194 Rev. T. A. Marshall's monograph of 



pillar. The elongate brown cocoons are usually 

 agglomerated, and covered with a common web, of 

 thin texture and paler colour. Frequently bred both 

 here and on the Continent : first by Nees v. Esenbeck, 

 June 28th, from Calymnia trapezina, L., in Franconia ; 

 by Bouche from Hylophila prasinana, L. ; in Holland, 

 according to Van Vollenhoven, from Noctua ditrapezium, 

 Bork., Tortrix podana, Scop., and T. corylana, Fab.; in 

 England by Dorville from Nej^hopteryx spissicella, Fab. ; 

 by Billups from Einchnopteryx radiella, Curt. ; by Elisha 

 from Depressaria alstroemeriana, Clerck ; by Porritt from 

 Tortrix heparana, Schiff., or ribeana, Hiib., and very 

 numerously from Hyponomeuta evonymellus, L. ; by 

 Bignell from Hydrcecia petasitis, Doubled., and Tortrix 

 viridana, L. ; and by Scott from Vcmessa Atalarita, L. 



2. Macrocentrus marginator, Nees. 



Bracon marginator, Nees, Mag. Ges. Berl., 1811, p. 14 ; 

 Rogas marginator, Nees, Mon., i., 205 ; Wesm., 

 Nouv. Mem. Ac. Brux., 1835, p. 176 ; Ratz., 

 Ichn. d. Forst., ii., 65; M. marginator, Hal., 

 Ent. Mag., iii., 138, <? ? . 



Rogas nidulator, Nees, Mon., i., 204, S^ ? . 



R. ohscurator, Ratz., Ichn. d. Forst., ii., 65, ? . 



Stouter than Sp. 1. Black, shining ; palpi testaceous or dark, 

 more or less; the maxillary elongate, pilose. Antennae <? ? longer 

 than the body, about 45-jointed. Thorax and scutellum faintly 

 punctulate ; metathorax rugose. "Wings fiisco-hyaline ; stigma 

 fuscous, paler at the base, ovate-lanceolate, narrower than in Sp. 1 ; 

 nervures, radix, and squamulae fusco-rufescent ; 2d cubital areolet 

 elongate, not attenuated exteriorly. Legs rufous ; upper tro- 

 chanters, 4 anterior coxae, and apex of the hind pair, black ; hind 

 tibiae and tarsi more or less dark, except at the base ; in large 

 specimens, black ; all the tarsi dark. Abdomen shorter and 

 broader than in other species ; segments 1 — 2 rugulose, sometimes 

 very faintly ; 2d smooth at the apex, margined at the sides as far 

 as the middle ; 3d slightly rugulose at the base, or sometimes 

 smooth; the rest smooth and shining. Terebra longer than the 

 body. ^ ? . Length, 2^ — 4J ; wings, 5 — 8^ lin. 



Var. a. Palpi black ; 2d segment smooth. Bogas 7iidulator, 

 Nees. ^ 2 • 



Var. /3. Antenna; rufous in the middle. $ . 



