256 LIST OF INSECTS. 



P. dilatata. — I had the good fortune to capture this species on the 14th. 

 of June, of the present year, 1858: it appears to be both very local and 

 rare. Mr. Smith tells us that not more than half-a-dozen specimens have 

 come under his notice altogether, and those principally from Arundel, in 

 Sussex. Mine were taken near Brighton. 



P. signata. — Not by any means uncommon in this neighbourhood in June; 

 both male and female have been captured. They were both seen in some 

 plenty in 1857, near Lewes. 



Sub-family II. — Acutilingtjes. — Westwood. 

 SPHECODES.— Latreille. 

 Sphecodes gibbus. — Of very frequent occurrence near Brighton and at 

 Eastbourne, but I have not observed it in the vicinity of Lewes. It appears 

 in May. 



S. rufeseens. — Very common; several colonies in this neighbourhood are 

 annually observed. Appears in May. 



S. ephippia. — Equally common with the last, and commonly inhabits the 

 same bank. The beginning of May. 



HALICTUS. 



Halictus rubicundus. — The most common species of the genus, and appears 

 to be generally distributed. It appears throughout April, May, and June; 

 and I would here remark that the females of this genus invariably appear in 

 the spring, whereas the males are not to be found until the autumn. Eor 

 more detailed remarks on their economy, see Mr. Smith's interesting account 

 in his "Monograph," page 21. 



H. xanthopus. — Common in this locality and near Brighton in April and 

 May. It is apparently a southern species, and local. It is a very beautiful 

 species. 



H. leucozonius. — Of frequent occurrence in August on Hypocliceris radicata 

 and the Bagwort, (Senecio Jacobaa.) I have never met with a colony. 



H. quadrinotatus. — This is a rare species in this district. It has been 

 captured both near Glynde and Lewes. 



H. cylindricus. — Most abundant, but very variable in point of size. It has 

 a very strong aromatic scent, very similar to musk. The females appear early 

 in April, and the males in August, on thistle-heads; both black and red 

 varieties are equally common. Its colonies are of frequent occurrence. 



H. albipes. — Not uncommon. The females, in common with many of this 

 tribe, are especially partial to the flowers of the Dandelion, (Taraxacum offi- 

 cinale,) in spring; the males are difficult to ^discriminate from those of 

 Cylindricus to the unpractised eye. 



H. lugubris. — It appears to be locally distributed. It is not of uncommon 

 occurrence near Brighton, Lewes, etc., in spring and autumn. 



H.fiavipes. — Common near Offham and elsewhere. This species also fre- 

 quents the Dandelion in early spring and the Bagwort in the autumn. Both 

 Hymenoptera and Diptera are most attracted by yellow flowers, and especially 

 those of the Cumpositce. It is a very interesting sight on a glowing August 



