( l-'R ) 



wliiit we liiivc ilcscrilu il iiliove as islar was, tlicrcibre, ccrtiuiily crroiicoiis ; his 

 sufrgestiou tliiit, rdndi/cnsix ini-ilit be leiirophacata was likewise wide of the mark. 



i. Tentli abdominal tergite similar to that of Protoparce <iuiniiuem(u:ulatui^, 

 more cylindrical, loss compressed ; sternite elongate triangular, straight, obtuse, 

 lateral margins very feebly turned uj)wards, very faintly notched. Clasper straight 

 ventrally, strongly rounded apically, dorsally gra<lually and ratiier strongly dilated 

 towards apex, the dorso-ajiical margin curved inwards, dorsal groove deep, bordered 

 ventrally by a prominent fold, which bears long bristles ; harpe strong, dorsal 

 and ventral margins almost straight and parallel, apex sinuate, denticulate 

 (I'l. XXXVIII. f. 4). Penis-sheath (PI. XXIX. f. U) i)roduced into a long, 

 gradually narrowing, pointed lobe, which is bent to a hook. 



?. Vaginal jilate (PI. XX. f. 1(1) not strongly chitinised, much folded 

 proximally ; a longitudinal mesial groove, narrowing proximally, where the edges 

 of the folds which border the groove nearly touch each other above the vaginal 

 orifice ; within the wider distal part, behind the orifice, there is a rounded carina. 



Early stages not known to us. 



llah. Mexico ; Panama ? 



In the Tring Museum 1 S $ , 3 ? ? from Mexico: Orizaba, Huatuxco, and 

 Teocelo, Vera Cruz. 



Wl. Hyloicus chersis. 



Leth'ia diersia Hiibner, Samml. Ex. Schm. ii. t. 107 (1824 V). 

 Sphinx cinerea Harris, in Sillim., Journ. Sci. Art xxxvi. p. 295. n. 6 (1839). 



Sphhix cheriiis, Smith, Trans. Amer. Eiit. Soc. Loud. xv. p. 184. t. 9. f. 6 (genit.) (1888) (Canada to 

 Georgia, westw. to Calif.). 



(^ ? . No black mesial line on mesothoracic tegula ; mesonotum always grey, 

 no black-backed form known ; black dashes on underside of abdomen comparatively 

 larger in the large form than in the smaller ones. Spines at outer side of first 

 segment of foretarsus and at the end of foretibia prolonged ; parouychium reduced, 

 without long lobe ; first segment of hindtarsus as long as hiudtibia ; long apical 

 spur of hindtibia half the length of the first tarsal segment ; first segment of 

 midtarsns with comb, but the bristles rather stout and not much prolonged. 



rS. Tenth abdominal tergite elongate-triangular, sulcate above excejit at end, 

 which is convex, acute, and curved downwards ; underside concave ; sternite with 

 a broad and rather long lobe, which narrows somewhat to the end and is feebly 

 sinuate. Clasper sole-shaped ; harpe (PI. XXXVIII. f. 5) divided by a broad distal 

 sinus into a broad ventral lobe and a long horizontal process ; the ventral lobe is 

 concave, the upper and lower margins being bent inwards, especially the upper, 

 which is irregularly and distinctly notched, while the distal and ventral edges are 

 almost smooth as a rule ; the slender process is cylindrical, tapering towards the 

 pointed end, curving ujiwards a little, reaching the apical fourth of the clasper. 

 Penis-sheath (PI. XXIX. f. 11) produced into a long, narrowing, pointed, somewhat 

 twisted and curved process. 



?. Vaginal ]ilate (PI. XX. f. 17) with a wide apical cavity of which the 

 bottom is smooth, without a tubercle, the i)latc not divided mesially as in 

 perelegans, /lalmiae, and lanccohita, but the slit indicated by some longitudinal 

 wrinkles. 



Larva with dispersed granules, which are denser on the thorax ; head distinctly 

 narrowed above. — Food : Syrinya, Fraxinits, Liyu-^tnim. 



Hah. Nearctic Pegion, from Canada to Mexico and California. 



