LATHRIDIUS. 495 



broad depression on each side, much rounded and dihited 

 at anterior angles ; elytra with regular, deep punctured 

 striae. L. | 1. Common. L. minutus, Lin. 



2? J5. Anterior angles of thorax not rounded and 

 dilated. 

 Oblong. Black, rather dull ; antennae and legs brown- 

 red. Thorax nearly quadrate, scarcely broader than long, 

 with an indistinct central furrow in front, base with an 

 impression at each side ; elytra with fine punctured striae, 

 interstices fiat, broad, alternate ones scarcely raised, seventh 

 ridged. Similar to L. minutus but with anterior angles of 

 thorax not rounded and dilated, striae on elytra more shal- 

 low and interstices broader. L. f 1. Eare. 



L. consimilis, Mann. 

 2. Thorax without central furrow ; elytra scarcely 

 broader than base of thorax. 

 A A, Body black. 

 Elongate. Black, dull ; antennae and legs reddish-yellow- 

 brown. Thorax very closely punctured, with a triangular 

 depression in front, transversely impressed at base ; elytra 

 obliquely impressed on each side before middle, with feeble 

 rows of punctures, interstices not raised. L. f 1. Scarce. 



L. carhonarius, Mann. 

 Ji JB, Body yellow-brown. 



a a. Thorax without impression on disc. 

 Elongate, flat. Eeddish yellow-brown. Thorax rather 

 broader in front than long, narrowed behind middle, side 

 border slightly raised, disc rather convex, punctured in 

 wrinkles, disc transversely impressed ; elytra ligliter 

 coloured, witli coarse rows of punctures, interstices very 

 narrow, notched. L. f 1. Not very common. 



L. filiformis, Gyll. 

 h b. Thorax with a small, but distinct and 

 rounded impression on disc. 



Differing from Z. filiformis in being even more linear in 

 shape, with thorax more heart-shaped and less widely 

 margined. Taken in dried Aconite at Eoyal Botanic 

 Gardens, Edinburgh. L. f Hum, Awh. 



JJ, Elytra uneven, with depressions. 



Black, shiny ; antennae and legs rust-red. Thorax ob- 

 long, sides membranous, constricted a little before base. 



