198 



of which pair exceeds that of the 1 st pair by the length of a tarsus 

 (the 1 st pair is 6, the 4 th 7 millim.). The surface of the cephalo- 

 thorax is finely and closely chagrined, but shining. — The species 

 differs from M. atra (Latr.), L. Koch, which also has one spine 

 under the tibiae of the 2 nd pair only, by a quite different form of 

 the vulva (in M. atra this organ very much resembles the vulva of 

 M. petrensis L. Koch), by the (always?) totally black thighs, by the 

 maxillse not being broadly truncated at the apex, etc. The tibia of 

 the 3 rd pair has before 1, 1, behind 2, 1, beneath 2, 2, 2 spines. 

 — Of this (Westking's) spider I have only seen one dried but excel- 

 lently preserved specimen, which Westring lent me to examine. 

 Of M. petrensis L. Koch and M. atra id. I have specimens, which 

 Dr Koch has himself had the kindness to identify for me. As I 

 cannot recognize Westring's M. petrensis among the species described 

 by L. Koch, I have given it a new name, M. mverens. 



A Mekmophora- female in my collection, which I captured at 

 Upsala, agrees perfectly with L. Koch's description and figures of his 

 M. serotina (loc. cit. , p. 185, Taf. VIII, figg. 123—125), so that 

 this species also belongs to our Fauna ')• 



1) Mr L. V. Kempelen of Vienna, who has kindly favoured me with many 

 Austrian and other Arachnoidea, and much valuable information, for which I beg 

 leave hereby to express my thankfulness, has sent me a spider from Austria 

 very nearly related to the preceding, which I call M. erebea. It may be recog- 

 nized by the following characteristics: 



Melanophora erebea N. Nigra, palpis ferrugineis basi rufescentibus, pedi- 

 bus nigris, femoribus l:mi paris macula magna testaceo-ferruginea , metatarsis 

 piceis, tarsis rufescentibus; tibiae 2:di paris aculeo subtus arrnatae; area vulvae 

 antice impressione magna cordiformi, postice acuminata et per costam longitudi- 

 nalem bipartita. — $ ad. Long. c:a 7 millim. 



M. Petiverii (subterranece) simillima, forma vero vulvae cet. distincta. Ce- 

 phalothorax 3'/4 millim. lotigus, patellam cum tibia pedum quarti paris longitu- 

 dine aequans, parum nitidus, pilosus. Area oculorum mediorum paullo longior 

 quam latior, postice latior quam antice; oculi laterales postici paullo majores 

 quam medii, qui inter se spatio paullulo minore disjuncti esse videntur, quam quo 

 distant medii antici inter se. Mandibular nigrae, apice piceae. Sternum, labium 

 et maxillae nigro-picea , hae apice sub-testaceo intus (minus late quam in M. Pe- 

 tiverii) truncatae. Pedes l:mi paris 8'/ 2 , 2:di 7y 2 , 3:tii 6V2, 4:ti 10 millim. 

 longi, 4:ti paris igitur pedes l:mi paris longitudine tarsi tantum superantes. 

 Tibiae l:mi paris non aculeatae, 2:di paris aculeum unicum subtus in medio ha- 

 bent; tibiae 3:tii paris antice 1, 1, 1, postice 1, 1, subtus 2, 2, 2 aculeos habent. 

 Abdomen pure nigrum, opacum, fusco-pilosum : mamillae nigrae. Vulva ex area 

 constat oblonga ferrugineo-fusca , postice sub-angustata et rotundata, quae antice 

 fovea magna, oblonga, cordiformi, parum profunda, postice acuminata impressa 



