THORELL, ARACHN1DBR FR. SPETSBERGEN O. BEEREN EILAND. 691 



Ad Treurenberg Bay Spetsbergise marem unicum feminasque 

 duas mense Junii invenit Cel. Prof. A. J. Malmgren. 



Er. longipalpi simillima hasc species est: c? tarnen forma 

 alia palporum, prassertim procursus sub apice partis patellaris, 

 dentibusque fortibus partis femoralis ut et femorum l:mi paris, 

 $ vero margine cephalothoracis spinuloso et vulva paullo aliter 

 conformata dignosci postest. 



4. E. Holmgremi N. nigra, palpis pedibusque obscure 

 testaceis, interuodiis plerisque summo apice nigris, parte ceplia- 

 lica in utroque sexu paullo tantum elevata, depressione levi me- 

 dia a parte thoracica distincta; palpis maris mediocribus, parte 

 tibiali sub-campanulata, apice superius tridentata; vulva e costa 

 transversa antice rotundata, impressionibus duabus sub-tripartita 

 constanti. — o 71 9 ad- Long. c:a 2.^ millim. 



Femina. — Cephalothorax c:a 1 millim. longus, piceo-niger, ni- 

 tidissimus, tenuissime strigatus, inverse ovatus, fronte satis rotun- 

 data, latitudine circiter § latitudinis maximte cephalothoracis aequanti, 

 parte cephalica impressionibus lateralibus et depressione levi postica 

 a parte thoracica distincta, eåque paullo altiore, partis cephalicae 

 dorso fere recto, parum arcuato; a latere visum dorsum cephalo- 

 thoracis igitur non aequaliter arcuatum anteriora versus ascendit, 

 sed depressione illa bis arcuatum evadit. Clypeus mox sub oculis 

 anticis transverse impressus; altitudo ejus longitudinem areas ocu- 

 lorum 4 mediorum dimidiamque mandibularum longitudinem fere 

 aequat. Series oculorum antica parum recurva, postica, desuper visa, 

 evidenter procurva; medii antici reliquis oculis paullo minores sunt, 

 valde appropinquantes inter se, a lateralibus anticis diametro sua 

 distantes; oculi posteriores inter se spatio remoti, quod horum ocu- 

 lorum diametrum saltem aequat. Sternum nigrum. Mandibuhe fe- 

 more antico paullo crassiores, ovatse. dorso parum couvexae, recli- 

 natae, fusco-testaceas. Maxilla? et labium testaceo-fusca. Palpi et 

 pedes obscure testacei, summo apice internodiorum plerumque nigri- 



of the posterior pair. In the male, the first Joint of the palpus is long and 

 somewhat sigmoid, the end of the second Joint is subclavate and has a sharp 

 and longish spine proceeding from it nearly at right angles and direeted 

 downwards. The legs, the second and fourth pairs of which appear to be 

 rather longer than the first and third pairs, are of an ochraceous yellow, while 

 the cephalothorax and abdomen are of a blackish brown colour. 



This species may be named M. Arcticus. Dr Sutherland teils me he 

 found it abundantly around Assistance Bay, running abont among the 

 tufts of vegetation». 

 Öfoers. af K. Vet.-Ak. Förh. Arg. 28. N:o 6. 3 



