NYMPHALINAE: THE GENUS EUVANESSA. 389 



Abdomen short and stont, the upper organ of male appendages small, the hook much 

 longer than the body, ncarl}^ straight, swollen on its l)asal half, ecpial beyond; its in- 

 ferior arms as in Engonia. Clasps very l)road and short, much longer above than 

 below, with the upper basal process very broad at l)asc and taperiilg, much longer than 

 the clasp, directed much as in Engonia but not so elevated ; interior finger slender, 

 tapering, directed upward and backward, not nearly so long as in the preceding 

 genera. 



Egg. Broadest at base, narrowing slightly above, higher than broad, the summit 

 broad, distinctly marked, only slightly convex, the base broadly docked and externally 

 rounded. It is furnished with a few rather prominent, compressed, regular, equi- 

 distant, longitudinal ribs, commencing below the broadest part of the egg and increas- 

 ing a little in height, turning abruptly at the edge of the summit, Avhere they are 

 highest, and extending half way to its centre, terminating rather abruptly; surface 

 between the ribs slightly flattened, especially on the upper half, and broken into cells by 

 delicate raised crossed lines. Micropyle formed of nearly uniform, crowded, roundish 

 cells. 



Caterpillar at birth. Head smooth, well rounded, even, very slightly and angularly 

 prominent in the middle of the sides, where it is broadest, considerably broader than 

 high, with a few pretty long hairs. Body nearly uniform, tapering very slightly, 

 armed with longitudinal rows of very long, nearly straight, very delicate, tapering 

 hairs, seated on minute warts ; these are arranged on either side in a subdorsal (becom- 

 ing laterodorsal on the second thoracic segment, and absent from the first), one to a 

 segment placed scarcely in advance of the centre, a supralateral, one to a segment 

 placed behind the middle, a laterostigmatal, one to a segment placed in the middle, a 

 stigmatal, one to a segment placed on the posterior portion, and an infrastigmatal row, 

 one wart to each segment placed on its anterior portion. Legs pretty long and not 

 very stout, tapering, the claw with a large, tapering, basal, interior process, itself 

 moderately long, tapering, very strongly bent and slightly curved. Hooks of the 

 anterior prolegs seven in number, tapering, and very strongly curved. 



Mature caterpillar. Head not very large, subquadrate on a front view, the sides 

 being very broadly rounded, almost flat, the summit hollowed a little at the middle 

 suture, the apices of each half a little tumid; a little full about the o cellar field, 

 broadly appressed in front, the triangle scarcely sunken, the head hardly deeper below 

 tlian above, covered all over, but especially on the tumid summits and the hinder por- 

 tions, with a large number of short, stout, conical, blunt tubercles, and more frequent 

 minute ones, the latter emitting each a short hair; triangle more than half as high 

 again as broad, the sides slightly curved, scarcely extending more than half way to 

 the summit. Antennae with the basal joint scarcely exserted, the second half as long 

 as broad, stout, the third half the diameter of the second, fully thrice as long as 

 broad, the fourth very small. Ocelli six in number, five arranged in a moderately 

 broad curve, its convexity forward, the middle three at equal and very slight distances 

 from each other, the first removed from the second, and the fifth from the fourth by 

 their own diameter ; the sixth is situated at a little distance behind at equal distances 

 from the first and fourth, with Avhich it forms a right angle; all equal in diameter, 

 the second to the fifth very protuberant. Lal)rum very small, deeply excised in the 

 middle. Mandibles moderately large, stout, angulated, the edge straight, entire, 

 above with some scarcely impressed lines. Maxillary palpi exceedingly small, not 

 at all exerted. Spinneret small, conical, tapering. 



Body cylindrical, nearly equal on the abdominal segments, the thoracic segments 

 tapering somewhat forwards, armed with quite long, stout spines, each one tapering 

 regularly to a fine point, and bearing a few minute, short, needle-like thorns, scarcely 

 visible to the naked eye, and often, generally aljove the middle, one, two, or three little 

 short spinules, tipped Avith a short thorn ; these spines are arranged in longitudinal rows, 

 one to a segment in each row as follows : a dorsal scries, placed anteriorly on the third 

 to the eighth abdominal segments; a laterodorsal series, placed a little in advance of 

 the centre of the first to the eig'ith ab lominal segments; a supralateral series, placed 



