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whether they discharge here I have not been able to investigate. 
The spacious cavity of the tubes is covered with a single layer of 
epithelial cells, the limitation of which is not distinct, but which are 
provided with round basal nuclei; there is a thin tunica propria. 
The Mazillary Glands. On each side of the above mentioned 
glands there is another pair arising near the dorsal surface and 
directed towards the base of the pharyngeal tube (pl. VI fig. 2 and 
7 5). This pair is longer than the antennal glands, and its hind- 
most tip is placed more backwards than the point of the former. 
These glands are cylindric and much larger than the above named. 
They seem to consist of a clear or vitreous mass which is divided 
into larger and smaller meshes by strings, distinctly seen when 
coloured by hæmatoxylin.  Distinct nuclei are placed along the 
margins; I have not been able to find any lumen in these glands. 
On account of their direction towards the base of the pharyngeal 
tube I regard them as salivary glands and call them the maxillary 
glands. 
The Coxal Glands. In the lumen of each muscular funnel 
ånd fastened to its walls by short strings a strongly twisted glan- 
dular tube is placed (pl. VI fig. 3, 7 d and fig. 15) which seems 
to be continued into a duct directed towards the first or second 
pair of the coxae. I am certainly not able to prove that the diffe- 
rent tubes which are seen in sections, are parts of a single 
tube, but this seems to me the most probable. The histological 
structure of this gland is very much like that of the coxal glands 
in other Arachnids as described by Lancaster and Sturany (18). 
The walls consist of a single layer of cells which merge into each 
other. The nuclei are placed near the lumen; I have not seen the 
same difference between the basal and the distal part of the pro- 
toplasma, as found in many other Arachnids. On account of their 
structure and position I think that these glands are homologous with 
the coxal glands. 
The Horse-shoe Glands. Along each side of the cephalothorax 
there is a gland most like an elongated or compressed horse-shoe, 
