( 3-^4 ) 



(1*1. LUl. 1'. 7) of the saiue tyjio iis in Madori/x, the apical edge dentate at the 

 left and right side as shown in figure. 



?. Eighth tergite sinuate; inembrauaceous mesiaily. Vaginal plate pitchy 

 black, large, connecting membrane between vaginal plate and seventh sternite 

 long, transversely folded ; vaginal jilate very uneven, a ridge or carina ])roximallv 

 of the ovate orifice, curving distad laterally, limiting a broad lateral groove ; two 

 smaller grooves behind the orifice, separated by a carinated fold. Seventh sternite 

 longer than basally broad. 



llal). Trojiical and Subtropical America : Florida, West Indies, southward to 

 Paraguay and Southern Brazil. 



Very common. 



In the Tring Museum ~ larvae, 1 jjupa, 'Z^W odd specimens from : Jamaica ; 

 Haiti ; Culia ; Me.\ico southwards to Bolivia and Rio de Janeiro. 



LXXXIX. ISOGNATHUS.— Typus: sa/ron. 



Sphinx Linne, .l/«s. Lml. Uh: p. 350 (1764) (partim). 

 Kniini/is Hiibner, V,tz. hfk. Schiii. p. 1.39 (1822) (partim ; type : cIlo). 

 Dilii/ilHiiinlii Burmeister, Sjiliin;/. linix. p. 08 (1850) (partim ; type: ello). 

 Aiiccnj.c Walker, Li.il Lcj). Ins. B. .]f. viii. p. 222 (I85ii) (partim ; type : ji/iiaslri). 

 IsngiuUhus Felder, Wien. Ent. Monatschr. vi. p. 187 (1802) (type : scijron). 

 Tatof/losstiDi Butler, Trans. Zool. Sac. Land. i.x. p. 598 (1877) (type : caricue). 



c??. Agreeing closely with P.^ii-iidosphiiix and Erinin/is\ robust; crest of 

 thorax small ; crest of occiput not divided ; second abdominal tergite tufted above 

 (in well i)reserved individuals), seventh tergite and sternite of ? shorter than 

 basally broad ; process of tenth sternite of c? a little shorter than the tergite ; harjie 

 transversely ribbed (PI. XLV. f. ^o) ; W and M^ of hindwing less close together 

 than in Erinni/is. 



Cater})illar as in J'.seMf/o.yj/ii//x ; body yellow or white, marked with various 

 designs in black, sometimes appearing black with pale rings ; horn long and thin, 

 rough with setiferons tubercles, which are dense distally (in all species ?) ; anal 

 tergite without the two high tubercles of Pseadosjiliiiix. — Food-plants : Plumeria 

 and other Eiij/liorbiaceae. 



Pupa stouter than in Krinni/is, paler, the black streaks more conspicuous 

 (Burmeister's figure correct? ; his '^ sci/ron'" pupa is darker in colour than tiie two 

 7ir//;«///s-i>upae figured on the same plate). 



Uab. Tropical and Subtropical America, from Mexico to Buenos Aires ; Cuba, 

 Haiti, Porto Rico. 



The sexual armature does not present any apparent difi'erences in the various 

 species, which are partly difficult to distinguish. 



Key to the species : 



a. Veins of hindwing above strii)ed with black 



in outer half . . . . . . 2'Jl. 7. caricae. 



Veins of hindwing above not striped with 



black in outer half. . . . . . b. 



b. Ab<lomen not distinctly banded . . . . c. 

 Abdomen with black and whitish grey bands . d. 



c. Sjiot in apex of cell of forewing and dot 



ontside D' distinctly separate . . . 284. /. leachi. 



