614 PROCEEDINGS OF THE ACADEMY OF [Aug., 



markings of the Califoriiian male N. rJiodosoma are rather suggestive 

 of the European N. flavoguttata (Kirby); at least, the abdomens are 

 extremely similar, though the slender dark legs, very dark antennae, 

 reduced face-markings, and small black tegulce of flavoguttata are quite 

 different from those of rJiodosoma. ]My material of flavoguttata is from 

 ]\Ir. Friese. 



Nomada ruficornis, (L). 



A male sent by l\Ir. Viereck, from College Park, Md., April 10, 1898, 

 is referred to this species, as it agrees with the description; but I have 

 not been able to compare it with European specimens. 



Nomada cressonii, Rob. 



In the National ^luseum is a male from Indiana, with the Bakerian 

 number 1.876. 



Nomada kincaidiana, sp. n. 



? .^Length almost 9 mm, ]:)right ferruginous. Much lighter, and 

 with a narrower abdomen than N. clarkii; looks like A^. erythrochroa or 

 A^ ruhrica; differs from erythrochroa by its minutely roughened, slightly 

 broader and darker abdomen; broader and less bilobed scutellum; 

 broader face less narrowed below ; black lines from antennae to middle 

 of sides of clypeus; smaller eyes; black patch before middle coxse, and 

 anterior coxse without distinct spines. (In erythrochroa the anterior 

 coxae have very long spines.) The basal nervure is a moderate distance 

 basad of the transverso-medial, while in ruhrica they almost meet. 

 The third and fourth antennal joints are both considerably shorter than 

 in ruhrica. 



Hah. — Washington State, one in Coll. of Acad. Nat. Sci. Phila. 

 Named after Prof. Trevor Kincaid. 



