196 SELANDRIA FLAVENS. 



summer brood there issued a second generation in the 

 beginning of August (cf. Vollenhoven, 1. c.). 



The larva described by Stein under the name of Servo, 

 (1. c.) as feeding on Garex ac^Ua, Juncus effusus, &c., 

 Scirpus palustris, &c., if really that of Serva, agrees 

 very closely with that of Sixii in every respect, and has 

 the same habits. Euryprodus geniculosus, Gr., is 

 recorded as a parasite. 



A common Scotch insect, but not nearly so abundant 

 as Serva. 



Continental distribution : Sweden, Germany, Hol- 

 land, France. 



3. SELANDRIA FLAVENS. 



Tenthredo Havens, King, Berl. Mae., viii, 47, 8 ; Htg., Blattw,, 

 284, 54 ; Evers., Bull. Mosc., xx, 33, 

 18. 

 puella, Fall., Mon. 



Selandriaflavescens, Thorns., Opus., 291, 2; Hym. Sc., i, 237, 3 

 Cam., E. M. M., xiii, 198 ; Fauna, 24, 

 3 ; Andre, Species, i, 293 ; Cat., 36,* 3. 



Black, shining, almost glabrous ; mouth, tegula;, pronotum, abdomen, 

 antennas at base and legs yellow, except the coxa3, which are black. 

 Wings yellowish-hyaline, apical half of costa and stigma black ; 

 nervures yellowish at base, black at the apex. The joints of antennae 

 distinctly separated. 



Length 3 lines. 



Ab. a. Base of antennse and mouth black. 

 ,, b. Pronotum black. 



The femora are sometimes lined with black, the 

 base of abdomen is often blackish or fuscous, and the 

 stigma dilute fuscous. 



Easily known from the preceding species by the form 

 and position of the eyes and by the less pilose body. 



The 3 in the form of the body resembles Serva ; 

 the legs are black at the base. 



Not a common species. I have taken it rarely in 

 marshy places in Clydesdale. 



Continental distribution : Sweden, Germany, France, 

 Russia. 



