( 345 ) 



beyoud middle, then soiucwliat pr.ijeoting frontad, I'omiiiig a rounded lobe; K- 

 of biiidwing before centre of cill, IJ- soiuewbat curved, U^ not or little shorter 

 than D' ; frenulum restigial, retinaculum absent. Antenna peculiar ; ? : segments 

 all longer than high, especially the distal ones, eacii thickest basally, the sides 

 slightly rounded basally in dorsal view, and feebly sinuate apically ; broader than 

 high, and also than long excepting distal segments, depressed, somewhat prismatical, 

 the ciliated surface feebly concave in middle, no distinct groove, no indication of 

 pectinations, ciliae short, fasciculated ciliae barely indicated ; S : segments much 

 more obviously truncate pear-shaped in dorsal view (PI. LXI. f. 3. 4. 5) than in ?, 

 strongly compressed ventrally, sides deeply grooved, the groove bordered above by 

 a kind of carina, which projects a little over the groove, this carina not scaled ; 

 it is homologous to the lateral expansion of other iSphingid anteniiae ; the com- 

 pressed ventral jiarts of the segments separate (PI. LXI. f. 3, lateral view) ; 

 each segment produced subveutrally on each side into an apical and a longer basal 

 process which project laterad, the processes compressed, the longer diameter of 

 the transsection vertical ; the fascicles of long ciliae along the edges of the processes, 

 forming on each segment, with the other fascicles, au apical and a basal row, whicii 

 rows join each other above, the arrangement of the fascicles, therefore, the same 

 as in other Sphingidae. The processes being expansions of the ciliae-bearing area 

 are as a matter of course not scaled ; they are not homologous with the branches 

 of other jie^tinated Sphingid antennae, excepting those o\' Monarda, agreeing best 

 with those of Satttrniiftae, as pointed out by Smith. The segments are slightly 

 asymmetrical (PI. LXI. f. 5). The antenna differs, however, essentially from 

 that of the Saturniids and Ceratocampids in being scaled above, in possessing deep 

 side-grooves, in the ventral part being strongly compressed, and in the single 

 sensory cone being conspicuous and remaining in its place close to the end of the 

 segment. 



Larva pale green or reddish, with obli(iue side-stripes, which are bordered with 

 red in fiont or are preceded by red sulnlorsal spots, these red spots resp. borders 

 sometimes absent, anal segment mostly with a dark mesial streak; heavily granulose, 

 head strongly triangular, bifid, sparsely granulose all over ; horn long, feebly 

 curved, grannies very high ; anal tergite with a higher grannie at each side of 

 the dark me^ial streak. — Food-plants : Jaylans, Ostn/a. 



Pupa opaque, head with four projections, antenna-case with a row of sharp 

 granules or teeth, Semites 4 to 6 of abdomen with a subapical carina wliich is 

 dentate laterally in c?, laterally and ventrally in ? ; tongue-case triangular, much 

 shorter than the cases of the forelegs, reaching oidy one-third the way from its base 

 to the apex of the wing-cases ; abdominal segments 7 to lU ventrally flat, the sides 

 snbcarinate, those of segment 8 ex])anded, armed with sharp teeth which point 

 frontad, eighth segment humped dorsally in S; cremaster truncate, angles jiroduced 

 laterad into a sharp tooth. 



Hab. Canada to Fhirida and Texas, westward to the Mississippi basin. 



One species. 



282. Cressonia juglandis. 



Sphinj- jiiglandis Abbot & Smith, Lej>. Georgia i. p. 57. t. 29 (1797). 



Sphinx instubili.i Martyn, P.'<i/c/ie t. 20. f. 49 ; t. 21. f. 53 (1797). 



Ariuirpha tfentald Jii(j!,iiuli>i, Hiibner, Sanuiil. Ex. Schm. i. t. 171 (180iJ-24). 



Polyptijchusjufjlaiulis. Hiibuer, Verz. bck. tichm. p. 141. n. U.IO (1822). 



SmeriiUhus juglandis, Lepelletier & Serv., I.e. p. 441 (1825); Harris, in Sillitn., Juuni. Sci. Art 



