LIBYTHEINAE: HYPATUS BACHMANII. 7fj3 



pyle rosette. The interspaces and the ribs tlieniselves are crossed by numerous hori- 

 zontal raised lines, thus forming transverse rectangular pits between, about three 

 times or more as broad as high. At the base of the egg the ribs and cross bars, here 

 of equal prominence, become broken up into an irregular mesh like the cap of a 

 thimble. At the summit, the circle within the termination of the ribs is .08 mm. in 

 diameter; the quadrangular cells, which here are only twice as broad as high, become, 

 within the circle, rounded polygonal cells, Avith a diameter of .017 mm. The micro- 

 pyle rosette is therefore made up of a very few rather large cells, the -walls of which 

 toward the centre become nearly oljliterated. Color very pale green. Height of eg, 

 .7 mm. ; breadth, .45 mm. ; greatest elevation of ribs, .0.5 mm. ; height of rectangular 

 cells, .017 mm. ; greatest distance apart of vertical ril)s, .00.5 mm. Funn specimens 

 received from Mr. Edwards. 



Caterpillar. First stage. " Cylindrical, the segments a little rounded, and four 

 times creased transversely, covered with a fine short down [' witli fine hairs'] ; color 

 green, semitransluceut [' greenish brown translucent']. Head twice as broad as [first 

 thoracic segment], obovoid, a little depressed at [median] suture, tlio vertices 

 rounded, sparsely pilose, color yelloAV brown" (Edwards). Length, 1-1. .5 mm. 



Second stage. "Color brownish green, the segments curved. Head a little broader 

 than [the segment behind it], shape as before, color yellow green" (Edwards). 

 Length, 2-2.25 mm. 



TJm-d stage. "Same shape; upper side dark green: a faint shade of yellow over 

 and along basal ridge, rather macular; under side, legs and feet lighter green; the 

 segments much specked with faint Avhite on the ridges caused by the creases ; on 

 [middle thoracic segment], high up, a black dot on either side. Head as before, color 

 light green" (Edwards). Length, 3 mm. 



Fourth stage. "Color dull green, yellowish along and over basal ridge, specked with 

 pale white or yellow white as before, the black dots as before. Head green" (Ed- 

 wards). Length, G.5-7 mm. 



Fifth stage (75 : 19). "Cylindrical, thickened at [the last two thoracic segments], the 

 dorsum of last [abdominal] segment abruptly curved down to the end ; color dark green, 

 the lower side, and also feet and legs, pale green; each segment four times creased 

 transversely, and on the fiat ridges so caused are rows, one to each, of small, tubercular, 

 flattened points, pale or whitish yellow; [on all the segments of the body] a white 

 stripe along base, just over the spiracles, and above this the ground is yellowish for a 

 little way ; a mediodorsal yellow line and sometimes a fine line on middle of side ; yel- 

 low, tuberculated points over the legs, in arcs from [middle thoracic to second abdomi- 

 nal segment]; on foremost ridge of [middle thoracic segment], high on the side, a 

 dead black tubercle, a little raised and rounded, in yellow ring; spiracles in brown 

 ovals ; surface covered with a fine short down. Head obovoid, green, smooth, sparsely 

 pilose; the ocelli brown" (Edwards). Length, 18-2.3 mm. 



"Occasionally the larvae in later stages are dift'erently colored. One had the dorsum 

 dark green, edged on either side by a gray line, and successively by a band of yellow, 

 a gray line and a black band ; the [middle thoracic] segment was wholly, and [the first 

 abdominal] partly black. Two others of same brood were green, and black patches 

 on" middle thoracic and seventh abdominal segments (Edwards). 



Chrysalis (84 : 23, 24). "Helmet shaped, compressed, the abdomen someAvhat cari- 

 nated [dorsally] ; mesonotum high, rounded, sloping abruptly to top of head-case, much 

 compressed and sharply carinated, followed by a deep excavation [between thorax and 

 abdomen] ; head-case not prominent, squai-e or nearly so at top, a little excavated, the 

 corners subpyramidal and scarcely at all produced ; along carina of abdomen a yellow 

 line, wliich forks and passes round mesonotum to top of head-case; a slight, yellow, 

 lateral line on abdomen. Color gi-een, either deep or with a l)lue or a yellow tint; the 

 abdomen much sprinkled with i)ale yelloAV flat points or small spots, a fcAV of these 

 about the head-case" (Edwards). Length, 12.7 mm. 



I have examined in Boisdinal's collection the butterfly figured in Boisdu- 



