PLEBEIIDI. 153 



superior lobe nearly as long as the claw, tapering, slender, but little curved, the 

 inferior nearly as long and slender, nearly equal, bluntly pointed, curving a little 

 inward, and strongly forward ; pulvillus wanting. Male abdominal appendages 

 with the lateral alations extended backward as parallel, tapering spines, slightly 

 bullate at base, the lateral arms excessively slender, long, and delicate, bent about 

 the. middle. Clasps of unusual breadth and uniformity, terminating in a very blunt 

 angle and a double point. 



Egg : Twice as broad as high, flattened, turban-shaped, the upper surface 

 almost perfectly flat, and extending far towards the strongly convex sides ; lower 

 surface scarcely arched ; sides covered with a tracery of subtriangular or triangular 

 cells with compressed, equal walls, considerably thickened but scarcely elevated at 

 the points of convergence of the lines of the triangles. Above, the cells are smaller 

 and more rounded (subcircular or oval), the walls thicker and lower, and entirely 

 uniform in height, with no such enlargements at the junction of lines. The 

 micropyle rosette is a sunken basin of entirely similar cells, but on a diminutive 

 scale, and forming only a delicate tracery. 



Caterpillar at Birth : Head generally wholly exserted, deeply cleft posteriorly 

 between hemispheres, a little angulate at its widest part ; frontal triangle very 

 large, considerably more than half as high as the head, and much higher than 

 broad. Body triangularly subcylindrical, the dorsal region narrowly depressed, 

 the first thoracic segment more arched, the last abdominal segment greatly flattened, 

 with a transversely oval, sunken, central, chitinous area. Legs rather long and 

 slender, with slender, curving, pointed claws. Whole surface of the body scabrous, 

 with minute stellate papillae. The following is the arrangement of papilla? and 

 annuli in which all the serial hairs are blunt tipped ; first thoracic segment with a 

 Btrongly arcuate series of eight or nine papillae, bearing forward-curving, spiculifer- 

 ous hairs ; on either side an oblique row of three similar papillae, and, enclosing 

 posteriorly in the arcuate embrace of the first mentioned, a number of larger and 

 smaller chitinous annuli in three short, transverse rows, the hindmost containing 

 also a pair of laterodorsal, hair-emitting papillae. Second thoracic segment with a 

 pair of laterodorsal, anteriorly placed, and bearing forward-curving, long hairs, a 

 similar lateral pair, and a single anterior infralateral circlet besides the appendages 

 to be mentioned. The eighth abdominal segment has a conspicuous, strongly 

 arcuate series of numerous papillae, the concavity forwards, the papillae irregularly 

 ranged, and each bearing a backward-sweeping hair. Common to many segments 

 are the following : a laterodorsal series of closely anterior, small annuli, from the 

 third thoracic to the seventh abdominal segments inclusive, high, central, latero- 

 dorsal papillae, with a very long hair, backward-sweeping and curving hair en the 

 second thoracic to the eighth abdominal segments, those on the thoracic segments 

 more widely separated than on the abdominal ; small papillae with comparatively 

 short, backward-directed, subrecumbent hairs just behind the preceding, on the 

 second thoracic to the sixth abdominal segments ; next, a lateral series of anterior 

 central, large annuli (becoming infralateral on the third thoracic, high supralateral 

 on the sixth to eighth abdominal, and very large on the sixth abdominal segments), 

 extending from second thoracic to the eighth abdominal segments ; an infralateral 

 series of smaller circlets on the first to seventh, but becoming larger and lateral on 

 the sixth to seventh abdominal segments ; a laterostigmatal series of minute annuli, 

 two to a segment, the anterior the lower, on the first six abdominal segments, found 

 also, but carried higher up, and the hinder greatly enlarged on the seventh 

 abdominal segment ; also on the second thoracic segment, but at same level, and 

 the anterior one only ; finally, a ventrostigmatal series of three high papillae, each 

 bearing a hair, placed in an oblique series ; the anterior lowest, and bearing a 

 comparatively short, straight, granulated hair, directed outward and a little forward; 

 the middle a larger, straight, granulated hair, directed outward ; and the posterior 

 the shortest, a gently curved, gently clubbed, smooth hair, directed backward and 

 outward.* 



" :;: " Scudder notes that his plate 71, fig. 4, is wrong in making the infralateral 

 and laterostigmatal lenticles into short, bristle-bearing papillae. In reference to 

 this note of Scudder's, it is true of argus (aegon) and argyrognomon and, in fact, of 

 all the Plebeii, as well as in Celastrinids and Everids, that those two short bristles 

 are short bristles as figured by Scudder, and not lenticles, so that it is extremely 

 improbable that they are lenticles in P. sendderii. They are certainly very difficult 

 to define accurately, being very minute and very transparent, and in any preserved 



