76 Eev. T. A. Marshall's monograph of 



vertically truncated, slightly excavated behind. First abdominal 

 segment striolated ; petiole about half as broad as the apex of the 

 condylus ; tubercles medial, salient. 



I have only a ? specimen, taken in Northamptonshire, 

 which is very distinct owing to the form of the terebra ; 

 the legs are coloured as in Euthe's variety. The 

 dividing nervure between the 1st cubital and pras- 

 discoidal areolets is so faint as to be discerned with 

 difficulty. A specimen exists in the British Museum, 

 ticketed in the handwriting of F. Smith, "the larva 

 from a living Timarcha coriaria" F. 



4. Perilitus brevicollis, Hal. 



Perilitus brevicollis, Hal., Ent. Mag., iii., 35, 2 . 



Microctonus retusus, Euthe, Stett. Zeit., 1856, p. 298, $ . 



5. Black; head, antenna? at the base, and fore legs, rufo- 

 testaceous ; 4 posterior legs piceo-fulvous, their tibiae darker at the 

 tips ; hind coxae fuscous ; tarsi blackish ; occiput, together with the 

 middle of the front and of the vertex, fuscous ; abdomen pitchy- 

 black ; base of the 1st segment pale. "Wings subhyaliue, nervures 

 and stigma fuscous ; radial areolet ovate-lanceolate, ending rather 

 nearer to the tip of the wing than to the stigma. Labial palpi 

 3-jointed. Terebra curved, somewhat less than half the length of 

 the abdomen. $ unknown. Length, If ; wings, 3| lin. 



Stouter than P. cerealium (sp. 7), and twice as large; easily 

 distinguished by its whole structure. Antennae 26-jointed, hardly 

 shorter than the body, the 1st joint rufescent. Orbits, face, and 

 mouth rufous. Maxillary palpi with the apical joints not remark- 

 ably shorter than the preceding ; joints of the labial palpi subequal 

 in length. Mesothoracic sutures ending in a wide thickly punctate 

 depression, in the middle of which is a distinct longitudinal line ; 

 posterior angles near the base of the scutellum gibbous. Meta- 

 thorax very short, vertically truncate, rugose, reticulated. First 

 abdominal segment elevated posteriorly, much stouter than in the 

 other species, obconic, rugulose, the apical angles longitudinally 

 striated ; tubercles medial. Valves of the terebra fusco-ferru- 

 ginous. 



Unknown to me ; only two examples seem to have 

 occurred (one in North Ireland, taken by Haliday, the 

 other in Germany by Euthe) until Capron discovered 

 three females at Shiere. 



