496 



The genera Cteniza [Latr.] (Berth.) and Nemesia (Sav. et Aud.) 

 may very well be both allowed to keep their places, as also the 

 specific names Sauvagesii (Dorth.) and Sauvagii (Rossi), which have 

 been independently given, the former to a Nemesia, the latter to a 

 Cteniza. Aosserer, who loc. cit. distinguishes these two genera, 

 rightly remarks, p. 165 (49), that the species of the former genus 

 (with N. cellicola as its type) are more closely allied to Walcke- 

 naer's " Digitigrades inermes" than to the other Mining-spiders. In 

 these last (among which is Cteniza, with C. Sauvagii (Eossi) as type) 

 the centre fovea of the cephalothorax is w-shaped (open in front), 

 and the head very high ; in Nemesia on the contrary it is transverse 

 or ^-shaped (open behind), and the head comparatively low, as in 

 the "Digitigrades inermes" and the "Plantigrades" of Walckenaer's 

 Mygale. 



That Dufour's Mygale carminans is identical with M. earminans 

 Latr., which is supposed to be the male to "M. ccementaria", is by 

 no means as yet certain: Dcfour states that the bulbus genitalis is 

 "termine par un bee acere, comprime', mais contre I' 'assertion de La- 

 treille nullement bifule". But to this Latreille answers (in Cuvier, 

 Regne Anim., 2 e ltd., IV, p. 230): "J'ai de nouveau ve'rifie le fait, 

 et je me suis convaincu que je ne m'e'tais pas trompe". 



With N. Sauvagesii or ccementaria I am not acquainted. — In the 

 female of N. cellicola Sav. et Aud., Auss. ') — which sex was un- 

 known to Ausserer — the cephalothorax is 8 millim. long (exclu- 

 sive of the mandibles) and 6y 2 millim. broad: it is 1 millim. longer 

 than the metatarsus + tarsus of the 4:th pair of legs. All the tarsi 

 are destitute of spines, and the four posterior tarsi are without 

 scopula, with which the metatarsi and tarsi of the four anterior legs 

 are provided. The anterior centre eyes are separated from each other 

 and from the anterior lateral eyes by an interval pretty nearly equal 

 to the diameter of the centre eyes. The maxillse have at the inner 

 (anterior) corner of the base a few small short teeth, which do not 

 seem to be arranged in one row. The cephalothorax is blackish 

 brown, without any distinct spots. 



0. Gr. Costa 2 ) has described and figured under the name of 

 Myg. meridionalis a spider, which seems to belong to the genus 



1) Sav. et Aud., Descr. de l'Egypte, 2<* Ed., XXII, p. 304, Arachn. , PI. 

 I, fig. 1; Auss., Beitr. i. Keimtn. d. Territ. , p. 168 (52); Mygale cellicola 

 Walck., H. N. d. Ins. Apt., I, p. 239. — Cteniza africana C. Koch (Die Arachn., 

 V, p. 10, Tab. CXLVI, fig. 344) is probably the same species as jV. cellicola. 



2) Fauna del Regno di Napoli, Arachn., p. 14, Tav. I, fig. 3. 



