1865.] 109 



Yiif, % . — Much smaller, the markings are lemon-yellow, the mark 

 between and above the insertion of the antennae is somewhat wedire- 

 shaped ; the ferruginous stain on the cheek is large, with a yellowish 

 line on the posterior orbit; the line on the collar is slightly interrupted 

 ia the middle; the breast has a semicircular yellow line on each side 

 of the middle, where they are almost confluent', the postscutellum has 

 a narrow yellow line, and the metathorax a subpyriform mark on each 

 side; the wings are paler, though similarly colored; the legs are pale 

 honey-yellow, with the coxcie and trochanters beneath, and the poste- 

 rior tibi;c exteriorly, yellow; the markings of the abdomen are the 

 same, except that the band on the fifth segment has a black dot on the 

 middle of the anterior margin, the sixth segment has a band deeply 

 emarginated in the middle anteriorly, and the second ventral segment has 

 an interrupted yellow line, while the two or three following segments 

 are brownish, with an obsolete yellowish spot on each side. Length 

 5 lines; expanse of wings 9 J lines. 



Bab. — llocky Mountains, Colorado Territory. (Ridings.) Coll. Ent. 

 Soc. Philad. 



Two % specimens; 9 unknown. This is indeed a superb species, 

 the color and markings are bright and handsome, and the wings beau- 

 tifully colored. 



4. Eucerceris flavocinctus, n. sp. 



Black : spot on each side of face, line between antennae, spot at base of cly- 

 peus, spot behind eyes, interrupted line on collar, tegulae, tibiae and entire fas- 

 ciae on abdomen, yellow: tarsi fulvous; wings subhyaline, the anterior mar- 

 gin fuscous. 



Female. — Deep black, shining; head not unusually wide, closely 

 punctured ; a cuneiform mark on each side of the face, a line between 

 the antennae, pointed above, dilated beneath, and confluent with a 

 transverse spot on the middle of the elypeus. which has sometimes a 

 yellow dot on each lateral lobe, and a spot behind the eyes near their 

 summit, yellow; anterior margin of the elypeus broadly emarginated ; 

 mandibles and antennae black, the base of the flagellum slightly tinged 

 with dull testaceous. Thorax shining above ; mesothorax and scu- 

 tellum with scattered, rather fine punctures, the former with a short 

 impressed line on each side over the tegulae ; pleura closely punctured; 

 metathorax finely sculptured, the punctures running into fine trans- 

 verse striae especially on the sides, the enclosed basal space covered 

 with fine, slightly oblique strias, and with a deep central longitudinal 

 channel; an interrupted line on the collar, and sometimes another on 

 the postscutellum. yellow ; tegulai honey-yellow, with a yellow spot in 



