A Revision of the genus Tarucus. 285 



other by a fine line ; a largish spot closes the cell, beyond which are 

 three pairs of spots, two oblique ones below the costa, two similarly 

 obUque between veins 3 and 5, and two below each other, shifted 

 inwards between veins 3 and la ; a spot shifted out close to the post- 

 median row between veins 5 and 6; the postmedian row of eight 

 internervular spots is strongly curved, beyond which is the sub- 

 terminal row of seven spots, the lowest anal one being in the sha])e 

 of a short dash, that and the two above have metallic blue scales 

 suparimposed. 



This is also a very distinct species easily separable from 

 any of the others. 



Genitalia : the clasps are broad and wedge-shaped, but do not 

 taper down to a point, the aj)ex being somewhat rounded ; the 

 tegumen is deej^ly excavated as usual, but has lobed cheeks or sides ; 

 the falces are of moderate length and strength, and rise from just 

 below the upper lobes. The aedoeagus is of moderate length and 

 width, reduced suddenly at the middle by the excision of the uj)per 

 half, the lower half tapering laterally to a fine point. The tectorius 

 is developed, but slightly. 



The androconia are of a long, oblong shape, with an asymmetrical 

 ovate base, the distal extremity being very evenly curved, with the 

 sides straight and long, the footstalk is given off from near the 

 centre, but not centrally ; there are seventeen rows of lamina, the 

 sculpturing being smallish but very distinct. 



Tarucus quadratus, Grant. Plates XIV, fig. 11 ; XVI, fig. 1 1. 



Tarucus guadratus, Grant, Bull. Liverpool Mus., ii, 

 p. 10 (1899). 



The blue of this species is very similar to that of T. 

 sybaris with a prominent black spot at the end of the cell 

 in the primaries. The miderside is similar in the strong 

 contrast of the black markings on a very white ground; 

 the pattern consists of spots, but by no means so isolated 

 as they are in sybaris. The inner wedge-shaped mark at 

 the base of the primaries is very large; the postmedian 

 line in both wings does not consist of isolated spots as in 

 sybaris, but rather of lunules intercepted by the veins ; 

 the subterminal rows of spots in both wings are composed 

 of isolated spots, but the subbasal and median series of 

 spots are by no means so isolated as in Hopffer's species. 



TRANS. ENT. SOC. LOND. 1917. — PARTS II, III, IV (MAY '18) U 



