7. SARGUS 171 



Bridge, and in Ireland from Phoenix Park, Dublin, where Colonel 

 Yerbury caught a male sitting on wet mud in a stream. It is obviously 

 an autumn species, as my dates extend only from August 8 to September 

 27. The larvse are said to live in cow-dung, but Ptcaumur's reference may 

 belong to S. Jlavipes. It is recorded from Central and Southern Europe, 

 though its occurrence at Nethy Bridge seems to show that it may occur 

 in Northern Europe. 



Synonymy. — This species was for a long period known as Sargiis Eeavmuri 

 Meig. (1804), and was named in commemoration of Reaumur, who described the 

 metamorphoses of what was supposed to be this species in 1741, but Walker in 1851 

 resurrected Scopoli's (1763) name of ^^ bijmnctata." _This_ revival is not entirely to be 

 regretted, because Reaumur's association of his species with cow-dung makes it most 

 probable that he had S. flavvpes before him. 



2. S, albilbarbus Loew ? Legs all orange in both sexes. Abdomen 

 brilliant green with the short pubescence on the disc all greyish brown. 



A handsome species very much like S. hipunctatus. 



$. Very much like S. hipunctatus but rather smaller, and on the other hand 

 rather larger than S. Jlavi^yes, and with the wings more darkened than in 

 either. Frons less arched in profile and more produced near the white spots, 

 broadly bare and brilliant green on the middle part (as in S.flavi2)€s) from the 

 ocelli almost to the white spots, and with the side pubescence shorter, black, 

 almost erect, and more sparse than in S. hipnmctatus ; pubescence on the 

 vertex and the top of the occiput shorter, and all the pubescence on the 

 ocellar knob black, but the tuft behind the vertex tawny ; ocellar knob 

 slightly more forward than in S. hijywictatus but the ocelli in about the same 

 relation to each other ] the white spots on the frons are rather large and are 

 very conspicuous ; frons below these white spots brownish black ; face 

 blackish with only short black or greyish black pubescence, but in the single 

 British specimen the face is not in good condition for describing ; pubescence 

 on the sides of the mouth, jowls, and back of head very short, inconspicuous, 

 and yellowish. Eyes with the front facets not distinctly enlarged. Antennre 

 with the basal joint shining black, the second joint with some long black 

 dorsal hairs, and the third joint brown. 



Thorax brilliant green, much more finely punctate than in »S'. hipwictatus, 

 and with the longer jmle hairs much less numerous and not extended to the 

 front part. Humeri and top margin of the mesopleurse hardly orange. 

 Scutellum not at all orange beneath. 



Abdomen brilliant green, not so long as in S. hipunctatus nor so constricted 

 at the base, and consequently hardly at all club-shaped even though the fifth 

 segment is the widest ; sixth segment rather purple, and the end part of the 

 fifth segment rather coppery ; the abdomen is more thickly punctate than 

 the thorax but not enough to dull it, nor is there any trace of depressed 

 golden orange pubescence, but the whole of the upper side (except for the 

 long pubescence at the sides and on the basal segment) bears short (not very 

 short) depressed inconspicuous brownish pubescence, instead of the coarse 

 stubby black pubescence which occurs in S. Jlavipes, or the shorter incon- 

 spicuous pubescence of *S'. hipunctatus ; the longer dull yellow pubescence 

 about the sides and on the basal segment is rather inconspicuous, and 

 becomes shorter and more orange about the sides of the fourth segment, but 

 the pubescence on the sides of the fifth and sixth segments is black and 

 more bristly. 



Legs with the anterior tarsi all orange, but the last three joints (and the 

 second joint indistinctly dorsally) darkened. 



_Wings with a much more conspicuous blackish tinge about the discal cell, 

 which diffuses itself all round over nearly all the wing except the base ; 

 basal third of the costal and subcostal veins orange. Thoracal squamae 

 more orange. 



