57 



in the families, which stand most apart. In this place I will only set forth a few remarks 

 to explain a few terms, used in the descriptions, and a few features of them. 



Explanation of terms. — The transverse lines of the céphalothorax of 

 most of the Panctenodaciyli are designated lines, stripes or grooves according to 

 their appearance and structure; their breadth is the distance from their anterior 

 to their posterior margin. When the length of a tergal or sternal sclerite is spoken 

 off, the distance from its anterior to the posterior margin is understood; the 

 breadth is that from the one lateral margin to the other. The exceedingly long 

 and slender completely simple hairs or hair, with which the tip of the abdomen 

 in many forms and the tarsi of the two last pair of legs in most forms are 

 adorned, are designated "tactile" hairs, because they show similarity to the real 

 tactile hairs on the fingers of the palps; these two kinds of hairs are generally 

 easily distinguished from each other by the wide cavities, within which the latter 

 kind is situated. The organs, which Hansen (49. p. 218, tab. V, fig. 14 o) discovered 

 on the large chelae of Chelifer cimicoides F., and the arrangement of which show 

 a specific difference within the Cheliferinae Sim., are designated sense-spots. 



Measurements. — I have everywhere under the description of the species 

 given the measurements of céphalothorax, abdomen, sometimes antennae and 

 of the joints of the palps, of the first and the fourth pair of legs; all these 

 measurements were done with the mikrometer. These measurements are given, 

 hot because the real length, breadth or depth of any joint of the appendages are 

 thought worth recording for its own sake, but because this way appears (he best 

 one, in which to give the relative dimensions in the most concise form. The 

 relation between the measurements of the joints of the appendages has to a great 

 extent been used in the description of species; this was as far as the palps are 

 concerned first proposed by Hansen and used in his good description of Danish 

 species (9; cf. also 49. p. 23.'5). The real measurements have been given, because 

 it will make it possible for future workers to compare the relations between the 

 dimensions of the different joints of the animals described here with those of the 

 animals under their examination, not only those, which have been used in the 

 descriptions here, but also others, which may prove useful in the future with 

 increased knowledge. 



Under the heading "Measurements" the figure outside the bracket gives 

 the length of the organ in question, while that within the bracket gives the 

 greatest breadth or depth, as far as the legs are concerned; if two figures are 

 found within the bracket under céphalothorax, the first refers to the breadth of 

 the front margin and the second to that of the hindmost one. The length of the 

 antennae is measured from the base to the tip of the immovable finger; the length 

 of the joints of the palps is that of the posterior margin as far as the femur and 

 tibia are concerned, but that of the anterior in the trochanter; the hand is 

 measured from its base to the base of the movable finger and the latter from the 

 base to the tip, both along the ventral margin. The joints of the legs are measured 



U. K 1). Vidcnsk. SelsK. ,Slir , 7. Kii-kkc. natunUlcnsk ojs niiilliem. Afd. 111. 1. 8 



