3. SPHECODES. 19 



Dichroa analis, Illig. Mag. v. 48. 



Eversm. Volgo-TJral. 48. 

 Sphecodes gibbns, St.-Farg. Hym. ii. 542. 

 Sphecodes rufescens, Smith, Bees Great Brit. 17. 

 Sphecodes pellucidus, Smith, Zool. iii. 1014, var. 



Female. Length 4-4| lines. — Head and thorax black and shining, 

 closely and finely punctured ; head about the same width as the 

 thorax, the flagellum testaceous beneath, the face having a scattered 

 short griseous pubescence ; the disk of the thorax not so closely 

 punctured as the head, the metathorax having at its base a semi- 

 circular rugose enclosed space ; wings fusco-hy aline, the nervures 

 black, the anterior tibiae slightly ferruginous in front ; the apical 

 joints of the tarsi ferruginous ; the abdomen shining, delicately 

 punctured, the sixth segment and apical margin of the fifth 

 black. B.M. 



Male. Length 3-3f lines. — Coloured as in the female, differing only 

 in having the base of the abdomen more or less black, in rare in- 

 stances the apex only black ; the face clothed with white pubescence; 

 the wings clearer than in the female ; the antennae not so long as 

 the head and thorax, slightly submoniliform. B.M. 



This species is equally abundant with the preceding, and is found 

 in great numbers in the autumn, frequenting various flowers, but 

 particularly thistle-heads. It is readily distinguished from the 

 S. gibbus by having its thorax much more finely punctured and 

 by the colour of its wings ; its head is not proportionally so wide, 

 and the antennae of its males are shorter and submoniliform. I 

 have seen a black variety of the male of this species from Paris, but 

 have not found it in England. 



3. Sphecodes subquadratus. 



S. ater, capite magno subquadrato ; abdomine ferrugineo, apice 

 nigro. 



Sphecodes subquadratus, Smith, Zool. iii. 1014. fig. 5 tf ; Bees Great 

 Brit. 18. 



Nyland. Notts, ur Sallsk. pro Faun, et Flo. Fenn. ii. 235. 



Sichel, Ann. Soc. Ent. Fr. (1865) 414. 



Thorns. Opusc. Ent. 98 ; Hym. Scand. ii. 155. 

 Sphecodes gibbus, Wesm. Obs. Gen. Sphec. 5. 



Female. Length 4-4| lines. — Head and thorax black, the vertex of 

 the former subquadrate ; the head closely punctured ; the flagellum 

 of the antennae, except one or two of the basal joints, rufo-piceous. 

 Thorax : the disk shining and with distant punctures ; the wings 

 subhy aline and iridescent, their apical margins slightly clouded ; 

 the nervures fusco-ferruginous ; the legs sometimes rufo-piceous ; 

 the tarsi ferruginous, palest towards their apex. Abdomen shining 

 red, the three apical segments black. B.M. 



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