202 TAXONUS EQUISETI. 



of tibiae and tarsi (except the extreme base of tlie joints) black ; four 

 anterior tibiae and tarsi pale in front, posterior trochanters white. 

 Wings hyaline, stigma and nervures black ; tegulse black. 

 Length 4| lines. 



This species differs from all the other forms in the 

 hind wings having two middle cellules, while in the 

 c? the nervures are at the edge of the wings. They 

 also diverge from them in the punctured scutellum and 

 pleurae, the lower part of the pronotum, too, being 

 ridged and projecting. It is also the largest species 

 in the genus. 



The c? has the abdomen bluntly ridged, and the red 

 band is smaller (as a rule) and more irregular at the 

 edges. In both sexes the black on the legs varies in 

 extent. 



Agrorum does not appear to be a common species. 

 Stephens (if his specimens were correctly identified) 

 records it from Birch Wood and Devonshire. I have 

 myself taken it on the Carron, not far from the Dornoch 

 Frith. 



It appears to be not uncommon on the Continent, 

 being found in Sweden, Germany, Holland, France 

 and Russia. 



2. TAXONUS EQUISETC. 

 Plate XI, fig. 7, Scotch variety of $ . 



Tenthredo equiseti, Fall., Acta, 1808, 60, 20. 



bicolor, King, Berl. Mag., 219, 181 ; Htg., Blattw. 



298, 3 ; Evers., Bull. Mosc., xx, 43, 2. 

 coxalis (Klug), Htg., Blattw., 298, 4 ; Evers., 1. c., 

 44,3. 



sticticus, Klug, Berl. Mag., viii, 218, 180; Htg., 



Blattw., 298, 2. 



bizonata, Zett., Ins. Lapp., 344, 24. 

 Allantus Ucolor, Ste., 111., vii, 71, 43. 

 Taxonus bicolor, Tasch., Hym. Deut., 17. 



pratorum, Thorns., Opus., 290, 2. 



equiseti, Thorns., Hym. Sc., i, 234, 2 ; Cam., E. M. M., 



xi, 129, var., E. M. M., xiii, 196 (lar.), 

 Fauna, 19, 2 ; Andre, Species i, 337, 

 pi. xx, fig. 3 (im.) ; Cat., 42,* 6. 



sticticus, Andre, 1. c., 337 ; Cat., 42,* 5. 



