276 MB. Q. brook's eevision of the 



1841. D. lanuginosa, Mc. ibid. -p. 74. 



D. disjuiicta, Nie. ibid. p. 71- 



D. corticalis, Nic. ibid. p. 7^. 

 1862. D. nivalis, Lvbk. Notes on Thys. pt. ii. p. 594. 

 1867. D. Nicoletii, Lubk. Linn. Soc. Trans, p. 299. 

 1871. D. muscorum, (Mc. of) Tullb. Fort, ofver Sv. Pod. p. 148. 



U. mnltifasciata, Tullb. ibid. p. 148. 



D. avborea, Tullb. ibid. p. 148. 



D. marginata, Tullb. ibid. p. 148. 

 1873. D. decemfasciata, Pack. ? Thys. Essex Co., Mass. p. 40. 

 1881. D. pulchella, Ridley, Ent. Mo. Mag. vol. xvii. p. 270. 



jTj/pe. — Antennge about lialf the lengtli of the body ; the three 

 terminal segments usually subequal, but the second may be either 

 a little longer or a little shorter than tlie other two. Colour yel- 

 low, shading off to violet in tlie lighter specimens, to brown in 

 the darker ones ; there is sometimes a brown ring at the tip of 

 the first segment. 



Head yellow, with a broad dark band around the margin as 

 seen from above crossing the eye-patches. The anchor-shaped 

 band on the crown of the head is usually well defined. 



Mesothorax slightly longer than metathoras, with a dark band 

 on its anterior margin whicb runs along the epimera as far as tbe 

 fourth abdominal segment; there is also a strong central basal 

 band not reaching the margin ; there is a similar basal band on 

 the metathoras. 



The first tliree abdoaiiual segments increasing in length, with 

 similar dark basal bands on each ; that on the first shows a little 

 thickening at the extremities ; those on the second and third 

 have this thickening increased to a triangular patch. Fourth 

 abdominal segment not so long as the first three and the meta- 

 thorax taken togetlier, fusiform, with two interrupted bands — one 

 across the centre and one across the basal portion of the segment, 

 sometimes the two bands unite by triangular patches on each 

 side of the median line : this segment is narrower at the base 

 than the mesothorax. Fifth and sixth abdominal segments small, 

 with strong basal bands. 



Spring not passing the ventral tube. Claws strong ; the upper 

 one with a tooth about the centre o£ the inner margin, but there 

 is often another smaller one, and sometimes a very small one on 

 the outer margin. Lower claw lanceolate. Lateral plates lan- 

 ceolate and a little curved ; sometimes the tip of one of these 

 plates is in such a position as to be easily mistaken for a strong 

 tooth on the upper claw. Length Jg inch, width -g-V— sV inch. 



