160 [July. 



NEUROTOMA 3IANDIBULARIS, Zadd., S, FEOM THE NEW FOREST. 



A SAW-FLY NEW TO BRITAIN, 



AND IN THIS SEX NEW TO SCIENCE. 



BY THE REV. F. D. MOEICE, M.A., F.E.S. 



A splendid addition to the British list of Saw-flies has heen made 

 by Mr. Donisthorpe, who has for some time been kind enough to 

 resei've for me any specimens of these insects which he has come 

 across in looking for Coleoptera, &c. Among a small batch which he 

 lately gave me from the New Forest was a ^ , which, I saw at once, 

 agreed with nothing known to me, unless it might possibly be a black- 

 faced aberration of Lyda erythrocephala, L. But on findmg that the 

 front-legs as well as the face were destitute of yellow marks I felt 

 that this was iniprol)al)le ; and a more careful examination presently 

 showed that its generic characters were those not of a true Lyda at 

 all, but of a Nenrofoma. The front tibise proved to be unspined — 

 I thought at first that I had seen a spine, but I must have been 

 looking at the middle pair, for certainly the front pair are unarmed 

 — and the intercostal nerve was simple, i. e., not apically branched. 



Among the described Palaearctic species of the genus there is one 

 only to which it can possibly l)e referred, viz., Neurotoma (subg. Gongy- 

 locorsia, Knw.) mandihidaris, Zadd. And not only is this species new 

 to this country (" Hitherto known only from France and Gennany. 

 Eare." Konow, Chalastogastra, p. 179), but its J is new to science. 

 I am therefore half afraid to assume responsibility for recording the 

 occurrence of this ^J in our own country, but its characters agree so 

 precisely with those of Zaddach's insect that I will venture. The 

 following description made by myself, actually from the ^ before me 

 (and not from comparison of it with descriptions of the $ ), will be 

 felt, I think, to justify my boldness. 



NeTJEOTOMA (GrONGYIiOCOESIA) MANDIBULAEIS, Zadd. 



Maris adhuc ignoti descriptio. 



Atro-cyanea, mctallescens, scutello viridi-suhaurato, clypco immaciilato, 

 mandibulis flavis, tihiis posticis dimidio hasali alho-lineatis : antennis 20-articulatis 

 articulo 3 tio trihus sequeiitihus siviul sumptis suhsequali ; capite et mesonoti lobis 

 lateralibus rugose fortiter punctatis, huius loho medio polito, nitidissimo, impressione 

 mcdiana profunda : alis pure hyalinis, nervis ac stigmate fuscis, huius basi extrema 

 nonnihil decolorata. 



Bhie-black, very shining, with metallic reflections, scutelliim with a tinge 

 of golden-green. Mandibles orange-yellow, face absolutely immaculate. Basal 

 half of hind tibitc narrowly streaked with white exteriorly. Antennse 20- 

 jointed, the third joint about as long as the three following together. Head 



