ON THE CORRKLATION OF PATTERN IN RHOPALOCERA. 179 



well-known with its plain brown iipperside and green underside. Its 

 male armature consists of a rapidly tapering, wedge-shaped clasp, 

 without any fulcrum (a characteristic of the Uuralmae), the tegumen 

 ample, with broad, lateral cheeks moderately excised, and long- 

 formidable falces, whilst the fedoeagus is very long indeed, and very 

 narrow. The abundance of long strong bristles on the clasp and 

 tegumen is also an important feature in this genus. Very similar,, 

 indeed to it, so far as these organs are concerned is Satstnna frivaldszloji. 

 (PL XV., fig. 9), though much different in pattern, the upperside being 

 blueish, and the underside dull brown and somewhat mottled ; at the 

 same time there are also differences in the prehensores. The wedge- 

 shaped clasps are much broader, the tegumen is less ample and 

 proportionately more excised on the dorsum, whilst the falces are 

 heavier and stronger. 



StrifiiKDt titiis (the type of the genus) (PL xv., fig, 10), is easily 

 recognisable by its spotteil underside. The genitalia differ also in their 

 erect position in the shape of the clasps, and in two (so far as I know) 

 quite unique shields extending on two strong arms from the girdle (one 

 shield being developed from each side of the girdle). I bring this 

 forward to show a specific difference rather than a generic one. 



Stri/iiion v-albiiiii (a close relation of our British w-albniii) (PL xv., 

 fig. 11,) is distinct in colour and pattern with its chestnut coloured 

 patch on the upperside and the fine white lines on the underside, but 

 the male armature proves it to be closely allied to the previous genera. 

 It has, however, no saccus at all, which is an important character in 

 this order. 



Xeob/nina teiujstroemi (PL xvL, fig. 12), is abundantly distinct in its 

 shape and in the someAvhat Plebeiid type of markings on its underside, 

 the genitalia, however, show at once its alliance to this section. The 

 small narrowish clasps and the long aedoeagus bring out this promin- 

 ently, the tegumen however is very different having very unusually 

 copious laterals, the falces are very large with a bold deep curve, whilst 

 the girdle is very short. 



IlieMor fedtscJienkoi (PL xvi., fig. 14), and all in its genus show great 

 differences in pattern, but again the armature is peculiarly Strymonid. 

 The clasp is much longer and. finer, and the tegumen differs slightly, 

 whilst the neuration also differs, it having an extra subcostal vein in 

 the primaries. Eurali.s qiiercm (PL xviii., fig. 21), is entirely different in 

 pattern and colour as also in the structure of the genitalia, its alliance 

 to the genus Neoli/rnua is shown in the large hooded tegumen, its 

 deviation in the shorter, thicker and differently shaped, fedceagus, 

 whilst the clasps also differ entirely in general pattern. 



In colour Laeosopis robon's (PL xvL, fig. 15), is very close to the 

 previous species though in the underside pattern it is very distinct. This 

 change is likewise carried on in the genitalia, the tegumen being 

 unique, I believe, in its quite vertical position instead of being 

 horizontally placed. The a^dceagus is shorter still, whilst the clasps are 

 also further reduced, though they are sufficiently near to ijiicrcii^; that 

 if we were to cut off the prolongation at the upper apex of the clasp of 

 that species we should approximate to those we are now considering. 



I havebrought Cif/aritiszohra (Pl.xvii.,fig.l6),inat this pointto show 

 its correlation with the Heodinac on the one hand in its general colour, 

 and with the Tluralinne and Plebeiinae in structure on the other hand. 



