srnaEM s i iMPiri. iii.n. 



This siibli'i-iius is ili.'ir.-icl iii/.cd liy ils simple, cili.-ili' .-iiil ciiii.'Hi 

 in lln' tiuilr; ;m(l In llu- I lioi-.-ui'' crcsl cillici- dixidcd l,il ( r;il ly or 

 al).st'nl. n(\ ri' willi ,i ilisliml k<(l like ridnc on llic collar and 

 prnt liorax. 



Main of the species seem lo lie in an uiislahle e\ ol ill ionary 

 sidle, llic p,"cnilalia \aryini;' rcmarkalily williin I lie s[)ccies, in some 

 ii'roups. 'I'liis will lu (akcn up mor( in di l.iil in llic various grt)Uj)S. 

 Til-' L!,roui)s nicnlioiK'd herein arc purely arbitrary and merely 

 erealed for eonvenienee in ifUiilihealion. Hence Ihey are as small 

 as it seems possible, at this time, to make them. 



At first it was intended to key the whole sub<;enus as a single 

 i;roup genital i( ally I mi I more mature consideration points to the con- 

 elusion thai il is betler to first separate into groups on structural 

 and superficial characters, and then to key to species. 



Key to the Guori's oi' the Subcuonus Lampra 

 I. — Tliorax with a sjjreading divided crest, 

 A. — Crest large, conspicuous, 



a. — Primaries with a longitudinally striate appear- 

 ance due to the basal dash extending to the t.p. 

 line; and the black filling of the cell extending 

 basally of the orbicular and outwardly of the 

 reniform. Ordinary spots when visible show as 

 white patches ; reniform usually large ; orbicular 

 often dwindling, (ampulla of clasper membrane- 

 ous) Mirabilis 



b. — Not so, — the black markings never presenting a 

 longitudinally striate appearance, orbicular and 

 reniform never showing as white patches, (am- 

 pulla of clasper always strong and chitenous), 

 a^. — Antennae of male with long cilia arranged in 

 blocks on the segments ; when viewed under a 

 strong lens causing an almost lamellate ap- 

 pearance due to their absence between the 

 joints, (penis armed with both spine and 



numerous small spines on a plate) Insularis 



b\ — Antennae of male simply ciliated, the cilia 

 not arranged in blocks on the segements, 

 (penis armed with single spine only) Exsertistigma 

 B. — Crest small, easily lost ; often not visible on rubbed 



specimens, (ampulla of clasper membraneous). ...i^iscoJt^aZi* 



II- — Thorax without spreading divided crest, 



A. — Cell between stigmata filled in with black, contrast- 

 ing against the ground color of the primaries.... DJjJcoJc?o^ra 

 B. — Not so — if cell is black filled there is no contrast with 

 the ground color of the jDrimaries, 

 82 



