1911] Study of Caterpillars of Sphingidae 269 



Lapara (Ellema). Skin quite smooth, not only in the last, 

 but in earlier stages. Horn wanting entirely. Anal plate 

 fully as long as wide and acute. Head somewhat higher than 

 wide, (Fig. 4), in the earlier stages extremely high, triangular, 

 with small and distant tubercles, like Fig. 12; front § 

 its height, higher than wide. Labrum (Fig. 5) with a very 

 shallow notch, broadly flaring, with the apex of the lobes far 

 to one side and the outer edges nearly straight; i lower than 

 ii, but not so much so as in Hyloidus, i and ii about equally 

 spaced; both crowded down toward the margin; vi decidedly 

 nearer the middle line than ii. Scrobe of mandibles smaller 

 than usual. Second joint of antenna hardly longer than wide, 

 and first joint very short. First ocellus directly behind the 

 second, and nearer to the posterior one than the second is to 

 the fourth. With longitudinal stripes, or checkered, never 

 with obliques. 



Except for the labrum and markings, which are essentially 

 as in Hyloicus pinastri, there is nothing to connect this genus 

 with the Sphinginae in the caterpillar; there are a couple oi 

 parallelisms to the Smerinthincc; the shape of the head, and low 

 first ocellus as in Cressonia. 



I cannot distinguish the species in the caterpillar. 



Smerinihus (Sphinx) and Paonias (Calasymbolus) (I, Figs. 

 42-44). Head decidedly higher than wide, triangular; with 

 nearly acute apex and sides somewhat rounded out; with 

 numerous widely spaced raised tubercles, each bearing a seta; 

 front about as in Sphinx, with several tubercles somewhat 

 smaller than those on the epicrania; labrum with a notch about 

 J4 its • width, in depth, with the setae arranged as in 

 Sphinx, but the distance between the two setae vi is full half 

 the width of the labrum (in the Sphinginae it is mostly dis- 

 tinctly less than half) ; iii, iv and v about equally spaced on the 

 outer edge. Clypeus and mandible and antennae as in Sphinx, 

 but the adfrontals are somewhat wider. Body finely gran- 

 ulated, strongly tapering toward the head; first prolegs less 

 used than the others and slightly reduced. Subdorsals on 

 thorax, and obliques on abdomen marked by rows of raised 

 granules. No granules on the middorsal line, but they show a 

 tendency to arrange themselves in a row on each side of it. 

 Horn soft, not well distinguished from the body and about as 

 long as the height of the head, not down-curved. Supraanal an 



