NOTES ON THE BRITISH MOSQUITOS. 261 



There may be two nearly allied species here, as Theobald de- 

 scribes the hind claws as being simple ; this, however, is very likely 

 an error. Kertesz states that they are toothed, and this agrees with 

 my observations. A specimen of Zetterstedt's Culex nifjrituUis lent 

 to me for examination was a typical A. cinereus ; this confirmed a 

 suspicion I had previously entertained that the two names apply to 

 the same species. 



Genus 4. TiENioRHYNCHUs. 



1. T. richiardii, Fie. — A rather obscure-looking insect, but 

 easily distinguished from the other British species by having all 

 the wing-scales rather broad ; the wings are speckled as in 

 several species of Ochleroiatus. Thorax reddish-brown, with 

 golden-brown scales. Abdomen blackish, unhanded, but with 

 pale lateral spots. Legs speckled ; indistinct pale rings at the 

 bases of the tarsal joints, and in the middle of the metatarsi. 

 Length about 6 mm. 



Not common. Patching and Angmering ponds, Sussex, and 

 Littlesea, Dorset {Rev. A. E. Eaton) ; Cambridge {F. Jenkinson); 

 Sutton Cold field (it!. C. Bradley) ; Wye, Kent, and Norwich 

 (Theobald) . 



Theobald's record of this species from Toronto really refers to 

 T. perturhans, Walk., which is distinguished from T. richiardii by 

 having a pale ring near the apex of the tibiae. The name of this 

 species is spelt wrongly in Theobald's monograph, and in the ' List 

 of British Diptera' (1901). 



Genus 5. Theobaldia. 



1. T. annulata, Schrank. — Wings spotted as in A. maculi- 

 pennis. Gross-veins in one line. Femora with narrow pale rings 

 near the tip. Broad whitish rings at the base of each tarsal 

 joint, and in the middle of the metatarsi. Segments of abdo- 

 men brown with whitish basal bands, the second segment with 

 a median whitish longitudinal stripe. Average length, 7*5 mm. 



Common. A particularly bad biter. 



2. T. morsitans, Theo. — Wings unspotted. Cross-veins sepa- 

 rated by nearly the length of the posterior. Proboscis and palpi 

 of female black-scaled, the palpi white-tipped. Scales of thorax 

 partly dark brown and partly golden, the golden ones tending to 

 be arranged in longitudinal lines. Abdomen dark brown, the 

 segments with broad whitish basal bands. Femora without pale 

 rings. Tibiae and metatarsi striped with yellowish white on the 

 sides. Tip of metatarsus and second tarsal joint narrowly 

 yellowish, broader yellowish areas at the bases of the first three, 

 narrower ones at the bases of the last two tarsal joints. Meta- 

 tarsus of the front legs of the male distinctly longer than the 

 remaining four joints together (120 : 105). About seven teeth in 

 the pecten of the air-tube of the larva, no spines beyond the 

 pecten. Average length, 6*5-7*5 mm. 



