $, 2 c^; 

 do., August 7, 191 1, on MclUotus alba (O. A. Stevens, No. 2605), 



56 



