( 174 ) 



XLIV. rUOTAMBULYX gen. nov.— Tyjuis : striyiUs. 



S/iliiiix Linnt^ (non id., 1758), Mant. Plant, p. 538 (1771). 



I'lwlun Hiibner, Vcrz. bek. Sriim. p. 1.34 (182'2) (partim ; type: achcinun). 



Sphiiu (Aiiibi(h/x), Westwood, Cab. Or. Ent. p. 61 (1848) (ho/k. iwd.) 



Ambithjx Walker, IJxt Lcji. lux. B. M. viii. p. 121) (185fi) (partim ; Lincl. type of Ainjili/pknix. 



(? ? . Tongue reacliing to middle of abdomen or Ijeyoud, longer in d than in ? . 

 Pilifer long ; genal process triaugnlar, as bigb as the pilifer. Frous and terminal 

 surface! of jialpi almost on a level, ventral angle of second segment somewbat 

 rounded, terminal surface smaller than in Amplyjjtcru.'i. A bigb transverse crest 

 between antennae, almost vertical in front, slanting behind. Antenna 3 mm. (cJ) 

 to 5 mm. (?) shorter than R'* of forewing ; end-segment (PI. LX. f 4) verj- 

 lofig and thin, the thicker basal portion densely scaled dorsally, ciliate ventrally, 

 the rest of the segment beset all round with single long scales which are more or 

 less erect, giving the segment a peculiar appearance ; the segment bears ventrally 

 two or three bristles, but none at the end; <S : compressed, not deeply grooved 

 ventral surface of segments rather broad, fasciculated ciliae of distal row not long, 

 the series reaching barely halfway down the segment, distal segments not grooved, 

 almost cylindrical ; ? : proximal series of prolonged ciliae vestigial. Abdomen 

 with weak spines at the edges of the distal sternites ; tergites with numerous 

 spines at the edges. C'lasper and eighth tergite with friction-scales, eighth sternite 

 mesially lobed ; no distinct lateral tuft to eighth segment. Tibiae not spinose, as long 

 as the respective first tarsal segments ; spurs very unequal, short ones about one-third 

 or one-half the length of the long ones, longer apical one of hindiibia less than 

 one-half the length of the first tarsal segment ; pulvillus and paronychium present, 

 the latter with two pairs of lobes. Distal margin of forewing excised between 

 SC^ and iSC', the lobe SO' mostly little i)roduced, less prominent than lobe SC.'^ ; 

 R- of hindwing far below centre of cell, D' as long as, or shorter than, D^. 



Larva and chrysalis probably essentially as in Amplypterus. 



The interanteunal crest is olive or tawny in front, much paler behind. The 

 dark baud of the thorax does not extend to the lateral edge of the mesothoracic 

 tegula, the lateral fringe of the tegula remaining pale. The abdomen has a more or 

 less continuous dorsal line, and oblique dorso-lateral stripes arranged as in the 

 caterpillar ; the sternites bear very thin obliquely placed lines and a mesial line ; 

 the first tergite is concolorous with the other segments, or darker. Tibiae without 

 basal spot. 



Hub. Tropical and Subtropical America, from Southern Brazil to Mexico; 

 Bahamas ; V\' est Indian Islands : Cuba, Haiti, Jamaica, Porto Rico, St. Vincent. 



Eight species. 



Key to the species : 



a. No submarginal line on forewing . . . 142. P. carteri. 

 Submarginal line on forewing distinct . . . . b. 



b. Forewing above without consiiicuous rounded 



stigma . . ...... c. 



Forewing above with conspicuous rounded 



stigma ......... e. 



c. Forewing above with broad obli(jue snbbasal 



band from inner margin to (SM') . . 13VJ. P. astygouus. 

 The band absent or represented by a small spot . . d. 



