end Systematic Arrangement of British Spiders. 401 



caution to prevent the possibility of falling, whether successful 

 in seizing its prey or not. 



In June the female constructs one or two cocoons of white 

 silk of a slight texture and lenticular form ; the larger ones mea- 

 sure about j^th of an inch in diameter, and usually contain 15 

 or 16 spherical eggs of a pale yellow colour, not agglutinated 

 together. These cocoons are comprised in a cell of compact 

 white silk fabricated in crevices of rocks, walls, and the bark of 

 old trees, in which the female also generally occupies a place. 



By subdividing the extensive genus Salticus, M. Koch has ob- 

 tained several minor groups which he has dignified with generic 

 appellations ; but as even the species regarded as types of his 

 new genera are, for the most part, connected by close ties of 

 affinity, it is not probable that his views will be adopted by 

 arachnologists generally. The genera Calliethera, Heliophanus, 

 Euophrys and Marpissa, including species indigenous to Great 

 Britain, present differences in structure of importance as afford- 

 ing specific characters, but much too slight and circumscribed 

 to be rendered available in promoting the systematic changes 

 proposed to be made by M. Koch. 



21. Salticus sparsus. 



Salticus sparsus, Blackw. Research, in Zool. p. 417. 



Titulus 32, Lister, Hist. Animal. Angl. De Aran. p. 89. tab. 1 . fig. 32. 



Specimens of this spider were captured on the outer walls of 

 Crumpsall Hall, near Manchester, in the summer of 1828. It 

 pairs in the month of May. 



22. Salticus coronatus. 

 Salticus coronatus, Blackw. Linn. Trans, vol. xLx. p. 121. 



abietis, Hahn, Die Arachn. B. i. p. 61. tab. 16. fig. 46. 



Blancardii, Hahn, Die Arachn. B. i. p. 64. tab. 16. fig. 48. 



Alius coronatus, Walck. Hist. Nat. des Insect. Apt. t. i. p. 412. 



falcatus, Sund. Vet. Acad. Handl. 1832, p. 213. 



Euophrys falcata, Koch, Uebers. des Arachn. Syst. erstes Heft, p. 33 ; 



Die Arachn. B. xiv. p. 24. tab. 472. fig. 1290-1295. 

 Titulus 34, Lister, Hist. Animal. Angl. De Aran. p. 91. 



The sexes of Salticus coronatus, which is common in the woods 

 of Denbighshire and Caernarvonshire, differ gi-eatly in colour, 

 and have been described as distinct species. They pair early in 

 June. 



23. Salticus xanthogramma. 



Attiis xanthogramma, Walck. Hist. Nat. des Insect. Apt. t. i. p. 415. 

 Titulus 33, Lister, Hist. Animal. Angl. De Aran. p. 90. 



The attempt to identify the " Araneus suhftavus, oculis smaragy' 

 dints, item cui secundum dunes tres virgula crocea " of Lister (De 



Ann. ^ Mag. N. Hist. Ser. 2. Vol.xu. 26 



