230 THE CANADIAN ENTOMOLOGIST. 



Females. 

 Length 12 mm.; abdomen tjuite elongated, with approximately parallel 



sides, entirely bright ferruginous Kincaidii. 



Length less than 1 1 mm.; abdomen ordinary i. 



r. Mandibles simple 2. 



Mandibles dentate 3, 



2. Length about 934 mm.; labrum very large Olympicus, 



Length barely 7 mm.; labrum small Washitigioni. 



3. Abdomen scarcely punctured ; size smaller minor. 



Abdomen with distinct but minute punctures, at least on second, and 



following segments ; size larger 4. 



4. About zy^ mm. long ; enclosure of metathorax semilunar, 



distinct hesperellus. 



Larger ; enclosure of metathorax not defined arvensi/or?fiis. 



Males. 



Abdomen practically impunctate; segments 2 and 3 red, the others nearly 

 all black ; tarsi light yellowish minor. 



Abdomen strongly punctured ; segments 2 and 3 with large median black 

 cloud ; I with apical margin red, the rest nearly all black ; tarsi 

 brownish hesperellus. 



Sphecodes Kincaidii, Ckll., Proc. Acad. Nat. Sci., Phila., 1S98, p. 56. 

 19th June, 1895, Olympia, Wash. (Kincaid). 



Sphecodes ( Drepanitim) Olympicus., n. sp. 



One ^, Olympia, May loth, 1896 (Kincaid). 



Length about 9^/^ mm.; head, thorax and legs black ; flagellum 

 brownish beneath apically ; mandibles dark reddish, black at base ; 

 wings only slightly grayish; stigma dark reddish brown ; abdomen bright 

 chestnut red, the fifth segment black, apical plate chestnut red, broad and 

 truncate, faintly emarginate. Mandibles simple, long and falciform; 

 labrum very large and long, smooth, densely punctured at extreme base, 

 emarginate at apex ; clypeus very densely punctured ; flagellum densely 

 and minutely rugoso-punctate ; 3rd joint of antennas distinctly longer than 

 4, 4 equal to 5 ; mesothorax rather closely punctured, with a strong 

 anterior median sulcus ; base of metathorax reticulate ; abdomen scarcely 

 punctured. 



The three species of Drepanium, falci/er, fortior and Olympicus, 

 are very closely allied, but may be readily separated by the following 

 characters ; 



