i 361 ) 



XVII. Further additions to the Rev. T. A. Marshall's 

 Catalogue of British Ichneuinonidae. By John B. 

 Bridgman, F.L.S. 



[Read September 7th, 1887.] 



The additions to the Rev. T. A. Marshall's list of British 

 Ichn&wmonidce appear interminable : new species and 

 species new to Britain are constantly occurring. Since 

 my last paper Mr. G. C. Champion very kindly sent me 

 a box of well-set ichneumons, most of which came from 

 Aviemore, and contained several species new to our 

 list. Professor C. G. Thomson has kindly examined my 

 species of Exochus, and the species of Ichneumon lucta- 

 torius group, among which were several of his new 

 species. I am also indebted to many other entomolo- 

 gists for insects sent to me. 



Ichneumon rufidorsatus, n. s. 



Mesothorace supra, scutello, abdominis basi, pedibusque runs, 

 coxis nigris ; annulo antennarum rufo. 



Head rather remotely punctate ; puncUires not deeply im- 

 pressed ; autenme rather stout, slightly thickened between the 

 middle and the apex, the latter attenuate, scarcely more than half 

 the length of the body ; 1st joint of flagellum almost twice as long 

 as wide, 4th quadrate ; head behind the eyes not narrow. Thorax 

 scarcely narrower than the head ; mesonotum somewhat shining, 

 punctate, punctures not very close ; scutellum shining, with 

 scattered punctures; metathorax subopaque, very finely rugose, 

 with three superior areae ; supero-medial area quadrate ; costse 

 fine ; spiracles almost linear. Abdomen scarcely wider than the 

 head and thorax, elongate-ovate ; Sind, 3rd, and 4th segments 

 almost the same width, transverse ; the 1st segment almost 

 smooth and shining, obsoletely reticulate, with a few scattered 

 punctures at the apex ; remaining segments closely and finely 

 punctate ; the gastrocceli transverse, not deeply impressed, the 

 space between them a little narrower than the middle area of the 

 post-petiole ; aculeus distinctly projecting beyond the 7th segment. 



TRANS. ENT. SOC. LOND. 1887. — PART IV. (DEC.) 2 C 



