164 
Beekeeping 
whjch the stomatogastric system (sympathetic system) 
has its origin (StgNv). The subcesophageal ganglion gives 
off nerve branches to the mandibles (MdNv), maxilla* (MxNv) 
and labium (LbNv). For a study of the minute structure of 
the brain and the paths of the various nervous elements the 
reader is referred to the works of Kenyon ' and Jonescu. 2 
,„ In ^ th ? r ,f x the number of ganglia is reduced to two 
(Figs. 78 and 84, IGng and 2Gng). The first innervates the 
first pair of legs while the second is a combination of four 
ganglia, as shown by the fact that it innervates the meso- 
The brain of the bee. Jr. comp, neurol., VI, 
1 Kenyon, F. C., 1896. 
pp. 133-210. 
—,1897. The optic lobes of the bee’s brain in the light of recent 
neurological methods. Am. nat., XXXI, pp. 369-370 
’Jonescu Cl. N., 1909. Vergleichende Untersuchungen liber das 
XXXVIIi r Honlgbleue - Jcuulauhei * Zeit. f. Naturwiss., XLV, N. F., 
