LYt'AKMNAK: ( VAMltIS rsKlDAlU iH )LUS. 935 



hIiiiIIiiw pit wlui-li Is Blioiit .01 mill, in iliuiiictor; tlio iiidiviiliial icll-, <if tlic iiii<T(i|>ylc 

 arc iiMimlly inoro iiniroriii mul more clrciiliir tlinii shown in llio llgiirc anil are about 

 .(MM! mm. In illniiu'ter. while the sMrronn(llii<j: cells of the genenil snrface are .014 mm. 

 In diameter. Color of cirg rather pale green, the elevated portions white. Height, 

 3 mill. : lireailth. ..'it'i mm. 



Caterpillar, l-'inil atiKjr. Head dark, shiiiiiitr. cliesliiiit In-own. ocellar Held black. 

 Body very pale bluish wliite, nniforinly, very miiintely, and ipiite densely piiiu'tiilated 

 with brown spots ; llrst tlioraele seiiment with a dorsal shield of the color of the body, 

 the papillae upon it blaelvish ; the larger papillae of the body are of the body color, 

 annulate with l)lacklsli, the smaller ones arc brownish. 'I'lic hairs have an annulate 

 appearance due to the presence of excessively minute, regularly distributed, raised 

 points as if for the support of liairs. Lengtii, 1.1 mm.; breadth anteriorly, .3 mm.; 

 posteriorly, .24 mm. ; length of dorsal hairs, .047 mm. 



Secimil utatje. Brownish yellow or in summer greenish wliitr. occasionally reddish. 

 Length about 2 mm. (.\fter Kdwards). 



Tliiril stiiije. In spring, pale green, whitish dorsally, usually with a mediodorsal, 

 often interrupted reddish stripe from the second thoracic to the sixth abdominal seg- 

 ments: in summer variable, bull' or pale green, immaculate, the tirst thoracic segment 

 brown, in some dorsally and laterally mottled with dark green and brown; occasion- 

 ally vinous throughout or red with a wliite substigraatal stripe; in autumn dull green, 

 more or less marked with brown. Length about 3.5 mm. (After Edwards). 



Fourth stage. Color variable as before. Length about 5 mm. (After Edwards). 



Liist staye (75 : 29. :59, 40, 4,5). Head (79 ; 2.s) dark castaneous, broadly edged above 

 and below with blackish ; triangle tinged with blackish and edged distinctly with black ; 

 antennae pale ; ocelli white in a black Held ; moutli parts reddish above, whitish below, 

 the edge of the mandibles black. 



Boily almost white with a very pale roseate tinge; a narrow, faint, dusky, dorsal line 

 from the second thoracic to the sixth abdominal segments: on either side of the first 

 abdominal segment a laterodorsal triangular greenish patcli having its base on the 

 anterior edge of the segment; on the sides a series of very faint, greenish, obliiiue 

 stripes, one to a segment ; beneath, very pale greenish; wartlets white excepting on 

 the laterodorsal patch of the first abdominal segment where they arc black; hairs 

 short, backward curved, white; spiracles white. Legs very pale yellowish; claws 

 fuscous : prolegs very pale greenish. Length, 10.5 mm. : breadth, 3.25 mm. ; length of 

 long hairs, .24 mm. ; of short ones, .05-.0r. mm. 



Chrysalis (84 ; .'it!, 43, 44). Upper surface light brownish yellow witli a very faint 

 yellowish fuscous dorsal line; prothorax infuscated and marked with blackish in the 

 middle and at the sides. Mesothorax and first abdominal segment blackish at the 

 dorsal line and with a small blackish fuscous spot nest the wings; basal -wing tubercle 

 tipped with fuscous; third to the sixth abdominal segments with a transverse, blackish 

 fuscous, lateral streak, increasing in size posteriorly; posterior segments a little infus- 

 cated. Under surface luteous, sparsely and faintly sprinkled with fnscous dots 

 arranged in longitudinal rows. Tiie raised lines which cover tlie body are dark brown- 

 ish yellow: warts at base of hairs brownish, tlie hairs sometimes pale sometimes 

 f nscoHS. a little longer on the front of prothorax than on the body generally. Spiracles 

 ■white, bordered with luteous. Length, 7 mm. ; height at thorax, 2.G5 mm. ; width at 

 same, 2.25 ram,; height between thorax and .abdomen, 2.5 mm.; width, 2.75 mm.; 

 height of abdomen, 4.15 mm. ; width of same, 3.35 mm. ; length of longer hairs, .19 

 mm. ; of shorter hairs, .12-.14 mm. 



Nomenclature. In the synonymy no attempt has here been made to 

 consider the Californian forms, but only those in eastern America. These, 

 it woidd seem, can fairly be reduced to three, there being scarcely any 

 difference even in tiie south between those formerly considered as species, 

 under the names neglecta and pseudargiolus, excepting in size and in the 



