1899.] 171 



6 (5) Tarsi plain. 



7 (8) Scutellum with two setiB 2. umbrosajhw. 



8 (7) Scutellum with four setae - 3. pudica,M.gn. 



9 (2) Legs black. 



10 (11) Legs quite black, scutellum with four setfe 6. ciliata, Mgn. 



11 (lu) Legs with fore knees red, scutellum with two setse 7. biseta,'Lyf. 



12 (1) Palpi pale 8. albipes,'Eh\. 



Sp. 1. — C. PUBEEA, L. 

 Head subglobose, occiput thick ; eyes small, face prolonged ; frontal stripe red 

 in front, grey behind; antennae dark brown, with long haired arista; palpi black, 

 with one or two long apical setae ; proboscis black ; thorax black, dusted with grey 

 tomentum, and marked with three white stripes ; the sides as well as coxae and 

 metanotum white ; scutellum black, with four long setae ; wings flaTescent, with 

 third and fourth long veins parallel ; abdomen black, with thick incurved apex in 

 the male, and large complicated hypopygium, lanceolate and pointed in the female ; 

 halteres yellow ; legs with femora black, and tibiae and tarsi testaceous ; each joint 

 of the latter being marked on the under-side with a bright black spot, more distinct 

 in the male than female. Length, 8 — 9 mm. Common. 



Sp. 2. — C. UMBROSA, Lw. 

 Very similar to the last ; palpi and antenn£E black ; arista long haired ; tibiae 

 and tarsi testaceous, the latter unspotted ; scutellum black, with only two long setae ; 

 wings with a little nigrescence or nebulosity upon the extremities, not sharply 

 defined, but extending from the termination of the second long vein, to the end of 

 the fourth. This species may at once be known from C. pubera by the unspotted 

 tarsi, the two setae on the scutellum, and the dark markings on the ends of the 

 wings. Length, 7—8 mm. Not common, local. 



Sp. 3.- C. PUDiCA, Mgn, 



geniculata, Ztt. 

 This species has been sometimes confounded with one or other of the preceding, 

 though it is very distinct. Meigen's description is so clear (though short) that I 

 will quote it. He says, " it resembles C pubera, but is always smaller ; the legs are 

 testaceous and bristly ; the femora are brown with red ends, and ciliated beneath 

 with grey hairs ; the tarsi are without black spots." To this may be added, the scu- 

 tellum has four setae as in C. pubera, and the arista is more shortly and thickly 

 haired than in either of the above species. Length, 7 — 8 mm. Not common. 



Sp. 4.--C. EUPIPES, Mgn. 

 Thorax shining black, with a white spot in front ; abdomen black, with a brown 

 tinge ; legs entirely rufous, with the exception of black spots upon the tarsal joints ; 

 wings uncoloured. This fly was sent by Dr. Leach to Meigen, and, according to 

 Curtis, is in the British Museum. Length, 6 mm. 



Sp. 5.— C. EUFIMANA, Mgn. 

 Shining black ; frontalia white, with forehead red ; face white ; antennae and 



