510 



most entirely brownish yellow. This male perfectly resembles the 

 figure Lucas loc. cit. has given of L. argus cf, except that in this 

 last the number of spots on the abdomen is six in the middle row 

 and five in each of the others. As regards L. erebus Sav. et Aud. ') 

 which is probably identical with L. lugubris (Dup.) 1820 2 ), I can 

 hardly venture, with Duges and Blackwali, 3 ) , to assume that that 

 form is only a variety of L. 13-guttatus, because its vulva, judging 

 from Savigny's figure, is at the hinder border equably and simply 

 curved, which is not the case in L. 13-guttatus. — The following 

 European species of this genus appear to me to be tolerably du- 

 bious : Latrod. martins Sav. et Aud. 4 ) , Therid. 5-guttatum Keyn. 5 ) , 

 L. lugubris Motsch. 6 ), L. hispidus C. Koch 7 ) and L. Schuchii id. 8 ). 



Van Hasselt 9 ) is of opinion that even several other, exotic spe- 

 cies, L. mactans (Fabr.), L. perfidus Walck., L. variolus Walck. etc. 

 are mere varieties of L. 13-guttatus. This appears to me 'hardly 

 probable ; but until specimens of both sexes of these forms have been 

 found and accurately described, nothing certain can be said upon the 

 subject. Thus much only I think I may affirm, that the South-Ame- 

 rican spider (from Curacao, Aruba, Bonaire etc.), which van Hasselt 



lant que dans les jeunes". Lambotte, Notice sur le Ther. malmignatte, in Bull, 

 d. l'Acad. Eoy. de Sciences de Bruxelles, IV (1837), p. 491. 



1) Descr. d. l'Egypte, 2« Ed., XXII, p. 352, Arachn., PI. Ill, fig. 9. 



2) TJieridion lugubre Duf. , Descr. de six Arachn. nouv:, in Ann. gen. d. 

 Sciences phys., V, p. 355, Tab. LXIX, fig. 1. — The spider which I (On Eur. 

 Spid., p. 96) took to be L. lugiibris (Duf.), is not a Lathrodectus , but a IAthy- 

 pliantes, viz. L. dispar (Duf.) or Phrurolithus lunatus C. Koch (<= Latr. mar- 

 tins Sav. et Aud.?); on this species see above, p. 94. 



3) Notes on Spid. etc, in Ann. and Mag. of Nat. Hist., 3 Ser., XX, p. 

 212 (12). 



4) Descr. de l'Egypte, 2e Ed., XXII, p. 354. 



5) Totus aterrimus, villosus; abdoraine magno, globoso, supra thoracem tri- 

 bus, ante tubos textorios binis, guttis sanguineis". Krynicki, Arachnogr. Koss. 

 Dec. prima, in Bull, de la Soc. Imp. d. Nat. de Moscou, Annee 1837, p. 75, 

 Tab. VI, fig. 2. 



6) 'Totus aterrimus, brevissime villosus; abdomine magno, globoso, punctis 

 quatuor in dorso impressis; subtus leviter infuscato, ante tubulos textorios linea 

 transversa sub-sinuata flava; tarsis infuscatis". Motschoulsky , Not. sur deux 

 Araign. venim. de la Russie mend. , ibid., Annee 1849 (T. XXII), p. 290, Tab. 

 II, figg. 3, 4. . 



7) Die Arachn., Ill, p. 9, Tab. LXXV, fig. 166. 

 S) Ibid. , III , p. 10 , Tab. LXXV, fig. 167. 



9) Studien over den z g. Curacaosche Oranje-Spin , in Tijdschr. voor Entom,, 

 in, pp. 46—66. ' 



