374 



identical with Dendryphantes auratus C. Koch '), which Westring ad- 

 duces with a note of interrogation, and which is stated to have a 

 somewhat higher cephalothorax than D. pini (hastatus); nor can it, 

 as Simon supposes, be the same as A aj -finis (Luc), Sim. 2 ), which, 

 according to Simon, belongs to the same "groupe" of Attus Sim., as his 

 A. insignitus or Yllenus V-insignitus (Clekck), nob. 



(Pag. 555.) 7. A. petrensis [= Euophrys petrensis (C. Koch) 1837]. 



Syn.: 1837. Euophrys petrensis C. Koch, Uebers. d. Arachn.-Syst., 1, p. 34. 

 1848. Attus petrensis id., Die Arachn, XIV, p. 49, Tab. CCCCLXXV, 



fig. 1307. 



1851. „ „ Westr., Forteckn. etc., p. 62. 

 1863. Salticus cocco-ciliatus Cambr., Descr. of 24 new spec, cet., in 



Zoologist, 1863, p. 8562 (2). 



1869. Attus „ Sim., MoDOgr. des Attides, p. 609 (143). 



1870. Euophrys petrensis Thor., On Eur. Spid., p. 217. 

 1872. Attus petrensis Sim., Kevis. d. Attidaj, p. 204 (80). 



The spider which C. Koch calls Attus petrensis, is without a 

 doubt the female to Salt, cocco-ciliatus Cambr., of which Cambridge 

 had the kindness to send me a cf and a ? ad. I have myself here at 

 Upsala captured a full-grown specimen of each sex of S. cocco-ciliatus: 

 the male served as the type of Westring's description of his A. pe- 

 trensis; the female I transmitted to Simon, who determined it to be 

 "A cocco-ciliatus Sim." As every word in C. Koch's description of his 

 A. petrensis suits this female, and as his figure also exactly resem- 

 bles her, I see no reason to doubt their identity, and I therefore re- 

 serve to Westring's spider the specific name petrensis, which has right 

 of priority before cocco-ciliatus. — German specimens of E. petrensis, 

 from Miinster in Westphalia, have been sent me by Mr Karsch. 



The female of this species is very unlike the male: she is de- 

 stitute of the red hairy covering on the face, the palpi are yellow, 

 with the femoral joint for the most part black , the legs yellowish, with 

 black rings, etc. *The vulva seems to consist of a tolerably large, 

 shining, brownish area truncated behind, which in front exhibits 

 two fovese (?) and has a slight depression in the middle, behind, 

 limited by a small protuberance at each corner. 



1) Uebers. d. Arachn.-Syst., 1, p. 32; Die Arachn., XIII, p. 92, Tab. 

 CCCCXLVH, fig. 1154. 



2) Lucas, Explor. de l'Algerie, Arachn., p. 161, PI. 7, fig. 4; Simon, Monogr. 

 d. Attides, p. 71 (61). 



N;o 3 (pp. 229-374:) published April 12* 1872. 



