1911.] 147 



a synonym of fulvipes, v. Eoser, is obvious to any one ; all that von Roser pub- 

 lished to enable any one to recognise his species were the following- words, 

 " nigra nitida, capite pedibusquc fulvis ; alis hyalinis ■" this might apply to 

 hundreds of species of Diptera, but by no possible chance to any species of 

 Chlorops, so naturally his species remained unrecognised. To accept this as a 

 sufficient descrijition of a Chlorops entitling the name to priority is to reduce 

 the study of Entomology to a farce. 



*Chlorops planifrons, Lw. — Col. Yerbiuy caught a male of this species at 

 Clifford's Castle (Herefordshire), on July 28th, 1902, and a female at Pembridge 

 (Herefordshire), on August 15th, 1902. It may be known by its large black 

 third antennal joint, with the arista whitish, the dull black thoracic stripes, and 

 the large frontal triangle colovired somewhat as in triangularis, Beck. 



*Chlorops hypostigma,'M.g. {miiuita, Lw.). — This is a comparatively connnon 

 species, and I have met with it in numerous localities. It may be known by its 

 small size (about 2 mm.), the yellow corners to the frontal triangle, the shining 

 thoracic stripes, and the black and fairly large third antennal joint. 



^Chlorops serena, Lw. — I have seen specimens from Herefordshire, Cam- 

 bridgeshire, and Suffolk, it belongs to the group with black third antennal 

 joint, and no sharply marked black sternopleural spot. I do not accept the name 

 calceata, Mg., for this species because Meigen's desci'iption does not agree, and I 

 do not believe that the sjjecimens in Winthem's collections are those upon which 

 Meigen founded the species, moreover, I know of specimens answering to 

 Meigen's description of calceata, which much resemble hypostigma, Mg., but 

 are distinct. 



*Chlorops triangularis, Becker. — This species occurs in the New Forest 

 (Hampshire) ; Mr. Verrall caught four specimens at Lyndliurst in June, 1895, 

 and it has been taken by Dr. Sharp and Mr. C. G. Lamb. The black third an- 

 tennal joint has a whitish arista, the sternopleural spot is not black, and the 

 dark part of the frontal triangle is divided into two parts — an indefinite spot 

 about the ocelli, and a triangle at the apex. 



* Chlorops interrupta, Mg. Qiirsuta, Lw.). — I have seen three specimens of 

 what I believe to be this species, a male I cavight myself at Cornbury Park 

 (Oxfordshire) in July, 1904, and two specimens taken by Mr. C. G. Lamb at 

 Wells (Somerset) in September, 1901. The pale third antennal joint and 

 sternopleural spot and the pale frontal triangle with a dark central line help 

 to distinguish the species. 



Chlorops Iseta, Mg. — I have not seen a British specimen of this species with 

 which C. discicornis, Lw., is said to be identical. 



Chlorops cinctipes, Mg. — This is a very doubtful species, certainly not a 

 Chlorops, and had better be struck out of the List (v. Diplotoxa limhata, p. (?). 



Chloropisca circumdata, Mg. — This is the name under which C. ornata, Lw. 

 {nee Mg.), should be known. I consider the identity of C. notata exti-emely 

 doubtful, and though now given by Becker as the correct name for this species 

 in 1902, after an examination of the types he came to the conclusion that they 

 did not belong to the genus Chloropisca, 



