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THE ENTOMOLOGIST, 



district of Tiflis Government, p. 23) which resembles G. simillimus 

 in the structure of these appendages, and the Amasia examples 

 show the same characteristics, but not in such a pronounced 

 degree. The Beikos insect differs from those from Amasia as 

 regards the black median lines on the front of the thorax, these 

 in the former being as in G. simillimus, while in the Amasia 

 specimens the resemblance is rather with vulgatissimus. The 

 black condition of the legs of the Beikos insect, of which more 

 raaterial is to be desired, recalls vulgatissimus, while the black 

 lines of the thorax and the structure of the appendages are closer 

 to those of simillimus. 



It may be useful to contrast a description of G. simillimus 

 (after De Selys) with notes on the Beikos male : — 



G. simillimus. 



Front of head yellow with a single 

 black transverse line on the front ; 

 lower lip yellow ; occiput yellow, 

 space round ocelli black. Back of 

 head yellow with a large black spot 

 behind the eyes prolonged towards 

 their middle. 



Prothorax black 

 yellow. 



spotted with 



Thorax yellow with six straight 

 black lines rather thick upon the 

 front ; the two median contiguous a 

 little broadened anteriorly and touch- 

 ing the prothorax by a little prolonged 

 point ; the antehumeral very close to 

 the humeral,"-- the sides of the thorax 

 have besides a black oblique posterior 

 line and another intermediate, short, 

 which branches towards the legs and 

 forms a spot behind the posterior legs. 



Interalar space yellow spotted with 

 black. 



Abdomen moderate, a little con- 

 stricted from 3rd to 6th segments, 

 increasing a little towards the ex- 

 tremity of which the sides are a little 

 dilated and the under side concave. 



The abdomen is black spotted with 

 yellow tlms : — 



The arete and a great spot pos- 

 teriorly in 1st segment ; a dorsal spot 

 with three lobes touching almost both 

 ends of 2nd. 



G. schneiderii (Beikos). 



Frons yellow with a rather heavy 

 black line between frons and nasus, 

 with two rectangular black extensions 

 on the latter; rbinarium, which has 

 the anterior angles black, with 

 blackish lines. Labrum with both 

 margins heavily lined with black, 

 and a median black virgule. Labium 

 blackish. Behind the eyes black 

 with a large yellow spot. 



Prothorax black, anterior margin 

 yellow, a large yellow rounded spot at 

 each side and a small central twin spot. 



Thorax yellow with six straight 

 thick lines on the front, the two 

 median contiguous a little broadened 

 anteriorly and touching prothorax by 

 a little prolonged point; the ante- 

 humeral and humeral close, separated 

 by a space about equal or rather less 

 than their breadth ; on the side is a 

 short black line which broadens out 

 over the middle legs and joins the 

 humeral, while another complete 

 narrow line forks over the hind legs, 

 the posterior branch forming a large 

 black marking behind these legs. 



Interalar space yellow spotted with 

 black. 



Abdomen black spotted with yellow 

 thus : — 



1st segment mostly yellow, a black 

 marking on each side of dorsum ; a 

 dorsal spot with three lobes touching 

 both ends of 2nd segment, central 

 lobe much the largest. 



These almost touch in G. vulgatissimus. 



