84 MR. T. J. BEIANT ON THE 



and very densely punctate, the punctures in series, and the 

 alternate interstices elevated, so as to form very fine, rather in 

 distinct costse, and sparingly clothed with erect, rather coarse, 

 very sliort, pale setas. 



A good series was secured, in the same tree as Cautomus Jiystri- 

 cuhts, near JS'agasaki, 25th March, 1881. 



DESCEIPTION OF PLATE III. 



Fig. 1. Neotrichus Mspidus, Sharp. 



2. Sympanotus pictus, Sharp. 



3. Labrumiinus variegatus, Sharp. 



4. Ithris sculpturata. Sharp. 



5. Gempylodes Lewisi, Sharp. 



6. Cylindromicrus gracilis, Sharp. 



Fig. 7. Teredolcsmus politus, Lewis, 



8. Erotylathris costatus. Sharp. 



9. Dastarcus longulus. Sharp. 



10. Cautomus hystriculus. Sharp. 



11. Thyrodertos 'porcatus. Sharp. 



Notes on th.e Antennae of the Honey-Bee. By T. J. Beiant. 

 (Commuuicated by B. Datdon Jackson, Sec. Lin. Soc.) 



[Read 15th November, 1883.] ' 



The antennae of the Honey-Bee (worker) are inserted quite close 

 together, immediately above the upper margin of the clypeus 

 (fig. 1). They consist of a pair of jointed cylindrical organs of 

 two distinct parts, called respectively the scape and the flagellum. 

 The scape is united to tbe cranium by a hemispherical cup, to 

 which, it is joined by a short constricted peduncle (fig. 2 a). At 

 its anterior end it is united to the flagellum, and is normally at 

 right angles to it. 



The antenna moves as a wbole upon a point or fulcrum formed 

 by the interlocking of the peg or process (a in fig. 3) with, the 

 notch in the cup (h in fig. 2). This process arises on the inner 

 or medial side of an arch which bridges over the antennary fossa 

 to near its top on the outer edge, and the process is thus nearly 

 in the centre of the fossa. The movements of the antenna are 

 controlled by three muscles :— (1) a muscle inserted into the outer 

 margin of the basal cup, which moves it outwards (figs. 3 &4, J) ; 

 (2) a muscle inserted into the upper and inner margin, which 

 moves it upwards and inwards (c) ; and (3) a muscle inserted in 

 the lower margin, which opposes the other muscles and lowers 

 the antenna (d). These muscles arise from the internal skeletal 

 parts of the cranium, which cannot conveniently be described 

 without entering into details of the endocranium. 



