401 
NIPONIUS ANDREWESI, Lewis. 
Plate XXIII, figs. 4, 4a. 
Reference :—Lewis, Ent. Mthly. Mag. 2nd ser., Vol. iv, p. 183 (1893). 
Classification :— Order, COLEOPTERA. Family, Histeride. 
Predaceous upon Sphzrotrypes siwalikensis and S. coim- 
batorensis. 
Description. 
Larva.—Elongate pink or red with a yellowish head 
followed by 12 segments, the last constricted. 
Beetle.—Somewhat elongate with stout mandibles; black, 
shining ; the two expesed posterior segments of the abdomen 
are a deep red in colour, as are all the ventral portions of the seg- 
ments and the legs. Thehead is rather densely punctate; the 
thorax about as broad as long with two large excavations, one on 
each side midway between the front and base, less densely punc- 
tured than head and punctures vary in size. The elytra are 
more evenly punctured than the thorax, the basal margin being 
slightly elevated, without dorsal striz. Length 43 millim. 
Plate XXIII figs. 4, 4a. 
Life-History. 
The life-history of this beetle and number of generations 
passed through in the year is likely to correspond to some 
extent to that of its hosts, the Sal and Anogeissus Scolytids. 
In the Dun Sal areas pink larve of various sizes were present 
gn the larval galleries of the Sal bark=borer on September 22nd, and 
were feeding upon the scolytid larve. On October 4th full-grown 
larve and white pupz were present. ‘Through November and on 
throughout the winter months pink larvz were to be found in the 
galleries, and also pupe encased in silk web coverings which I 
consider were those of the Niponius. These were usually in 
depressions eaten out in the bark. In February the hibernating 
places of the mature beetles were discovered. They bore into 
the thick bark of old trees and spend the winter here as is the 
habit of the Sal Scolytid. This is a most interesting discovery. 
In March larve of all sizes are present in the trees. It is 
possible that they do not confine themselves to the Sphzrotrypes 
larve: but further observations are required on this point. 
