( 350 ) 



Sesiirlae Stephens, llbistr. Bill. Ent., Ilaiist. i. p. 132 (1828) ( parti m ; type: HannnrrhtKjia 



fuci/itrmis). 

 Mufrofjhtssini Grote & Robinson, Prnc. Eiit. Soi: Pliilml. v. p. 149 (1SG5) (num. iiiiil. ; partim). 

 Chavrnrdinjt/ni iid., I.r. p. 153 (186')) {mn . nnd. ; partim). 

 SphiiKjini iid., I.r. p. llil (18()5) {iiDin. iiiiil. ; partim). 

 " Euryglottides " Boisduval, .S/w. Gen. Up. Hel. i. p. G8 (187r)) (partim). 

 "D«l(-pbilides" id., /.c. p. 158 (1875) (partim). 

 " Maoroglosfides " id.. I.e. p. 280 (1875) (partim). 

 Maeroghisniiiae Butler, Tmii.-<. Zool. Sue. Limrl ix. p. SlIi. 517 (1877) (partim ; incl. type of Scxiiime); 



Smith, Trail-'. Amer. Ent. Sne. xv. p. 8<i (1888) (partim). 

 Chaeroedw/iiiiae Butler, I.e. p. 516. 544 (1877) (partim) ; Smith, I.e. p. 115 (1888) (partim). 

 Sjihinijiiiae Buller, I.e. p. 517. 598 (1877) (partim) ; Smith, I.e. p. 150 (1888) (partim). 

 Dilnpliiiiialklar Burmeister, De.vr. liqi. Argent, v. p. 325 (1878). 

 Dtilrphilnhir id., /..•. p. 336 (1878) (partim). 

 Pterngonirlne id.. I.e. p. 342 (1878) (partim), 

 Maernglnssidae id.. I.e. p. 356 (1878) (partim). 

 Smtrinthimie, Smith, I.e. p. 212 (1888) (partim). 



(? ? . Tenth abdominal segment mesially divided, oi'teii asymmetrical, the left 

 half of the tergite and sternite, or the right half of the sternite, being sometimes 

 reduced, vestigial, or even absent ; right and left claspers occasionally also nnequal; 

 no large friction-scales. The lower genera with uniserial abdominal spines, at least 

 on the last segments, the spines all long, or long ones alternating with small ones. 

 The seventh sternite of the ? trapeziforra, or sinnate, often spinose at the apical 

 edge, sometimes only laterally ; if the sternite is small and triangular, and the 

 spination of the tergites mnltiserial, the mesonotnm is prominently crested or the 

 palpns angnlate laterally. 



One hnndred and tliirfy-three species belonging to twenty-four genera. One 

 genns is Holarctic {Ilaemorrliayia), extending into the Oriental Region ; one is 

 Oriental (Sataspes), and one Aethiopian and Oriental (^Cephonoded) ; all the others 

 are American. 



Two tribes, Dilophonoticae and Sesiicae. 



Key to the genera : 



a. Spines of abdomen not uniseriate, 



those of proximal row of tergites 



broader than long ...... v. 



Spines of ])roximal row of tergites 



longer than broad ...... k. 



Spines of distal tergites uniseriate, 



all long, or long and short ones 



alternating ....... b. 



b. Basal sternite of abdomen with strong 



spines XUIII. Oryba. 



Basal sternite of abdomen with few 



weak spines, or not spinose . . . . c. 



c. Posterior tergites with long and small 



sjnnes alternating . . . . . . d. 



Posterior tergites with long spines 



only, or with very few short ones . . . f. 



d. Hindwing ochraceous or cinnamon- 



rufous, or thorax crested . . XCVI. Hemero planes. 

 Not so e. 



