170 THE CANADIAN ENTOMOLOGIST. 



immaculate. Hind femora moderately slender, uniformly brownish, often 

 darker above and externally and sometimes with slight fuscous genicular 

 markings. Hind tibiae yellowish brown, the spines tipped with black, ten 

 to eleven in the outer series. Extremity of male abdomen neither swollen 

 nor upturned. Furcula broad as in the other members of the group to 

 which this species belongs ; cerci shaped very much the same as those of 

 M. Bowditchi, somewhat incurved and externally sulcate at the tip, some- 

 times very inconspicuously so. Subgenital plate long, apically narrow. 



Length: elytra, male iS.5to 19.5 mm., female 23 to 24 mm.; hind 

 femora, male 10.5 to 11 mm., female 13 to 14 mm. 



Three males, three females, Yuma, Arizona, 



Type No. 6302. U. S. Nat. Mus. 



These specimens were sent to the Department of Agriculture by the 

 collector, Mr. Herbert Brown, superintendent of the territorial prison 

 at Yuma, Arizona. They were collected on December 8th, 1901, a few 

 miles from Yuma, up the Colorado River, at the head of a dry slough. 

 They belong to the Bowditchi series, and the species is most nearly allied 

 to M. fiictus, from which it is readily distinguished, however, by the 

 differently-shaped cerci and the smaller size. 



ACKNOWLEDGMENTS. 



On the 26th of May, 1902, I received from Mr. C. G. Anderson, 

 London, a freshly-emerged specimen of Papilio Ajax (spring form, 

 Teiamonides, Feld.), taken by him at Kingsville on the 24th— -another 

 testimony to the southern character of the flora and fauna of Lake Erie's 

 northern shore. 



I desire to give expression to my pleasure in receiving from Mr. J. 

 A. Morden, London, Ont., twenty-four specimens of that rarely-observed 

 beetle, Cyllene pieties, Drury, which he secured for me out of a stick of 

 bitter-nut hickory in the first week of May, 1902. 



]. Alston Moffat. 



