DUEHAM DIPTEEA. 289 



XXXIII. 483. 



4 (5). Abdomen with dark tessellations. 



(2 191. uliginosa, Fin.) 



5 (4). Abdomen with white spots. (2192. pilchella, Lw.) 



6 (1). Palpi black, or with the extremity only white. 



7 (8). Hind metatarsus of male thick, and scarcely longer 



than the second tarsal joint. 



(2190. crassiuscula, Lw.) 



8 (7). Hind metatarsus of male not much thickened, and 



more than twice as long as the next joint. 



(2188. liiorea, Fin.) 



484. Fucellia, Dsv. 



1 (4). Legs entirely black. 



2 (3). Costa spined ; setula large and distinct. 



2193. Fucellia fucorum, Fin. 

 Abundant on the shore about high-water mark. 



3 (2). Costa without spines ; setula absent. 



(2195. muse aria, Ztt.) 



4 (1). Legs with the tibiae pale or brownish ; costal spines 



few and small ; setula present. 



2194. Fucellia maritima, Hal. 

 Hesleden shore, 2 $ and 4 ?, June- August, 1900. 



Family XXXIV.— CORDYLURID^E. 



As this family seems to be specially strongly represented 

 in the north of Europe, we have probably many more species 

 than those as yet recorded for Britain. The following tables 

 are taken chiefly from Th. Becker's Scatomyzidae, which is 

 almost the same as Cordyluridae in Verrall's list, but contains 

 in addition a number of Continental genera and species not 

 yet recorded in this country. Those who read German should 

 get Becker's monograph, published in the Berlin Entomolo- 

 gical Journal for 1894, but which can be had separately from 

 W. Junk. 



s 



