1912] Stomoxys Calcitrans Linn. 429 
The salivary glands (Fig. 3, s. g.) are situated partly in the 
thorax, and partly in the abdomen. Their two ducts arise from 
the common salivary duct (Plate XXXIV, Figs. 2 and 4, sd.) in 
the head, and follow a parallel course through the thorax until 
the abdomen is reached. Here they become slightly wider 
apart, and then make a sharp turn outward and forward. Their 
extreme ends are slightly enlarged. ‘Throughout their whole 
course they occupy a ventral position to the remainder of the 
alimentary canal. 
The Malpighian tubes, m. ¢. in Fig. 3, are long, slender, and 
much coiled. They are readily seen in dissections, being easily 
distinguished by their opaque and yellowish appearance. They 
arise from the narrow, lower intestine, a single tube on each 
‘side. From each of these, in turn, two tubules branch, those of 
the left side only being indicated in the figure. 
BIBLIOGRAPHY. 
Hansen, H. J. Mouth parts of Glossina and Stomoxys, pp. 105-109 in the 
Monograph of Tsetse Flies by E. E. Austin, London, 1903. 
Tulloch, F. M. G. The Internal Anatomy of Stomoxys. Proc. Roy. Soc. Lond. 
Ser. B., Vol. 77. 1905-6, pp. 523-531. Also in Jour. Army Med. Corps, 
Lond. Vol. 7. 1906. pp. 154-162. 5 Figs. 
The species dealt with in this paper is not known, as Lieut. Tulloch 
‘states: ‘‘The dissections of the local variety of Stomoxys, which form the 
subject of this Note, were made at the suggestion of Prof. Minchin, during 
his direction of the Royal Society’s Commission on Sleeping Sickness in 
Entebbe, Uganda. Lieutenant Tulloch describes the Digestive System, the 
Nervous System, the Circulatory System, and the ™ and 2 Generative 
Organs. 
Giles, G. M. The Anatomy of the Biting Flies of the Genus Stomoxys and 
Glossina. Journ. Trop. Med. Lond. Vol. 9. 1906. pp. 99, 153, 169, 182, 198, 
‘217, and 235. 1 Pl. and 36 Figs. 
The parts dealing with the digestive tract, and the reproductive organs 
are taken mainly from Tulloch and Minchin, whose figures are reproduced. 
‘Stephens, J. W. W., and Newstead, R. The Anatomy of the Proboscis of Biting 
Flies Ann. Trop. Med. & Parasitol. Liverpool, Vol. 1. 1907. pp. 171-198. 8 pls. 
‘Surcouf, J., and Picard, F. Note sur les diptéres du genre Stomoxys en Abyssinie 
Bull. Soc. Path. Exot., Par. Vol. 1, 1908. pp. 195-198. 
This paper deals with the Genus Stomoxys in general but the following 
particulars are given on the mouth parts: 
“Appareil buccal: L’appareil buccal est réduit; il se compose en dessus, 
d’un labre triangulaire, tranchant sur les bords et limitant une cavité ou se 
trouve la langue ou hypopharynx, non piquante et percée d’un canal en son 
milieu. 
“‘La lévre inférieure, tranchante, faite en forme de gouge, pénétre dans 
les tissus et forme le dessous. Cette lévre inférieuer porte deux prolongements 
nommés paraglosses, qui sont hérissés de grosses épines tactiles. Elle porte 
les palpes prés de sa base, et, au repos, sert 4 envelopper la langue.”’ 
