122 AN ACCOUNT OF BRITISH FIIES. 



. . . r.. fM. pMictipes, Staeg. 



A. crasstcorms, Stan. = \ r r ^ o 



\M. Spinicoxa, Zett. 



This is a dark species. The head is yellowish-red ; the palpi 

 are yellowish. Antennse testaceous at the base. Antennas are 

 stout, and in the ^ longer than the thorax; in the ? they are 

 shorter and lanceolate. Head and thorax covered with a gray 

 tomentum. The thorax has a reddish-yellow stripe on each side; 

 these two stripes are broadest in front. The abdomen is yellowish- 

 red (yellow according to Schiner) on the ventral surface, and 

 also on the hinder parts of each segment. The ovipositor and male 

 genitalia are testaceous, and sometimes brown. The wings have a 

 yellowish tinge ; the hind veinlet of the prce-brachial areolet about 

 twice the length of the fore one. The anal does not extend to fork 

 of sub-anal. The legs are yellowish-brown, and fairly long ; tibire 

 and tarsi brown ; fore tibia much shorter than the fore metatarsi. 

 The spurs and spines on the posterior tibiae long. Length 2 to 2^ 

 lin. Fairly common at times. 



j'J/. grata, Mg. 

 A. ornaticollis, Mg. = \M. lugens, Mg. 

 \M. analis. 



This is also a common species. It is testaceous, some almost 

 dark brown. The head is dark brown, and the vertex has a white 

 tomentum. The thorax is also blackish-brown, the sides having a 

 white tomentum. The proboscis and palpi reddish-yellow ; antennas 

 dark brown, yellowish at the base. The abdomen seems to be liable 

 to a large amount of variation, and there seem to be three distinct 

 types of variation : 



(a) Blackish-brown, with small yellowish patches ( — ornati- 



collis) ; 

 (/S) Entirely blackish-brown, with bright incisions (helleren 



Einschnitten) = lugens ; 

 (7) Or blackish-brown, with triangular yellowish patches from 

 the second to the fourth segment, and with testaceous 

 anal segment {= grata). 

 Walker, again, describes his ornaticoUis as having a large triangular 

 blackish-brown spot on each dorsal segment. The legs are moderately 

 long and testaceous ; tarsi brown ; posterior tibire having longish 

 spines; the anterior tibias are much shorter than the anterior meta- 

 tarsi. The wings are transparent and grayish, the costa and its 

 neighbourhood being tinged with yellowish-red. Length i\ to 2% lin. 



