182 



being only 2% times as long as the cephalothorax, and its meta- 

 tarsi being as long as (not perceptibly longer than) the tibiae, as 

 also by the number of the spines on the four posterior thighs, above, 

 which are only two, whereas in D. 4-pnnctatus ? the 4 th pair of legs 

 is three times as long as the cephalothorax, its metatarsi visibly (at 

 least */ a millim.) longer than the tibiae, and the spines on the four 

 posterior thighs above are three in number. — This species is much 

 rarer in Sweden than D. sericeus or 4-punctatus. 



(Pag. 343.) 4. D. COgnatllS [= Drasstis cognatus Westr. 1861]. 



Syn.: ?fl843. Dkasscs fuscus C. Koch, Die Arachn., X, p. 123, Taf. CCCLXVII, 



fig. 837. 



1866. ,, ,, L. Koch, Die Arachn. -fain. d. Drassiden, p. 86, 



Taf. IV, fig. 58. 



C. Kocn's synonym here given is far from certain. L. Koch 

 however also takes it up under the species at present in question, 

 for which he lays claim to the Latreillan specific name fuscus. But 

 D. fuscus Latr. ') lives under stones, not, like D. cognatus, under 

 the bark of trees. At any rate opinions are so divided as to what 

 Latreille meant by his I), fuscus — it has been taken up under at 

 least four different species {D. fuscus Walck. 2 ), D. fuscus Sund., D. 

 fuscus L. Koch and D. segestviformis Duf., Sim.) — that, as is seems 

 impossible to decide which is right, it is certainly best to drop that 

 specific name for the present. It is probably reserved to some fu- 

 ture accomplished French arachnologist to search out not only this, 

 but many other species described by Latreille and Walckenaer, but 

 which for the present cannot be recoguized. 



In cf of D. cognatus the tibial joint of the palpus is scarcely 

 shorter than the patellar, something shorter than it is broad at the 



1) Gen. Crust, et Ins., I, p. 87. 



2) It seems to be quite a different species, that Walckenaer in H. N. d. 

 Ins. Apt. described under the name D. fuscus, from that which he first, in 

 Faune Franc., Arachn., mentions under that name. The latter he describes in 

 the following words (and citing Latreille'S D. fuscus) loc. cit., p. 161: ~JD. noir- 

 dtre, D. fuscus (Long., 5 lig). II a la forme du drasse noir, mais il est d'un 

 bon tiers plus grand que lui. Sa couleur est rouge-brun sale. L'abdomen est 

 soyeux, plus fonce et plus brun; les pattes sont plus pales. Les cuisses de la 

 paire anterieure ne sont pas aussi renfiees que dans le Drassus ater. J'ai trouve 

 une seule fois cette espece a Saint-Cloud, le 6 juin; elle habite sous les pierres 

 comme la precedente [Dr. aterf. — Compare Walck., H. N. d. Ins. Apt., I, p. 617. 



