540 Mr. H. Diuce on 



fine silky yellow hair. The elytral costse are twice as nume- 

 rous as in Ehypnrus, a secondary series, less elevated, alter- 

 nating with tile primary series. M. Fairmaire's comparison 

 of the elytral sculpture with that of Syhax impressicoUis 

 seems to be due to a misconception, for that genus is very 

 different in every respect and has very broad and flat intervals 

 between the costse. There are no elytral pits or callosities in 

 Syhacodes, the head is relatively smaller tiian in Rhyparus, 

 the metasternum shorter, and the last abdominal segment 

 longer. M. Fairmaire has described the front tibiae as three- 

 toothed, but he has evidently mistaken the strong terminal 

 spine for the apical tooth. 



LXXI. — Descriptions of Seven new Species of Notodontidae 

 from Tropical South America. By HERBERT DruCE, 

 "F.L.S. &c. 



Hippia undulata, sp. n. 



Male. — Head, antennw, collar, tegulae, and thorax yellowish 

 brown ; thorax and abdomen brown ; anal tuft yellowish 

 ■white; legs yellowish brown. Primaries dark fawn-colour, 

 crossed from the costal margin to the inner margin by a 

 number of fine undulating bhackish-brown lines, some of 

 which are broken into small spots ; beyond the cell a rather 

 large brown spot : secondaries blackish brown, palest at the 

 base and along the inner margin ; the fringe fawn-colour. — 

 Female very similar to the male, but paler in colour and with 

 all the markings more distinct. 



Expanse, S I2J ? 1| i""^^^* 



Ilab. Colombia, 3Iinca, 2000 feet [H. 11. Smith, Mas. 

 Druce) . 



Bier a argenlata, sp. n. 



Male. — Head, antennse, and palpi black ; collar and tliorax 

 dark brown ; tegulte silvery grey ; abdomen pale greyish 

 brown ; the anal segments clothed with black hairs ; under- 

 side of thorax and abdomen yellowish brown ; the legs dark 

 brown. Primaries dark silvery brown ; a line crossing the 

 base of the wing and the discal spot yellowish brown ; two 

 narrow waved black lines cross the wing from the costal to 

 the inner margin, the first about the middle, the second 



