( 359 ) 



spot. Sides grey ; on each segment a large white spot edged with black. These 

 spots are verj' irregular in shape, and on segments to 10 form a large anterior 

 and a smaller posterior spot, or divide into three or four small spots. The first 

 segment has at its anterior edge a small black subdorsal spot, and on eitlier side a 

 black line which extends to and joins the black edging of the white lateral patch ; 

 sometimes this segment is sirajjly bordered anteriorly with black. Eacli segment 

 has posteriorly four ringlets, which give the bands au irregular appearance. Horn 

 filiform, 25 to 30 mm. long, black with two white rings, one at base and the other 

 near tip ; this liorn, owing to its thinness and length, sometimes curls u]) at the 

 end like a corkscrew. 



" Underneath the colour is pale brown, almost white in some instances, having 

 on each segment a few black marks. The anal segment is pale grey, partly edged 

 with brown ; two slight excrescences on lappets. Prolegs yellowish, with two 

 black spots exteriorly ; abdominal legs grey, with a broad black stripe at the base. 



" The larva forms a coarse cocoon on surface of ground, and changes to pupa 

 in from 10 to 14 days. Pupa about 00 mm. long, rather slight, and bearing a strong 

 resemblance to the pupae of Erinnijis, bnt is lighter in colour, with the dashes of 

 dark brown more conspicuous. Tiie wing-cases especially are similar, but the 

 markings on thorax and head are fewer in number, the pupa resembling in this 

 respect more that of Psrudosphinx tetrio, which has also the same shape. — Food- 

 plant : I'lumeriu." 



Hah. Central America : Mexico to Panama, probably fartlier south on the 

 western side of South America. 



In the Tring Museum 14 cJc?, 11 ? ? from: Vera Ouz, Mexico; Yncatan ; 

 Rosery Mines, Spanish Honduras ; Costa Rica. 



c. I. rimosa papai/ae. 



Avceryx sci/ron, Walker (iioii Cramer, 1780). I.e. viii. p. 225. d. 5 (18,'ifl) (partim ; Venezuela). 



(?) Aiicery.r xileiius, Grote & Rob., Trans. Ainer. Ent. Sue. ii. p. 77 (1808) («»/;i. niul.). 



*A)urr!/x jxijMiyae Boisduval, Spec. Gen. Leji. Het. i. p. 126. n. 10 (1876) (Cayenne ; — coll. Charles 



Oberthiir). 

 *I>tin/uath'i!< laura Butler, Trana. Zool. Soe. Loud. ix. p. GOl. n. 2 (1877) (Venezuela ; — Mus. Brit.); 



Kirby, Cat. Lep. /let. i. p. C98. n. 1 (1892). 

 Jxiu/tiulfiKK jiapayae, Butler, I.e. p. O^iO (1877) ; Kirby, I.e. n. 14 (1892) ; Schaus, Ent. News ix 



p. ll-JU (1898) (= lam-a). 

 P}<eiiili,nphiiix seyriiii, Burmeister (non Cramer, 1780), Deser. Rep. Arijeiit. v. p. 327. n. 2 (1878) 



(partim). 



S ? . On the whole much smaller than the West Indian and Central American 



races. Forewing very strongly marked in brown and white in both sexes. 



Hindwing below with second discal line very prominent at costal margin (first 

 line generally absent) ; border of hindwing above a little narrower tlian in iiiclitus. 



Huh. Venezuela ; Guiana ; jirobably occurring farther south. 



Ill the Tring Museum 14 SS, 11 ?? fmni : Jlerida, Aroa, and Caripa, 

 Venezuela. 



290. Isognathus excelsior. 



*Anerryj- r.xeelninr Boisduval, Spec. (jin. Lep. Hit. i. p. 127. n. 12 (187fj) (hab. ? ; — coll. Charles 



Obertbllr). 

 litijynutliuH ej-celgior, Butler, TranK. Zoal. Hoc. Lmid. ix. p. (J30 (1877) ; Kirby, Cat. Lrjj. Het. i. 



p 698. n. 11) (1892). 



cJ ? . Hcsemhling I. rimotsa inclitutiAivA distiiignislud from this and all other 



