457 



towards the anus, one on each side; the area of the four centre eyes 

 is somewhat broader behind than before. (Compare Ausserer's descrip- 

 tion). Mr Cambridge, who has seen this specimen, thinks it is a 

 variety of E. Herd Blackw. , which has normally three yellow longi- 

 tudinal stripes on the abdomen, quite as S. pygmcea 5. But neither 

 C. Koch nor Ausserer appears to have seen a 5. sanguinea ? with 

 yellow stripes on the abdomen. The females of E. IJerii Blackw. I 

 can only distinguish from S. pygmaa t by their cephalothorax being 

 of a more uniform reddish or yellowish brown colour, whereas in 

 • my Swedish and in most of my German specimens of S. pygmcta % 

 the cephalothorax is darker brown, its pars thoracica with broad 

 yellowish margins. But according to Ausserer again the cephalo- 

 thorax in "S. pygmaa V" is of a uniform colour, varyiug from yel- 

 lowish brown to black! If, as I believe, the colour of the cephalo- 

 thorax in S. pygm&a % varies in this manner, E. Herii Blackw. — 

 a female — is certainly but a 8. pygmcea with the cephalothorax 

 of one colour, without pale margins. 



S. sanguinea Auss. $ and »S. pygmcea $ may be easily distin- 

 guished by the following marks. In £. sanguinea Auss. $ the dis- 

 tance from the border of the clypeus to the anterior centre eyes is 

 considerably greater than the length of the area of the centre eyes: 

 the lamina has at its base, on the outer side, a stout, crooked, fal- 

 ciform process, which at its rounded apex is somewhat thickened. 

 The bulbus forms on the middle of the side that is turned outwards 

 a strong, sharp spine somewhat curved at the apex; on the inner 

 side of this, nearer to the margin of the lamina, is perceived a very 

 fine, almost straight spine. In S. pygmcea 3 on the contrary the 

 distance between the margin of the clypeus and the anterior centre 

 eyes is at the utmost only equal to, not greater than, the length of 

 the area of the centre eyes. The falciform process of the lamina 

 bulbi is smaller than in »S. sanguinea Auss., scarcely thickened at 

 the apex. The outer side of the bulbus is not extended into a strong 

 sharp spine, but forms a short, broad and blunt protuberance, which 

 at its apex is a little depressed or notched. At about the middle of 

 the downward-turned side, the bulbus exhibits a fine, sharp-pointed, 

 much curved spine, and immediately in front of this, another finer, 

 pointed, somewhat curved spine, which often lies so close to the 

 bulbus, that it cannot be perceived without great difficulty. 



The bulbus in the real S. Herii (Hahn) closely resembles that 

 of S. pygmcea (E. anthraeina Blackw., 5. Herii Westr.); but the 



