( 174 ) 

 XLIV. PROTAMBULYX gen. nov.— Tyiuis : strigiUs. 



fiphnix Linne (//-« id., 17,58), Mant. Plant, p. 538 (1771). 



Phulus Hubner, Verz. bek. Srhni. p. 134 (182'2) (partim ; type: urhemo/i). 



Spliiii.r (Anibiili/.r), Westwooii, Cab. Or. Eiil. p. 61 (1848) {imm. nud.) 



Ambiili/x Walker, LIxl Leji. lux. B. .V. viii. p. 121) (185G) (partim ; Lincl. type of Ampli/jiterus. 



d ? . Tongue reaching to middle of abdomen or beyond, longer in i than in ? . 

 Piliftr long ; genal process triangular, as high as the pilifer. Frons and terminal 

 surface of palpi almost on a level, ventral angle of second segment somewhat 

 rounded, terminal surface smaller than in Amjdijpterus. A high transverse crest 

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

 to mm. ( ? ) shorter than R^ of forewing ; end-segment (PI. LX. f 4) very 

 long and thin, the thicker basal portion densely scaled dorsally, ciliate ventraljy, 

 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 ventraljy 

 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 steruites ; tergites with numerous 

 sjiines at the edges. Clasper and eighth tergite with friction-scales, eighth sternite 

 mesially lobed ; no distinct lateral tuft to eighth segment. Tibiae not sjiinose, 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 hindcihia less than 

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

 the latter with two i)airs of lobes. Distal margin of forewing excised between 

 SC and St'', the lobe SC'^ mostly little produced, 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 Amph/pterus. 



The interantennal crest is olive or tawny in front, ranch paler behind. The 

 dark band of the thora.x does not e.xtend to the lateral edge of the mesothoracic 

 tegula, the lateral fringe of the tegnla 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 coucolorous with the other segments, or darker. Tibiae without 

 basal spot. 



IJab. Tropical and Subtropical America, from Southern Braiiil to Mexico; 

 Bahamas ; West Indian Islands : Cuba, Haiti, Jamaica, Porto Rico, St. Vincent. 



Eight species. 



Key to the species : 



a. No submarginal line on forewing . . .142. 1'. carteri. 

 Submarginal line on forewing distinct . . . . b. 



b. Forewing above without conspicuous rounded 



stigma . . c. 



Korewing above with conspicuous rounded 



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



c. Forewing above with broad obliqne subbasal 



band from inner margin to (SM') . . 139. P. astggonus. 

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



