iiiisi'EKini : Till-: (;i;nus ei'augyrkus. 1395 



that oil tlie fore legs; second joint alKnit two-tlftUs the len'j:th of the first. Claws 

 small, slciuler, delicately tapering to a line point, arcuate and Ijent at about ri2;ht 

 angles ill tlie middle; pad as in Endamus; paronycliiii compressed, conical, straight, 

 minute. 



Abdomen with the second segment twice as long as the first and half as long again as 

 the third, beyond decreasing regularly in length; the eiglitli segment of the male is 

 longer at the sides tliau the seventh, but strongly and roundly excised in the middle 

 above. The centrum of tlie upper oriiaii of the male appendages is a little compressed, 

 tumid, regularly arclied ; hooks slondcr, about half as long .as tlie ceutrum, iiidepondent, 

 nearly parallel and liorizontal, meeting at their l)lunt tips the extremity of the independent 

 lateral arms, wliieh are nearly straight, similar to the hooks l)nt longer; clasps large, 

 scarcely at all convex, tapering strongly to an upturned point, the upper edge furnished 

 a little beyond the base witli an upturned, slender, prominent lobe. 



Egg. Subglobular, slighty broader thau high, well rounded, broadest in the middle of 

 the lower three-fifths, the upper part regularly domed ; furnished with a considerable 

 number of distinct but slight and equal vertical ribs, half of them extending from the 

 base to the micropyle, the others just failnig to reach it. They are cut and the inter- 

 spaces traversed by exceedingly flue and close cross lines, forrainsr with the vertical 

 ribs quatlraiignlar cells. Micropyle small. 



Caterpillar at birth. Head large, siibglobose, twice as high as deep, well rouuded, 

 each hemisphere with a slight independent arcuation above. Body nearly uniform, the 

 first thoracic segment largest; the dorsal shield inconspicuous. Several longitudinal 

 series of club-shaped bristles, one-tenth as high as the breadth of the body, arranged 

 in longitudinal rows as follows : a laterodorsal anterior row on the thoracic segments ; 

 a supralateral anterior row ou the abdominal segments; and ou all the segments a post- 

 central lateral row, an anterior suprastigmatal row, and a substigmatal series, the last 

 with one in advance of the middle on all the segments, and also one behind the middle 

 on the abdominal segments. 



Mature caterpillar. Head subglobular, the sides moderately and regularly arc- 

 uate, the lower curve of the head slightly less arcuate, each hemisphere with 

 a slight independent arcuation of its own above ; the suture between rather deeply 

 iiupres-sed; the inner frontal triangle half as high again as broad, reaching barely to 

 the centre of the head; head of equal height and breadth, half as high again as its 

 greatest depth, which is below; the front I'ecediug rapidly above as seen on a side 

 view ; collar narrow, of the width of the head ; the surface of the head is covered with 

 a reticulation of granular tubercles which are less conspicuous ou the front than else- 

 where; the frontal triangle with a distinct median carina and the lower portion of the 

 front witli wavy striae converging toward the mouth parts ; ocelli six in number, 

 four arranged in a regularly arcuate row, the convexity forward, equidistant or the 

 two upper slightly approximated, the fifth behind the third and as far from it as the 

 latter is from the first counting from above, the lines uniting these three forming a 

 right angle; the sixth situated at the outer base of the antennae in continuatioa of 

 the arcuate row. 



Dorsal shield of the first tlioracic segment not very conspicuous, well arched 

 longitudinally, but tapering forward, occupying the posterior half of the segment 

 and reaching on either side nearly to the spiracles ; posteriorly ridged, and on either 

 side next its lower extremity dimpled. Body elongate, tumid, of nearly equal size 

 ou the first six abdominal segments, in front and behind wliich it tapers toward either 

 extremity, in front perhaps more rapidly than behind ; the last segment well rouuded 

 with a not greatly expanded anal fiap. Abdominal segments divided into a large anterior 

 section equal to about a third of the whole and four subequal posterior sections each 

 of which shows a tendency to subdivide again, being thickened anteriorly and poste- 

 riorly. Thesurfaceiscovered with very scattered, minute, conical papillae, higher thau 

 broad, each supporting a very short, straight, tapering, apically open, hyaline bristle; 

 there is also a laterodorsal series of craterlforra annnli in the middle of the broad 

 anterior section of all the segments, on the tlioracic, however, occurring in the 



