1908.] NATURAL SCIENCES OF PHILADELPHIA. 221 



than behind (see, e.g., figs, of PI. XVII) ; in some the foveolse subcirciilar, 

 not thus elongate and widening conspicuously anteriorly (group 7>o- 

 chosa). Bulb of male palpus bearing at front of basal lobe a strongly 

 chitinized special fold or scopus which is essentially exterior in position ; 

 scopus presenting two processes ; viewed directly from below the inner 

 of these appears usually as a more or less retrorse, barb-like process, 

 but in some (group Trocliosa) longer and strongly salient, the basal 

 portion mostly more or less concealed by a basal fold which leaves 

 only the apical, exterior portion visible in ventral aspect; median rim 

 of conductor bearing one, or sometimes two, mostly slender and simple 

 tenacula; a lectal fold well developed, an auricle of varying size, l3ut 

 always smaller than in Schizocosa. See, e.g., figs, of PI. XVII. 



1832. Lycosa Hentz (ad. part, max.), Sill. J. Sci. and Arts, 21, p. 106. 



1842. Lycosa Hentz (ad. part, max.), J. Bost. Soc. N. H., 4, p. 228. 



1848. Lycosa (ad. part.), Arctosa and Trochosa, C. Koch, Die Arachniden, 



14, pp. 94-98. 

 1869-70. Tarentula and Trochosa Thorell, On European Spiders, p. 192. 



1875. Lycosa Hentz (ud. part, max.), Sp. U. S., pp. 11 and 24. 



1876. Lycosa Simon (ad. part, max.), Arcahn. Fr., 3, p. 233. 



. Tarentula and Trochosa Kevserling, Verb. z. b. Ges. Wien, p. 610. 



1877. Tarentula Thorell, Bull. U. S. G. S. Terr., 3, p. 520. 

 1885. Lycosa Emerton, Trans. Conn. Acad. Sci., 6, p. 482. 



1890. Tarentula, Trochosa and ad. part. Lycosa Marx, Proe. U. S. N. M., 12. 



1898. Lycosa Simon (ad. part, max.), Hist. Nat. Araign., 2. 



1902. Lycosa (ad. part, max.), Proc. Acad. Nat. Sci. Phila., p. 536. 



1903. Lycosa Comstock, Classif . of N. A. Spiders. 



1904. Lycosa Chamberlin, Can. Entomologist, Vol. XXXVI, p. 176. 



. Lycosa (ad. part.), Montgomery, Proc. Acad. Nat. Sci. Phila., p. 276. 



. Trochosa, Montgomery (ad. part), ibid., p. 300. 



Pars cephalica moderately elevated: in front truncate to more or 

 less obtuse; its lateral margins either a little converging anteriorly or 

 parallel; sides rounded outward below; face moderately high, trapezi- 

 form, evidently widening downward; in profile either vertical or 

 sloping forward from top to the base of chelicerae (PI. IX, fig. 5). 

 Quadrangle of posterior eyes in most but one-fifth or less the length 

 of the cephalothorax. Seen from above, the eyes of second and third 

 rows are much more than their diameter from lateral margins of 

 the pars cephalica (PI. IX, fig. 2). Chelicene long and robust, in 

 length at least one and one-half times the height of the face ; upper 

 margin with three teeth of the usual proportions, or the first one 

 rarely absent; lower margin with three stout teeth which are subequal, 

 or with the third sometimes reduced, or else with tw© stout eciual teeth 

 (PL IX, figs. 1 and 3). 



Legs robust, the distal joints usually not slender as in Pardosa. 

 Tarsi and usually also metatarsi of anterior legs scopulate and with the 

 15 



