176 THE CANADIAN ENTOMOLOGIST. 



Seemingly associated with the apical position of the scopus in Pirata 

 is a drawing fL>rvvard of pails at the base of the bulb. The lunate area is 

 large and conspicuous, being one-third or more as long as the entire bulb ; 

 whereas in Lycosa and Pardosa it is evidently smaller. In Schizocosa 

 (new) it is very small and of a characteristic form. 



Of course there is a considerable number of structures in the 

 copulatory organs other than those which have been briefly treated here, 

 which furnish characters available for systematic work. The conductor 

 emboli, for example, in its general form and in the structure of its furrows, 

 and especially in the form and disposition of the tenacula, affords 

 characters by which alone, at least the commoner genera may be 

 separated by one who has sufficiently acquainted oneself with them. 



In conclusion, it may be well to give brief diagnoses of the three 

 genera that have been more particularly discussed in the preceding pages, 

 and also of Schizocosa, new. The last named genus is erected for a group 

 of species, including ocreata, Hentz, and its allies, some of which have 

 been placed in Lycosa, others in Pardosa, or the same one in both by 

 different workers. Other species of the genus are venustula, Hentz, 

 { = Pardosa gracilis, 'Qks., Sind Lycosa rehicens and verisimilis, Montg.), 

 bilineata, ^vci. { = Pardosa biliiieata, Em., and Lycosa ocreata pulchra, 

 Montg.), and htinuili, Bks. For the sake of brevity, only characters 

 drawn from the copulatory organs are given below without indicating other 

 important characters in correlation. 



Pardosa, C. Koch. 



Epigynum with a distinct guide, which is but weakly or not at all 

 developed anteriorly, its transverse arms entire ; openings of the 

 spermatheca protected, leading on each side into a relatively large and 

 depressed fovea or basin, the lateral furrows becoming narrower and 

 shallower anteriorly. Pars basalis of bulb of male palpus bearing a 

 scopus in a median position and evidently proximal from the front edge 

 of the lobe ; scopus attached only at base, toward which it bears a short 

 spur, when elongate, comparatively slender, not much widening proxiinad ; 

 a true lectus but rarely present, when so, never produced into an auricle ; 

 extreme lower or posterior margin of inferior furrows of conductor bearing 

 a variously-formed but usually stout and often lobed or dentate tenaculum. 



Lycosa, Latr. 

 Epigynum with a strongly-developed guide, the septal piece distinct 

 and well-developed anteriorly ; openings of the spermatheca protected ; 



