1903.] NATURAL SCIEXCES OF PHILADELPHIA. 597 



about half-way up; scape scarcely swollen, dull yellow and striato- 

 punctate in front; flagellum rather dark ferruginous, the basal half 

 more or less black above; third antennal joint shorter than fourth; 

 thorax very densely punctured ; narrow stripe on upper margin of pro- 

 thorax, tubercles, round spot (not conspicuous) on anterior part of 

 pleura (sometimes absent), and two oval spots on scutellum (which 

 may be absent or represented by very small reddish-yellow spots), all 

 yellow; an orange stripe on postscutellum, and an orange dot at each 

 anterior corner of scutellum, may be well-developed or practically obso- 

 lete; tegulse more or less pale yellow; wings clear, dusky at apex, 

 nervures dark brown, stigma dark ferruginous; second and third sub- 

 marginal cells equally broad above, or the second may be somewhat 

 broader; basal nervure a considerable distance basad of transverso- 

 medial ; legs pale ferruginous, with yellow knees and yellow stripes on 

 the tibiae ; most of coxae, base of middle femora, and hind femora except 

 apex, black; abdomen dark brown with six bright yellow bands, that 

 on second segment very broad, and not much narrowed in the middle, 

 that on fourth inclined to be narrowly interrupted; apex bidentate; 

 venter dark reddish marked with yellow. 



Hob. — Round ]\Iountain, Tex., three in Coll. of Acad. Nat. Sci. Phila. 

 Collector unknown. Also two from Colorado (Baker collection. No. 

 1,871), in the National Museum. The species has been recorded from 

 Rock Island, 111., and Berkeley, Cal., but possibly the specimens from 

 the latter locality may be wrongly determined. 



]\Ir. Viereck very kindly went over the Avhole Cresson collection to 

 see if there were any species of Gnathias not recognized as such by me. 

 He found only N. lepida; N. amccna Avas not in the collection, and 

 could not be examined. I had described A^. lepida as new, and it is 

 only Mr. Alereck's reference of it to Gnathias that has enabled me to 

 correct the error. I let my description stand, as it will probably be 

 useful. 



Nomada grayi eastonensis, subsp. n. 



9 . — Length about 8 mm.; red. Differs from A^ grayi by the third 

 submarginal cell narrowing to a point above, the anterior orbits diverg- 

 ing less above, and the greater amount of black at the base of the first 

 abdominal segment. In the type specimen, and also in the type of 

 N. grayi, the first ventral abdominal segment has a black mark resem- 

 bling a fish-tail. 



Hah. — One specimen, marked "Easton, Wash., K.," is in the Na- 

 tional Museum. Another marked "W. T." in Coll. of Acad. Nat. Sci. 



