the British Newoptera-Plampennia. 159 



Expanse of wings, $ 8 lines, ? 9-10 lines. 



Occasionally found in woods. The male may be imme- 

 diately separated from all others by the form of the 

 terminal dorsal segment. It is the species to which 

 Mr. Waterhouse's account of metamorphosis will apply, 

 according to his type (See Trans. Ent. Soc. i. 23) . 



3. Raphidia cognata, Rambur. 



Baphidia cognata, Ramb. Nevrop. 438 (1842); Ed. 

 Pict, Nevrop. d'Esp. 53, pi. v. figs. 7 — 9; Hag. Tr. Ent. 

 Soc. ser. 3, v. 497. 



The description is made from an old $ example. 



Head long and narrow, the sides rounded, rather sud- 

 denly constricted behind into a short neck ; closely and 

 evenly punctured both above and below ; shining black, 

 with a smooth median longitudinal reddish line extending 

 from the hinder edge to about the middle of the occiput ; 

 clypeus and labrimi reddish testaceous, fuscescent in the 

 middle ; mandibles reddish testaceous, blackish at the 

 tips ; antennce testaceous in the basal third, afterwards 

 blackish; ocelli moderately distinct, equidistant. 



Prothorax slightly dilated posteriorly, rugose above, 

 blackish, with three indistinct reddish lines behind ; an- 

 terior margin narrowly, and the deflexed lateral margins 

 broadly yellowish ; free posterior portion of the pro-ster- 

 num yellowish. Meso- and meta-nota black; the former 

 with a large yellow spot in the front of the middle. 



Abdomen blackish above, somewhat lurid beneath, the 

 margins of the segments on both surfaces, and a lateral 

 line, bright yellow. In the $ , the penultimate segment 

 is broad, the sides with a deep triangular excision, the 

 lower portion of which is short and somewhat swollen, 

 ending in a short crotchet turned inwards ; from beneath 

 the base of this portion proceeds a longer crotchet, not 

 extending to the apex, and strongly curved inwards at 

 the tip; the penis is short and broad, deeply canalicu- 

 lated beneath ; the terminal segment is somewhat conical 

 when viewed from above, truncated at the apex, scabrous 

 and hairy ; longly triangular when viewed from the side. 



Legs yellowish ; the anterior and intermediate femora 

 with a fuscous line externally; the posterior femora 

 wholly fuscous, except at the apex. 



Wings (PI. IX. fig. 1) nearly similar in form to those of 

 B. xantliostigma : the costal margin narrower at the base. 



