1905.] NATURAL SCIENCES OF PHILADELPHIA. 317 



C. nigripalpis Em., Trans. Conn. Ac, VI, p. 38, PI. IX, fig. 4. 1882. 

 Erigone nigripalpis Marx, Proc. Nat. Mus., XII, pp. 535, 537. 

 1890. 

 C. similis Banks, Trans. Am. Ent. Soc, XXIII, p. 67. 1896. 

 C. unicolor n. sp. 



C. Xanthippe Keys. {Erigone), Spinn. Am., Therid., II, p. 192, PI. 

 XVIII, fig. 251. 1886. 

 Clitolyna E. Sim., Hist. Nat. Ar., I, p. 673. 1894. 

 C. electa n. sp. 

 The following species, described under the genus Erigone, I have not 

 attempted to place generically : 

 KeyserUng, Spinn. Am., Therid., II. 1886. 

 E. calcarata, p. 181, PI. XVII, fig. 240. 

 E. jamularis, p. 198, PI. XVIII, fig. 258. 

 E. famulatoria, p. 182, PI. XVII, fig. 242. 

 E. infernalis, p. 180, PI. XVII, fig. 239. 

 E. minutissima, p. 219, PI. XIX, fig. 276. 

 E. polaris, p. 148, PL XVI, fig. 215. 

 E. relaxaia, p. 154, PI. XVI, fig. 220. 

 E. schumaginensis, p. 182, PI. XVII, fig. 241. 

 E. solitaris, p. 179, PI. XVII, fig. 238. 

 E. ululahilis, p. 184, PI. XVII, fig. 244. 

 E. umhratilis, p. 201, PI. XVIII, fig. 261. 

 E. urusta, p. 193, PI. XVIII, fig. 253. 

 E. vacerosa, p. 200, PI. XVIII, fig. 260. 

 Thorell, Bull. U. S. Geol. Sur., III. 1877. 

 E. cucuminum, p. 482. 

 E. strabo, p. 483. 



II. Notes and Descriptions of New Species. 

 In the following notes all measurements are given in millimeters. 

 In determining the curvature of the rows of eyes, the posterior row is 

 viewed from above and the anterior from before. 



CERATINELLA Em. 



Emerton {Trans. Conn. Ac., VI, p. 32) proposed the name Ceratinella 

 for the genus Ceratina Menge, preoccupied. The species described by 

 Emerton under this name, with the exception of C. hrunnea Em., did 

 not belong to Menge's genus Ceratina, type C. hrevis Wid. For these 

 species E. Simon {Ar. Fr., V, p. 595) proposed the name Ceraticelus, 

 and later {Hist. Nat. Ar., I, p. 651) designated C. fissiceps Cambr. as 



