484: Mr. F. Smith's descriptions of n civ species 



punctured ; an impressed line runs from the anterior occlhis 

 to the antennoe ; the clypeus covered with briglit silvery 

 pubescence; the mandibles and scape of the anteniuii yel- 

 low, the latter sometimes with more or less of black behind. 

 Thorax closely and very finely punctured ; the metathorax 

 with a deep longitudinal central cliannel; the enclosed 

 triangular space at its base impunctate ; the space beyond 

 smooth, and Avith only a few very delicate punctures ; just 

 above the insertion of the abdomen a few transverse strise; 

 the sides Avith a little silvery -white pubescence ; wings 

 subhyaline, darkest towards their apex ; the post-scutellum 

 yellow, sometimes two yellow spots on the scutcllum ; the 

 anterior femora, except at the base, the tibite, the basal 

 and apical joints of the tarsi, yellow ; the intermediate 

 legs, Avith the apical half of the femora beneath, the tibiio 

 at the base and more or less in front, and the base of the 

 first joint of the tarsi, yelloAv ; the posterior tibire clavatc, 

 and with a fcAv spines on the outer margin of the club 

 yelloAv at their base. Abdomen clavate, smooth and 

 shining ; the apical segment punctured and margined 

 laterally. 



Male. — Very like the female ; differs in having the 

 flagellum fulvous beneath, beyond the second joint, in 

 other respects the same. 



The second and third segments of the abdomen are 

 sometimes more or less ferruginous, 



Rliopalinn carhonnria, Smith, Cat. Hym. Ins. pt. iA'. 

 424, is figured ; it resembles the R. perforator^ but is a 

 larger and more conspicuous insect (PI. IV. fig. 7, $). 



ANDRENIDiE. 



Prosopis agilis. 



Female. — Length 3^ lines. Black; head suhopaque, 

 very closely and finely punctured ; Avlien vicAved in fi-ont, 

 nearly quadrate ; a yelloAV macula on each side of the fiice 

 Avhich is broad and truncate opposite the insertion of the 

 antenna^ and narroAvs to a point at the base of the man- 

 dibles; tlie flagellum, except tAvo or three of the basal 

 joints, fulvous "beneath. Tliorax slightly shining, very 

 "fine! v and closely pmictured above ; the metathorax smootli, 

 shining and impunctate ; Avings subhyaline, the nervurcs 

 black ; an interrupted line on the collar, and tlie tubercles, 

 yclloAV. Abdomen clongatc-ovate, smootli and shining. 



