The internal lobe of the maxillae assumes a more perfect cha- 

 racter than usual in Opatrum, being horny and bifid at the 

 apex like that of Blaps, which genus it slightly resembles in 

 other respects. 



There are only two species of the true Opatrum inhabiting 

 Britain, both of which live in sandy situations. 



1. O- sabulosum Linn. Faun. Suec. 150. 456. — Panz. 3. 2. — 



Sam. pi. 2.f. 8. — rugosus DeG. 



Dull black, very thickly and minutely punctured. Thorax 

 broadest at the base. Elytra covered with minute warts, 3 

 waved elevated lines on each, with a few shining spots down 

 each side, and a row next the suture. 



Taken the end of April and May at Coomb-wood, Bungay 

 in Suffolk, in a gravel-pit at Lakenham near Norwich, and 

 the middle of July and in September at Dover. 



2. O. tibiale Fah.—Curt. B. E. pi. 319.— Panz. 43. 10. 

 Found as early as March in Hants ; the end of April in 



gravel-pits and rabbit-warrens at Great Witchingham, Nor- 

 folk, where the plant* represented in the plate was growing, 

 also the middle of May on the sandy cliff at Southwold, Suf- 

 folk, in abundance ; and on the sand-hills near Swansea. 



There are two other insects which may be here recorded, 

 one named 



3. O. ? Marshami Steph. ; — the other 



4. O. ? obsoletus (Tenebrio) Marsh, p. 475. 2. 



" Black, thorax excavated before, truncated behind, elytra 

 striated, obscurely rugose. Length 5 lines. 



"Description. Antennae filiform, 11 -jointed. Thorax slightly 

 convex, roughly punctulate, excavated before in the form of 

 a lunule, truncated behind. Elytra obscurely striated and 

 rugose. Body beneath deep black, and rather shining." 



The plant is Peltidea canina (Ash-coloured ground Liver- 

 wort). 



* In the Entomological Transactions, the late Rev. J. Barrel stated, that he 

 found 0. iiiJafeinabundance on the Lichen rangifcrinus .--not understanding crypto- 

 gamous plants, I might have misnamed the Lichen I found at Great Witching- 

 ham, for I now feel convinced that it was the Peltidea canina. 



