256 MR. F. PICKABD CAMBRIDGE ON THE [Apr. 15, 



portion of the abdomen inclines to be marked by indistinct 

 narrow, transverse, pale cinctures, as in an example from Abyssinia ; 

 while the markings on those from New Zealand more resemble, 

 though very indistinctly, those of geometricus. 



In the case of these examples there are unf oi-tunately no males. 

 But although the first pair of legs in the New-Zealand examples 

 are distinctly shoi-ter in jDroportion than those of L. hasseliii from 

 Australia, yet this character is found also, in varying degrees, 

 amongst examples from Australia and India, so that one cannot 

 regard it as constant. 



Hab. New Zealand : Portland Island, Hawkes Bay (Eobson) ; 

 Canterbury [Brit. Mus.). 



III. Alphabetical List of Described or Figured Species of the 

 Genus Latrodectus. 



Latrodectus. Abbot's figures 191 § , 194 $ , 195 ? , 395 c? ad., 

 344 S juv. All these are varieties of L. mactans Fabr. 

 (Abbot's drawings in Brit. Mus. Nat, Hist. 1792). 



Latrodectus apicalis A. G. Butler, 1877. 



Proc. Zool. Soc. Lond. 1877, p. 75, pi. xiii. fig. 2, etc. Rab. 

 Galapagos Islands. Type in coll. Brit. Mus. — A variety of 

 L. 'mactans Fabr. 



Latrodectus argus Aud. in Sav., 1825-27. 



Savigny's ' Egypte,' p. 137, pi. 3. fig. 10. Rab. Alexandria. — 

 This is L. tredecim-guttatus (Rossi). 



Latrodectus carolinus (A. G. Butler), 1877. 



Proc. Zool. Soc. Lond. 1877, p. 75, pi. xiii. figs. 3, 3 a, 3 6. 

 Hab. Charles's Island, Galapagos. Sub Theridion.—Kn imma- 

 ture female of L. mactans Fabr. 



Latrodectus cinctus Blackwall. 



Ann. Mag. Nat. Hist. (3) xvi. p. 341 (1865). Hab. Shire River, 

 South-east Africa, Zambesi. Also Bogos and Scioa (Shoa). — 

 This species is clearly a variety of the form called by Thorell 

 hasseltii. I have before me a young female from Shoa, referred 

 by Pavesi to " cinctus" which agrees with Blackwall's description. 

 The form of the mai-kings coincides also with that of Thorell's co- 

 type of scelio from Cape Yoi'k, which is now befoi-e me, the only 

 difference being that thei'e is a single transverse bar beneath, 

 similar to that obtaining in the form called menavodi and also in 

 some examples of tredecim-giottatus. The shortness of leg i. in 

 proportion to the length of the carapace bi'ings it nearer to the 

 katipo variety of hasseltii which is found in New Zealand, etc. 



Latrodectus conglobatus 0. Koch, 1838. 



Die Arachniden, iv. p. 41, fig. 274. Hab. Greece. — A variety 

 of L. tredecim-guttatus Rossi. 



