156 ^Decenibor, 



This little insect has a very considerable resemblance to the gall- 

 making Nemaius gallicola {Vallisnierii) , but it is a true Dineura ; cer- 

 tainly it cannot by regarded as a Blewiocampa, in which genus Thomson 

 has placed D. parinila. The present species comes near D. parvula 

 (judging by the description) and D. despecta. From the latter it 

 is readily known be its much longer antennae (Hartig gives their 

 length as "lang wie Kopf und Thorax"), while parvula has the 9th 

 segment pale yellow above, and the stigma unicolorous. 



Taken in England by the Rev. T. A. Marshall. 



I have never seen a specimen of despecta, but I have reason to 

 believe that it is British, as the late Mr. Charles Healy told me that 

 he had found in the London district, a saw-fly larva mining the leaves 

 of the buttercup : this being the habit of despecta, according to Kal- 

 tenbach (Pflanzenfeinde, p. 9). 



HOPLOCAMPA GALLICOLA, Sp. n. 



(? . Antennse a little longer than the abdomen, fuscoua, paler on the under-side, 

 the base of the Ist joint entirely testaceous ; the 3rd joint a very little longer 

 than the 4th, the rest of equal length and thickness ; the 9th conical at the 

 apex. Head globular in front, the face below the antennae pale white ; the apices of 

 the mandibles piceous ; the vertex faintly punctured. Thorax black, the meso- 

 notum smooth, shining ; the edge of pronotum, pleurse, and sternum pale testaceous. 

 Abdomen with its doi'sum black, pale at the junction of the segments ; the anal 

 lobes and belly testaceous. Legs pale testaceous, the apex of posterior tibiae and the 

 tarsi fuscous. Wings hyaline, the nervures and costa pale fuscous ; the tegulre and 

 stigma pale testaceous 5 the marginal nervure received in the apical quarter of 

 the 3rd submarginal cellule ; the 1st submarginal cellule nearly square ; about 

 half the length of the lower part of the 2nd, which itself is a little shorter than the 

 3rd, on its lower side, and considerably shorter on the upper. The 1st recurrent 

 nervure is received not far from the Ist submarginal nervure ; the 2nd a little in 

 front of the 3rd. 



Length, 2 lines ; alar exp., 4 lines. 



Not to mention other differences, II. gallicola may at once be 

 known by the testaceous pleurae from the black species hitherto 

 described. Our three species of this group may be distinguished as 

 follows : 



a. Pleurae black. 



Belly black ; antennae and edge of collar testaceous.. .. rutilicornis, Kl. 

 Belly testaceous ; antennae and collar black chri/sorrhaea, Kl. 



b. Pleurse testaceous. 



Belly, antennae, and edge of pronotum testaceous gallicola, Cam. 



This interesting species was bred by Mr. Ed. Parfitt, of Exeter, 



