120 MR. E. M'LACHLAN ON THE INSECTA COLLECTED 



dark chalybeous in colour. Indicated as Having been found under 

 stones. 



AEACHNIDA. 

 Araneide A. 



The materials collected on the Expedition have been noticed 

 and described (with other Arctic species) by the Eev. 0. Pickard 

 Cambridge, in the ' Annals and Magazine of Natural History,' 

 4th ser. vol. xx. pp. 273-285, pi. viii. (October 1877). 



Fam. Agelenides. 



Tegenaria detestabilts, Cambridge^ sp. n., I. c. p. 275. 



One example, Dobbin Bay, 28th Aug. 1876 {Feilden) ; found in 

 a cabin on board the ' Alert,' and supposed by Capt. Teilden to 

 have been introduced with plants, w^iich were collected by nearly 

 all the officers. 



!Fam. Theridiides. 

 Erigone psychrophila, Thorell ; Cambridge, I. c. p. 278, pi. viii. 

 fig. 4. 



One example without indication of locality. Two females from 

 lat. 82° 33', June 21st and 24th, 1876, perhaps also belong 

 here. Capt. Eeilden {in litt.) says this spider was very common, 

 and occurs as far north as he reached. Eound also by the 

 American ' Polaris ' Expedition at Polaris Bay. Originally re- 

 corded from Spitzbergen. 



Erigone proyocans, Cambridge, sp.n., I.e. p. 279, pi. viii. fig. 5. 



Adults of both sexes found in lat. 82° 27' and 82° 33', June 

 1876. Capt. Eeilden says this also was common. 



E. yexatrix, Cambridge, sp. n., I. c. p. 280, pi. viii. fig. 6. 

 One adult female from Discovery Bay {Hart). 

 In addition to these there are several examples of the genus 

 declared by Mr. Cambridge to be indeterminable. 



Eam. Lycosides. 



Lycos A glacialis, Thorell ; Cambridge, I.e. p. 281. 



Three examples from Hayes Sound, lat. 79° {Feilden), and two 

 from Discovery Bay {Hart). Eound also at Polaris Bay. 



Tarentula exasperans, Cambridge, sp. n., I, c. p. 283, pi. viii. 

 fig. 7. 



An adult male from Discovery Bay {Hart). 



