392 PROCEEDINGS OF THE NATIONAL MUSEUM. vol. xxxi. 



CHLORION (PROTEROSPHEX) SPINIGER (Kohl). 



.?>S/i7i,e.r dor.s«7/.s Lei'eletier, Hist. Nat. In^. Jlyin., J II, lS4o, j). 847, male. 

 Spliex habena CiiKsso's, Trans. Am. Ent. Soc, IV, 1872, p. 211 (misidentifiiation). 

 f Sphex sivgularis CAMBRoy;, Bio\. Centr.-Amer., Hym., II, 1889, p. 33, pi. iii, 



figs. 7, 7a. 

 Sphex spiniger Kohl, Ann. natur. Ilofmus. Wien, V, 1890, ]>. 428. 



Rather small insects; l)ocly black, sometimes with more oi' less fer- 

 ruginous; legs the same; pubescence silver}^ to golden; hairs yellowish 

 to gray. 



Female. — Unknown; see remarks ])elow, and after Cldorion dtiJjlta- 

 tum. 



Male. — Head black, rather broad; clypeus and frons to above the 

 antennae covered with golden pubescence and long, golden hairs; ante- 

 rior margin of the clypeus rather truncate, without teeth or projec- 

 tions; vertex and cheeks with numerous long, pale golden hairs; dis- 

 tance between the lateral ocelli greater than from them to the eyes; 

 cheeks about half the width of the eyes, with traces of golden or paler 

 pubescence below; inner margins of the eyes somewhat converging 

 downward; antennae black, the scape quite thickly clothed within and 

 below with short, yellow hairs and with a trace of pul)escence; the 

 first segment of the filament longest; mandibles black, ver}' faintly 

 ferruginous near the bases of the teeth, rather slender, somewhat acicu- 

 lated beneath, and with a few yellowish hairs on the posterior face. 



Thorax. — Collar sparsely covered with whitish hairs, silverv pubes- 

 cent on its dorsal edge and with traces of pubescence at the side below; 

 not closely appressed against the mesonotum; its front and rear faces 

 nearly vertical; with a slight but noticeable median depressed line in 

 front; prothoracic lobe with scattered punctures anteriorly; with pale 

 3"ellowish, almost silvery pubescence posteriorly; mesonotum with a 

 pale yellow or whitish pubescent band on each side, beginning about 

 opposite the anterior edge of the tegula and running backward along 

 the margin of the plate to its posterior end, then turning inward but 

 not usualh" meeting the band from the other side; the rest of the meso- 

 notum closely, rather minutely, punctured; the anterior median groove 

 rather deep; the entire plate quite thickly covered with pale, yellowish 

 hairs not as long as those of the head but obscuring the pubescence; 

 scutellum black, with numerous fine punctures, a slight median groove, 

 and covered with yellowish-whit^ hairs, shorter and less noticeal)ie 

 than those of the mesonotum; postscutellum covered with silver}' 

 pul)escence and long hairs; median segment thickly clothed with pale 

 3'ellowish hairs, shortest on the dorsum, which is faintly rugose in 

 places, almost irregularly transversely aciculate; the dorsum has a 

 very slight depression anterior to the fovea; posterior end of the 

 median segment with a pair of silvery pubescent spots, confluent on 

 the middle line, the surface between these and the stigmatal groove 



