124 



1864. Walckenaera aggeris Black\v., Spid. of Gr. Brit., II, p. 301, 



PI. XXI, fig. 216. 



1868. Lophocarenuh SCABRICULUM Menge, Preuss. Spinn., II, p. 205, 



PI. 40, tab. 102. 



(Pag. 251.) 29. E. Sllbaequalis [= Erigone sub-aqtmlis Westr. 



1851]. 



Syn.: 1851. Erigone surequalis Westr., Forteckn. etc., p. 42. 



Of this species, distinguished hy the little pointlike fovea im- 

 mediately behind the interval between the posterior lateral and cen- 

 tral eyes of cf, I have received a (dried) male specimen from We- 

 string. To Westring's accurate description may be added, that the 

 patellar joint of the palpus is conical, its length scarcely greater 

 than its breadth at the apex; the tibial is about the same length 

 as the patellar joint, but thicker: viewed from the side it appears 

 somewhat dilated below, and broader than it is long: this inferior, 

 rounded contour is accompanied by a fine curved spine, proceeding from 

 the base of the bulbus. The clava is shortly oval, almost as long 

 as the two preceding joints put together, the bulbus but little com- 

 plicated. The species resembles Micryph. ovatus C. Koch, Ohl. but 

 this last species is somewhat smaller, has the area of the 4 central 

 eyes in cf much longer than it is broad , the tibial joint of the pal- 

 pus at its extremity, above, drawn out into two pointed processes, 

 the external one being the larger, and directed somewhat upward, 

 the internal lying close in upon the lamina; the back of the cepha- 

 lothorax more uniformly convex, without depression in front of the 

 centre, a narrow linear groove behind the interval between the po- 

 sterior lateral and central eyes, etc., all which serve to distinguish 

 it from E. sub-cequalis. — Mr Cambridge has communicated to me an 

 English specimen of E. sub-cequalis under the name of Walckenaera 

 fortuita Cahbr. 



l) C. Koch, Die Arachn., VIII, p. 96, Taf. CCLXXIX, fig. 665, 666; 

 Ohlert, Aran. d. Prov. Preuss., p. 56, 75. — C. Koch under his Micr. ovatus 

 erroneously cites Tlieridium sulcifrons Eeuss (Zool. Misc. Arachn., p. 225 (231), 

 PI. XV, fig. 10), which no doubt is the same as Platyopis sulcifrons Menge 

 (Preuss. Spinn., II, p. 179, PI. 33, tab. 81), and is nearly allied to, bat specifically 

 different from Neriene bicuspis Cambr. (Descr. of 24 spec, of spid. etc., p. 8626 

 (28)). Of both these species of Erigone I possess original specimens. 



