16 
A Monograph of Culicidae. 
Observations .— Four specimens of this species were taken by 
Dr. Eees in the Albert Dock, Tilbury, and sent to the Museum. 
They answer best to Rondani’s C. pulcripalpis, and T think are un¬ 
doubtedly that species ; they also agree to Rondani’s C. penicillaris 
and his closely related G. pulcritarsis. It cannot be C. penicillaris , 
although it answers so nearly to it, because the last hind tarsi 
are white ; no mention of this marked character is made by 
Rondani, or Ficalbi in his more recent description from Rondani’s 
specimen and fresh material as well • it cannot be C. pulcritarsis, 
because, according to Ficalbi, the £ tarsi have the larger fore 
ungues biserrated, whereas these specimens have uniserrated 
ungues; no mention is made of the ungues of C. pulcripalpis, 
and as that species has the end tarsi of the hind legs white, I 
think the specimens sent by Dr. Rees must belong to that 
species. 
Rondani’s description is based on a poor specimen in which 
the thoracic ornamentation seems to have been denuded. There 
are differences in the abdomen, but in the two specimens in the 
collection the abdomen varies, and I think that discrepancy must 
not be taken into account. 
On the other hand, I should certainly have said Dr. Rees’ 
specimens were Rondani’s C. penicillaris had Ficalbi stated that 
the last tarsal joints in the hind legs were white, and that the 
larger anterior claw of the $ had one tooth, not two. 
This is the first record of this species in England, the only 
other locality being Italy. It was probably introduced to the 
Albert Dock on some ships coming from Italian ports, and is 
probably a recent introduction, being a too well-marked species 
to have escaped notice. It closely resembles C. dorsalis, but the 
last hind tarsal joint is white. 
58. Culex dorsalis. Meigen. 
(Syst. Beschr. iv. 242, 18, et i. 2, 8, Meigen ; Dipt. Scand. ix. 8464, Zetfer 
stedt; Isis (1831), 1203, 50, Ruthe; Fn. Austr. ii, 627, Schiner; Dipt 
Neer. 325, Vail der Wulp; Bull. Soe. Ent. Ital. p. 246 (1896), Ficalbi; 
Ent Mo. Mag. p. 228 (1895), Austen.) 
(Fig. 84, PI. XXI.) 
Thorax brown, with bright tawny-red curved scales and pale 
creamy scales forming two lines on the mesothorax, and also form¬ 
ing a line in front and a patch before the scutellum. Abdomen 
