1391.] 295 



EUGASTER SPINULOSUS, LillU. 



The female specimen of E. spinulosus, Linn., in the Museum, 

 wbicb agrees very well with Edwards' figure (Gleanings, ii, pi. 285), 

 looks very different to E. Powijsi, owing to its large size (length, 5L 

 mm.), the greater extension of the black markings on the pronotum 

 (the whole of the hinder ridge is black), and the tawny markings of 

 the abdomen ; but in all other particulars it closely resembles E. 

 Poiri/ni. 



I am not sure if it has already been pointed out that Hetrodes 

 spinulosus, Fisch., Orth. Ross., p. 309, pi. xxxiv, fig. 2 (1834), is a true 

 Hetrodes, and not a Eugaster ; in fact, it is closely allied to, if not 

 identical with, H. pupus, L. E. Guyoni, Serv., is tbe type of Eugaster. 



Eugaster Guyoni, Serv. 



Ill alluding to this species in ni_y former paper, I spoke of it as uiiiforinlj black, 

 but this is not quite correct, for there are small and inconspicuous tawny or reddish 

 dots and speckles on the base and sides of the abdomen, and sometimes also on the 

 back ; but nothing like so well marked, at least in any of our specimens, as in 

 Lucas' figure (Expl. Alg. Orth., pi. ii, fig. 1). 



There are four specimens of E. Guyoni in tbe Museum at present, 

 all males, which were brought from Biskra Bay by Dr. Anderson, and 

 vary very little. 



They are from 27 to 30 mm. in length, and none of them show a fourth small 

 spine, as described by Serville, behind the three lateral ones, though some of them 

 have a small rudimentary spine on one side, either in front of the smaller spine 

 which precedes the two large ones, or on the front edge of the pronotum. Perhaps 

 the normal number of lateral spines in the male is three. Lucas states that the 

 specimen described by Serville, and figured by himself, was a female, measuring 39 

 lines in length, and therefore considerably lai'ger than the males in the Museum 

 collection. 



There is one female Eugaster in the Museum, previously referred 

 to E. Guyoni, which was taken at Dartford, and was believed to have 

 been brought from Tunis with Esparto grass, but it appears to me to 

 belong to a distinct species. 



EUGASTEE LucAsr, sp. n. 

 Hetrodes Guyoni, var., Luc, Bull. Soc. Ent. France (2), ix, p. iv (1851). 

 Eugaster Guyoni, Luc, Ann. Soc. Ent. France (4), i, p. 217 (18G1). 

 Eugaster Guyoni, White, Proc Ent. Soc. Lond., 1888, ]). xxv. 



Deep black, slightly inclining to blue-black above ; moutli-parts and trochanters 

 inclining to reddish ; spines red. Face smooth, sparingly punctured ; mandibles 

 with a deep groove on the outer side ; vortex very thickly punctured ; pronotum 

 strongly rugose-punctate, with four spines in the lateral series, whicli arc broad 



