MOSQUITOS OF THE PALAEARCTIC REGION. 299 



1 1 . Appendage of claspette three times as long as broad ; basal lobe not 



separated from the side-piece . . . . . . . . pundor (Kirby). 



Appendage of claspette not much longer than broad ; basal lobe separated 

 from the side-piece in its apical portion . . . . . . sticticus (Mg.). 



12. Basal lobe with a strong black spine and short pubescence . . lutescens (F.). 

 Spine of basal lobe when present weaker and paler, and generally accom- 

 panied by long bristles . . . . . . . . . . . . . . 13 



13. Basal lobe small, without spine, but a rugose area extends more than half 



the length of the side-piece . . . . . . . . . . . . . . 14 



Basal lobe larger, spine generally well-marked, rugose area not nearly 



reaching middle of side-piece (except in /n^'j) .. ., .. ..15 



14. Stem of claspette uniformly stout . . . . . . . . annulipes (Mg.). 



Stem of claspette slender apically . . . . . . excrucians (Walk.). 



15. Stem of claspette shorter and nearly straight . . . . . . . . 16 



Stem of claspette longer and strongly curved . . . . . . . . 18 



16. Appendage of claspette winged in the middle only, cylindrical on the 



basal third; basal lobe rather smah, not pointed . . detritus (Hal.). 



Appendage of claspette winged for its whole length or nearly ; basal lobe 

 produced and rather sharply pointed . . . . . . . . . . 17 



17. Basal lobe much longer than broad ; appendage of claspette extremely 



broad . . . . . . . . . . . . . . . . maculatus (Mg.). 



Basal lobe scarcely longer than broad ; appendage of claspette less broad 



semicantans. Mart. 



18. Side-piece with short hair only . . . . . . . . . . . . 19 



Side-piece with long hair arching over the upper surface . . . . . . 20 



19. Basal lobe large, spine present though weak . . . . fyeyi, sp. n. 

 Basal lobe smaller, spine absent . . . . . . . . parvulus, sp. n. 



20. Appendage of claspette with two slight ridges near the base communis (De G.). 

 Appendage of claspette with one ridge or wing, which is broadest in the 



middle 21 



21. Aedoeagus and anal segment heavily chitinised .. .. alpinus (L.). 

 Aedoeagus and anal segment not unusually strongly chitinised . . . . 22 



22. Lobes of ninth tergite with about six short straight bristles . . cataphylla, Dyar. 

 Lobes of ninth tergite with about twelve longer bristles which curve 



outwards . . . . . . . . . . . . . . salinellus, Edw. 



1. Aedes (Ochlerotatus) caspius (Pallas) {= dorsalis, Theo.) (tig. 8 a). 



Culex caspius, Pallas, Reise versch. Prov. Russ. Reichs. i, p. 475 (1771). 



Culex punctatus, Meigen, Klass, i, p. 6 (1804). 



? Cutex siculus, Robineau-Desvoidy, Mem. Soc. d'Hist. Nat. iii, p. 406 (1827). 



Cidex pellicular is, Rondani, Bull. Soc. Ent. Ital. iv, p. 31 (1872). 



? Culex leucogrammus, Loew, Zeitschr. Ges. Naturw. xliii, p. 413 (1874). 



Grabhamia subtilis, Ed. & Et. Sergent, Bull. Mus. Paris, xi, p. 240 (1905). 



Grabhamia willcocksi, Theobald, Mon. Cul. iv, p. 294 (1907). 



Grabhamia longisquamosa, Theobald, Ann. Mus. Nat. Hung, iii, p. 102 (1905). 



Mansonia arabica, Giles, J. Trop. Med. p. 130 (1906). 



Cidex arabicus, Becker, Denkschr. k. Ak. Wiss. Wein. Ixxi, p. 140 (1910). 



As has often been pointed out, this is a very variable species, particularly as 

 regards the abdominal markings. The palest specimens have the abdominal scales 

 uniformly ochreous, while in the darkest the median pale stripe tends to be reduced, 

 one Hungarian specimen which I have examined showing it on the second segment 

 only. A . caspius may generally be known by the bright fawn-coloured scales of the 

 mesonotum, with two narrow longitudinal stripes of white running the whole length, 

 and by the even scattering of the dark scales over the wing-veins, as well as by the 



