AND HABITS OF DIAXENES DENDROBII, GAHAN. 3 
full-grown ones. Some of these last I carried away with me, 
and at the Royal Botanic Garden, Edinburgh, bred out the 
imagines (six in number), these proving to be, as suspected, 
Diaxenes dendrobit, The adult beetles issued on 
March 2nd, 1897. March 15th, 1897. 
» > » ” 18th, ” 
8th, ” » 2oth, » 
With the six beetles thus won, I proceeded to work out the 
details of the round of life of the pest in one of the glass-houses 
at the Royal Botanic Garden. 
POSITION OF DIAXENES AMONG THE COLEOPTERA. 
The beetle is a longicorn belonging to the family Lamiidze and 
the sub-family Apomecynine. The genus Dzaxrenes was founded 
in 1884, the type being a beetle found in a Chelsea nursery on 
Dendrobium Plalenopsis; this beetle was named Dzuaxenes 
tayloritz, W. The only other species of the genus is our pest. 
DESCRIPTION OF IMAGO. 
I quote in full the description given in the “Annals and 
Magazine of Natural History” for 1894 :— 
“Strongly and rather closely pee with the punctures 
partly concealed by the close pubescence, this is mostly of a 
fulvous-brown or drab colour, but there are darker brown areas 
no 
each side, the two latter converging anteriorly. Each elytron 
has about six lines of a slightly yellowish tint, of which one lies 
along the outer margin; the second sets out just below the 
shoulder and is continued in a nearly straight direction along the 
side of the elytron; the third proceeds from the upper part of the 
shoulder and joins the second a little before the apex ; the next 
two lines are dorsal in position, they are sub- parallel to one 
another in the anterior fourth of the elytron, behind which they 
rather abruptly converge, after again diverging slightly they 
converge to join one another about the beginning of the apical 
fourth, whence they are continued as a single line up to the 
outer angle of the oblique apical truncature: the sixth is a very 
short line passing back from the base. In addition to these six 
lines, an ashy-grey streak may be seen along the suture, with a 
B 
