( 353 ) 



Isoffiiathtfi are i/iti'r .sf more closely related than with the easily recognised tftrio, as 

 is shown by the crest of the head and thurax, the ohmr, iiii 1 the sexual armature 

 ditfering somewhat in Isoi/nxtliKu and I'.scm/osplnn.r. 



The yellow-ringed larva with red head, red anal segment, and red legs 

 resembles that of certain Satuniiidae. This similarity is the more suggestive as 

 the oblique side-bands of the equally low-organised Vachijlia and 7V<o^«.s— whii^h 

 run in the opposite direction to tiiat of the bands of Protoparce, Ili/lolcm, Splniix, 

 etc. — are also met with among American Sutii-niiidae. 



283. Pseudosphinx tetrio. 



Merian, Metnm. Siiriii. /ns. t. 5 (eriica) ( 170.')). 



Sjihrnr letrin Linne, .Vmil. I'luiit. p. fiSS (1771) (Am. mer.) ; Mull., Natiu-x., Siijijil. p. 301. n. ."). b 

 (1774) ; Fal)r., %s^ Eiil. p. .")40. n. 14 (1775) (partim) ; Goezc, Eiit. Bnjtr. iii. 2. p. 20:!. n. 2 

 (17K0) ; Fabr., Nyycc. /««. ii. p. 145. d. 27 (1781) (partial) ; iii., M,wl. Im. ii. p. 96. n. .30 (1787) 

 (partim) ; Gmel., .S//.sV. Nat. i. 5. p. 2375. n. 61 (17!»0) ; Fabr., ICiit. SysL iii. 1. p. 360. n. 32 

 (17'.I3) (partim) ; Burm., Abli. Nat. C'cs. J/allr p. 60 (1854) ( = liasdruha!) ; Dew., iu Wiegm., 

 AirJi. Natunj. xliv. 1. p. 9. t. 1. f. 10. 11 (1878) (larva). 



Sphinx pluitiieriae Fabriciu.«, l.l.c.c. 



SphiiLT hiKdriihil Cramer, Paji. ICnil. iii. p. 90. t. 246. f. V (1779) (Suriaam ; Ourai,Mo). 



Hyloicus hasdruha], Hilbner, Verz. bek. Sclim. p. 139. n. 1488 (182:i). 



Sphinx aiidnihal (!), Poey, Cent. Lrp. i. 11 (1832) (Cuba ; larva, pupa) ; id., .Mini. Hist. Nat. Cuba 

 i. p. 197. n. 10(18511 (larva). 



Sphinx ru-itica, Sepp {lum Fabrioins, 1775), Stiriii. Vlind. iii. t. 101 (1852). 



P)i€iuIotiphinx tftrio. linrmeister, S/diiittj. Bras. p. 64 (1856) ; Grote, Pror, Ent. Snc. Philad. v. p. 64 

 (1866) ; id. & Rob., ibid. p. 161. n. 75 (1865) ; Walk., List Lep. Ins. B. M. xxxv. p. 1854 (1866) 

 (= ha.idruhal) ; Bull., Trans. Z.«,t. Sw: Lund. ix. p. 610. n. 1 (1877) ; Dew., Milth. .Miiiu-h. 

 Ent. Ver. i. p. 92 (1K77) (Porto Rico) ; Burm., Dcsci: lirp. Argnd. v. p. 326. n. 1 (1878) ; id.. 

 I.e. Atlas p. 33. 34. t. 13. f. 3 (/.). 7 (p.) (1879) ; Druce, in Biul. Cent,: Anier., Li-p. Hel. i. 

 p. 22. n. 1 (1881) ; Gundl, CmUr. Ent. Cabana p. 203 (1882) ; Edw., Canad. Ent. xx. p. 12 



(1887) (Arizona ; N.W. Texa.s) ; id., Ent. Amer. iii. p. llU (1887) (Florida) ; id., I.e. iii. p. 223 



(1888) ; Riley, /«.■.■. Life ii. p. 379 (1890) (at sea in Gulf of Mexico) ; Kirby, Cat. Lep. Ilet. i. 

 p. 082. n. 1 (1892) ; Rothsch., Nov. Zooi,. i. p. 90 (1894) {=obscura) ; Druce, /.-■. SuppL p. 316 

 (1896) ; Bonningh., JHs xii. p. 117. d. 22 (1899); Hanips., Ann. Mag. N. IJ. (7). vii. p. 251 

 (1901) (Bahamas) ; Kaye, Trans. Ent. Sor. Land. p. 139 (1901) (Trinidad). 



Mamsibi hasdrnhal. Walker, List Lep. Ins. B. M. viii. p. 202. n. 6 (1S56) ; Menetr., Eiiuin. Corp. 



Anini. Mus. Pdr. ii. p. 89. n. 1408 (1857) ; Clem., Jaiirn. Ac. N. Sc. Phil<al. iv. p. 161. a. 53 



(1859) ; id., in Morris, Si/n. Lrp. N. Am. p. 184. n. 2 (1862). 

 Sphinx? telria, Walker, I.e. p. 263 (1856). 

 Mncrosila asdnibal {'.), Lucas, in Sagra, Hisf. Cuba vii. p. 295 (1856); Herr.-Sch., Carresp. Bl. 



p. 59 (1865); Boisd., C'(»;67V/. Lqi. Unidniada. p. 72 (1870); Weism., ed. Meld., N(«f/. Thear. 



Desr. i. p. 264 (1882). 

 Mai-rnsda tetrio. Boisd. S/ier. (Jen. Lep. /let. i. p. 61 (1875) ; Muschl., Verh.Zool. Hot. Ges. Wien xxvi. 



p. .345 (1876) (Surinam) ; Snell., Tijdsrhr. Ent. xxx. p. 33 (1887) (Curavao). 

 *Psemlosphinx obseura Butler, i.r. d. 2 (1877) (Honduras; N. Granada; Brazil; Mus. Brit.); 



Kirby, /.(■. n. 2 (1892). 

 Protoparee tetrio, Butler, Pror. Xool. Soc. Land. p. 484. r. 64 (1878) (Jamaica). 

 Sphin.r, [Psendosphin.r) tetrio, Dewitz, Nora Act. Leap. Car. Ac. Nat. xliv. 2. p. 250. t. 1. f. 2. 2a 



(/. juv.) (1882). 



cj?. The S is darker than the ? ; both sexes are individually variable in 

 colour and size. Sutler's obsmira is based on specimens with an average amount of 

 black-brown on tlie wings ; tliere occur individuals which are mucii darker than 

 tiie type of ubscara. 



S. Tenth segment, broad (I'l. XLI. 1'. 11). 2it. •>{}, sternite and tergite clcse 

 together, th(! processes of the former acute, curved at end. ('Jasper with a great 

 number of friction-scales (PI. LVlll. f. lid) ; harpe ending in a long, obtuse, 

 somewhat spatulate process witii entire edges fl'l. XLV. f. ID). Peuis-sheath 



AA 



