280 Mr. G. T. Bethunc-Baker on 



resolves itself into spots and luiuiles and is less fine than 

 in the type. 



I sec no reason to doubt the correctness of the general idcntilica- 

 tions of this insect ; the genitalia arc distinct from other species, 

 they are small, the clasjis are broad, rounded on the upjier edge 

 and slightly dentate, the lower apex being ])roduced forward some- 

 what and is very slightly dentate; the horny sclerites are tine 

 and curved ; the tegumen is similar to the usual pattern, but the 

 falces are very short and angled sharply at the rear; the aedoeagus 

 is fine and waved with the pointed apex generally obtaining 

 in the genus. The tectoriiis is very simjile and of moderate 

 dimensions. 



The androconia are oblong, subovate proximally, and slightly 

 curved distally; there are twelve rows of lamina, the sculpturing 

 of which is rather small and well separated ; the foot-stalk is given 

 oft' rather out of the centre. 



Tarucus alteratus, Moore. Plates XIV, fig. 6; XV, fig. 6; 

 XVIII and XIX, fig. 25. 



T. alteralus, Moore, P.Z.S. Lond., 1882, p. 245, pi. xii, 

 ff. 4, 4a S- 



^. Upperside : the bluest of the genus with less violet than any 

 of its allies; it is perhaps the only one that can truly be termed 

 blue; the spot closing the cell, in the primaries only, is not very 

 prominent, whilst the spot in the secondaries at the anal angle is 

 distinct. The terminal dark line is linear. The underside is greyish 

 rather than white; the pattern is small, very much broken up, 

 the spots and dashes being rusty red ; in some females this may 

 become tawny brown. 



The genitalia are distinct and large, the clasps being nmch the 

 shape of a ham with the apex sharply serrate at the knuckle end; 

 the horn-like sclerites are straight, stout and long; the bristles are 

 long, strong and abundant ; the tegumen is not so deeply divided, 

 with rather finer and shorter bristles and Avith the falces large and 

 very strong; the aedoeagus is short with the front jjart suddenly 

 reduced and tapering to the tip. The tcctorius is rather small, 

 of the usual shape with the anellus very pronounced. The andro- 

 conia are large and broad, somewhat ovate proximally, the base 

 being evenly oval with the foot-stalk central; the sides are very 

 slightly curved; the distal curve is slight also and not quite even; 

 there are sixteen rows of lainina, the sculpturing being wide apart 

 and very distinct. 



