NOTES ON THE BRITISH MOSQUITOS. 



219 



5. 0. salinus, Ficalbi. — Proboscis and palpi dark brown with 

 scattered pale scales. Scales of thorax uniformly reddish brown. 

 Abdominal segments with distinct basal pale bands, dark brown 

 on the apical three-fourths, with numerous scattered pale scales. 

 Wings and legs (even the tarsi) speckled with light and dark 

 scales. Average length, 3^ 65 mm., 2 5*5 mm. 



Apparently chiefly a sea-coast species ; the British Museum 

 specimens are from Worthing {Rev. A. E. Eaton) ; Walton-on- 

 the-Naze, Essex; Studland, Dorset, and Torpoint, South Devon 

 {Lt.-Col. Yerbury) ; Dartford, Kent (F. W. Terry). 



Synonymy. — This species was originally described by Ficalbi as 

 distinct from 0. nemorosus owing to the absence of silvery-white 

 knee-spots, which, according to the descriptions of Meigen and 

 Schiner, characterise 0. nemorosus. Subsequently Ficaljai examined 

 a specimen of 0. nemorosus named by Schiner in which the pale 

 knee-spots were not silvery-white, and so sank his C. salinus as a 

 variety, differing from nemorosus in the genitalia. I feel sure it is a 

 totally distinct species, both by coloration and habitat. In the 

 writer's synopsis of African Culicidoe this species is wrongly referred 

 to as 0. nemorosus. Theobald's Culicada terriei, described from a 

 single specimen, is nothing but a small specimen of this species. 



6. O. diversus, Theo.— Scales of head and thorax mostly 

 yellowish brown; on the thorax are a median pair, almost 

 touching in the middle line, and a short lateral pair of longi- 

 tudinal dark brown stripes. Proboscis and palpi dark brown, 

 with very few light scales. On the wings the light scales are 

 practically confined to the mediastinal vein. The legs are less 

 speckled than in O. salinus ; the femora are entirely yellowish 

 behind, except at the extreme tip ; the tibiae are mostly pale ; 

 the last four joints of the tarsi entirely black-scaled. Average 

 length, 6-7 mm. 



Apparently a common species. 



This species answers in many respects to Ficalbi's description of 

 what he takes to be the G. ornatus of Meigen, and it is certainly 

 difficult to beheve that it should have been undescribed until 1901. 

 But Ficalbi's description does not correspond with the colouring of 

 the abdomen found in British specimens, and I have been unable to 

 satisfy myself that 0. diversus has been described under any older 

 name. Theobald's C. nemorosus var. luteovittatus is, however, a 

 synonym, as I have proved by comparison of the types. 



7. O. nemorosus, Mg. — Head scales rather light yellowish 

 brown ; thoracic scales forming a broad deep brown band in the 

 middle, extending almost to the scutellum ; at the sides of this 

 band, which is usually quite sharply defined, the scales are 

 concolorous with those of the head. The pale bands of the 

 abdomen are rather variable in shape, but always tend to be 

 contracted in the middle (or expanded at the sides). The apical 

 dark brown portions of the segments are entirely without any 



