132 [August 



black ; the others black, narrowly margined with yellow, and the last 

 segment fulvous, with a black spot on the middle, and ciliated on each 

 side with long golden hairs. Wings slightly tinged with yellowish- 

 brown, with the extremity margined with deeper brown. Legs fulvous, 

 with the external margin of the tibias and the tarsi, yellow. Length 

 16 mill. 



" //a6.— New Orleans." 



Tbis seems closely allied to G. venntor nob., and may be identical 

 with it. The legs are, however, somewhat differently colored. 



32. Cerceris laevigata, Smith. 



Cerceris laevigata, Smith, Brit. Mus. Cat. Hym.. iv, p. 465. 



" Fcmidf. Length 4 lines. — Black and very delicately punctured ; 

 the face, base of the mandibles, and a line behind the eyes, yellow ; 

 the flagellum fulvous beneath. Thorax : the collar, tubercles, a spot 

 beneath the wings, the scutellum, and an oblong macula on each side 

 of the postscutellum, yellow; the anterior and intermediate tibiae, and 

 the posterior pair at their base, yellow ; the anterior tarsi yellow, with 

 the apical joints slightly ferruginous, the intermediate and posterior 

 pair fusco-ferruginous ; wings slightly colored, with a fuscous cloud 

 on the anterior margin of the superior pair. Abdomen very delicately 

 and sparingly punctured and shining; the first segment with its apical 

 margin yellow, a slight notch in the middle of the band; the second, 

 third and fourth segments with a yellow fascia on their apical margins, 

 very much attenuated in the middle and widened at the sides. 



" The male has a yellow band on the first and four followins, seu- 

 ments. 



" H<d>. — 8t. Domingo." 



33. Cerceris Perboscii, Guer. 



Cerceris Perboscii, Guer. Icon. Eeg..Vnim. iii, p. 444. 



"Black ; front of the head yellow, with two black circles, one above 

 the other, forming a figure 8. Antennae black, with the base brown. 

 Two small yellow lines on the posterior margin of the prothorax ; teg- 

 ulae black, the anterior margin yellow ; a small yellow obli(jue spot on 

 each side of the mesothorax ; scutellum yellow, metathorax broadly 

 margined on each side with yellow, and with two oblong spots of the 

 same color on the middle. First and third segments of the abdomen 

 broadly margined behind with yellow. Wings transparent; the ante- 

 rior half of superior pair, as well as base and tip, obscure brown. Legs 

 black, with the front of the four anterior tibijx) yellow. Jjongth 8 mill. 



" Hah. — Bay of Campeche." 



