xxvt. 



THE ^DCEAGUS. 



This, in most cases, is a slightly curved stout tube, 

 in some, however, the curvature is great, whilst in others 

 the tube is slender and needle-like. Occasionally it is 

 decorated at the orifice with spines, and rarely it is 

 branched. 



THE ANELLUS. Pierce. 



This cone-like tube bears on its ventral surface a shield 

 or plate, called The Juxta, which is commonly decorated on 

 either side by a pad covered with hairs or scales which I 

 term The Cristce. The cristse are subject to great modifi- 

 cation as they may lie flat on the skin of the juxta or they 

 may be more or less raised so as to form papillae (Ectropis, 

 pi. xiii.). 



The anellus may also be extended into two lateral 

 lobes which are termed Anellus lobes. These lobes are in 

 some cases united so as to produce a single arm of varying 

 length which is called The Calcar. (Xanthorhoe, pi. xlv.). 



The upper edge of the juxta itself may be produced 

 centrally in the form of a long lip or spout, which may 

 possibly act as a guide to the penis. This lip I call The 

 Canaliculus (Ortholitha, pi. xlvii.). 



THE MANICA. Pierce. 



This name is applied to the eversible membraneous 

 sleeve in which the sedceagus lies. The basal part closely 

 invests the blind end of the oedoeagus to which it is fused 

 just above the point of entrance of the ductus ejaculatorius. 

 When the penis is not extruded the manica lies wholly 

 within the anellus, but during extrusion it is drawn out 

 and may be seen surrounding the aedceagus. The manica 

 may become chitinised, and is often decorated with spines, 

 scobinations, teeth, or hooks (Xanthorhce ferrugata, pi. 

 xlv.}. 



THE LABIDES. Pierce. 

 Springing from the points of union of the transtilla 



