Catalogue of British IcJtiicumouidce. 141 



Mtkecerus discolor, Wesm. 



Wesm., Tent., 204, $ , ? ; Mant., 91. 



I took a female of this Mthecerus several years ago, 

 but, from its being fastened on a card, I did not recognise 

 it till I reset it last year. Norwich, September, 1877. 



CBYPTICE. 

 Phygadeuon Marshalli, n. s. 

 Phygadeuon procerus, Gr., I. E., ii. 724, var. 2, $ . 

 Segmentis 2 — 4 fusco- aut nigro-maculatis ; femoribus 

 tibiisque rufis, posticis apice nigris. 



Head not buccated behind the eyes ; mesothorax tri- 

 lobed ; metathorax with two irregular transverse curved 

 lines, supero-medial area not closed at the sides ; head 

 and thorax opaque, finely and closely punctured. Abdo- 

 men cylindrical ; 1st segment but little wider at the apex 

 than at the base ; spiracles placed a little behind the 

 centre, slightly projecting, puncto-aciculate ; 2nd seg- 

 ment about twice as long as wide, remaining ones trans- 

 verse, distinctly punctated, the 2nd the most strongly so. 

 Areolet of wings pentagonal, nervelet, sometimes a trace, 

 sometimes absent altogether ; transverse anal nervure 

 divided below the middle ; legs slender. 



Black ; legs red, coxae black ; middle trochanters 

 brown- stained ; basal joint of hind trochanters black, 

 as well as the apex of hind tibiae and tarsi ; 2nd and 3rd 

 segments of the abdomen red, with a dark transverse 

 fuscous band before the apex, the band on the 2nd 

 broader and transversely subdivided ; 4th, 5th, and 6th 

 segments with a narrow red margin at the apex ; stigma 

 and nervures nigro-fuscous. Male. Length, 6 mm. 



There are two specimens of a male Phygadeuon in a 

 collection which once belonged to the Eev. T. A. 

 Marshall, labelled " P. procerus, Gr., var. 2, n. sp." 

 They agree very well with Gravenhorst's description of 

 this variety. Taschenberg says, in his revision of the 

 Gravenhorstian species, that var. 2 is wanting ; it differs 

 from Taschenberg's description of the genuine procerus 

 in having the areae of the metathorax incomplete, the 

 other having complete areas, and the abdomen is diffe- 

 rently coloured ; whilst, according to Gravenhorst, the 

 post-petiole is wider than in P. Marshalli. 



Taken at Bugbrooke, near Northampton. 



