376 



it is referred by Westring, it does not seem to me possible that it 

 can belong, especially as Sundevall has described that species under 

 the name of A. rudis. Neither variety is identical with Ar. musco- 

 sus Clerck, which Sundevall calls Attics striatus. 



A. Dorthesii Sav. et Aud. (Descr. de l'Egypte, 2" Ed., XXII, 

 Arachn. , p. 405, PI. 7, fig. 9), which Walckenaer (Ins. Apt., I, p. 

 416) classes under his A. lunulatus, is certainly not synonymous 

 with D. hastatus. Walckenaer in the same work, p. 405, erroneously 

 places Salt, pint Hahn under his A. bi-lineatus, which is an entirely 

 different species. 



Ohlert has given , loc. cit. , detailed and comparative descriptions 

 of D. hastatus and D. medins (rudis) and shown that not only the 

 marking and size are different in these two forms, but that there is 

 also a difference in the relative length of the legs, and moreover 

 that the nests in which the young are hatched, the eggs, and even 

 the young themselves are different in these two so closely allied 

 species. Kespecting their organs of copulation etc., see the following 

 species. 



(Pag. 558.) 9. A. medius [= Dendryphantes rudis (Sund.) 1833]. 



Syn.: 1833. Attus rudis Sund., Sv. Spindl. Beskr., in Vet.-Akad. Handl. 



1832, p. 205. 



1837. Dendryphantes medius C. Koch, Uebers. d. Arachn.-Syst., 1, p. 32. 

 ?1837. „ MINOR id., ibid. 



1846. „ MEDIUS id., Die Arachn., XIII, p. 77, Tab. CCCCXLV, 



figg. 1141—1143. 

 1851. Attus medius Westr., Forteckn. etc., p. 55. 

 1865. Dendryphantes medius Ohl., Arachn. Stud., p. 1. 

 1869. Attus medius Sim., Monogr. d. Attides, p. 578 (112). 



Sundevall's name has in this instance, as we see, priority to 

 that of C. Koch, and must therefore be retained. — The tibial joint 

 of the male's palpus both in D. hastatus and D. rudis is armed on 

 the exterior side at the apex with a short, pointed tooth: the bul- 

 bus has in both species at the apex a blunt spine pointing forwards 

 and curved downwards, and a little below it, outwards, is perceived 

 a finer and shorter, pointed spine, curved in about the opposite di- 

 rection, but often difficult to be distinguished. This last-mentioned 

 spine seems to be somewhat stouter in IK rudis than in D. hastatus, 

 in which it is very fine. I see no other difference in the male's palpi of 



