206 



DOLICHOPID^). 



shorter than the antennae. Fringe of the alulae dusky. Abdomen 

 beneath yellowish, this colour also shining through more dimly above 

 in some of the segments after the first, the hind margin of which is 

 strongly ciliated. The legs with all the coxa yellow, the tarsi dusky at 

 the tip. In the male the intermediate femora pectinated beneath ; the 

 third and fourth joints of the middle tarsi much dilated, and black, as 

 well as the fifth joint and the gradually dilated apex of the second ; 

 the hind tibia with the tip dilated, black ; the hind metatarsus rather 

 broad, armed beneath, a little beyond the middle with two spines, one of 

 which is longer and bent. 

 Eare. (E. I.) 



Genus IX. MACHJERIUM. 

 MACILERIUM, Hal. z. j. v. 351 (1831). Rhaphium p., Lw. 



Antenna articulo secundo transve?'so, tertio elongato attenuato, basi 

 abrupte dilatato ; arista apicali. Hypostoma latum. Proboscis 

 obtusa. Abdomen segmentis quinque, hypopygio maris recondito. 

 Antenna with the second joint transverse, the third elongated attenu- 

 ated, abruptly dilated at the base, the arista apical. Face broad in both 

 sexes. Proboscis protuberant, obtuse, with large palpi. Abdomen of 

 Jive segments in both sexes, the hypopygium of the male almost concealed. 

 Loew has comprised in Rhaphium the single species for which 

 this genus was formed ; and, in fact, there are yet greater differ- 

 ences between some of the groups that remain united under the 

 former genus. 



1. maritimae, Hal. z. j. v. 352 (1831) ; Lw. Viridi-aureum, 

 pedibus flavis, tarsis apice fuscis. Long. 2^ ; alar. 5 lin. 



Gilded-green, with a slight hoary tinge. Face and palpi glossed 

 with white. Antennas shorter than the thorax, third joint very long, 

 arista scarcely half as long as it. Scutellum with two, prosternum 

 with one long bristle, at each side. Wings hyaline ; discal transverse 

 vein oblique, distant by more than its own length from the hind margin ; 

 subapical vein gently curved about the middle. Alulae and fringe pale. 

 Abdomen conical, depressed, the fifth segment a little compressed 

 beneath in the male, embracing and almost concealing the small hypo- 

 pygium, the appendages of which are slight and not apparent externally. 

 The pubescence of the abdomen and legs strong and black. Legs 

 rather short ; coxas with some black bristles, fore pair more hairy ; 

 femora, tibiae, and base of tarsi yellow ; all the tibiae spiny ; hind 

 metatarsus rather longer than the following joint. In the male the fore 

 tarsus is rather longer, with larger onychia. 



Common in sea-side marshes. (E. I.) 



