256 Mr. E. Saunders' Si/nojysis of British 



tibiae irregularly denticulate in the ? , in the <^ with spinose 

 hairs. 



Length 4 — 6 mill. 



Common, generally in sandy banks, &c. 



2. luperus, Shuck. Foss. Hym. p. 186. 



Differs from the above in the 3' by having the mandibles 

 black, with only the apex reddish, the antennae entirely 

 black, and the head and thorax more strongly punctured. 

 ? differs from minutus in the black mandibles and the 

 dark tegulae and tubercles, the rather more shining 

 thorax, the much more sparsely punctured 2nd segment 

 of the abdomen, the more acute apical segment, and the 

 almost black legs. 



Length 5 — 7 mill. 



Hah. — Widely distributed ; Southwold, near Eeigate, 

 Hayling Island, &c. 



3. tristis, V. d. Lind. Nouv. Mem. Acad. Brux. v. p. 78. 

 Larger than either of the preceding, and differing in 



having the division between the mesothorax and the 

 scutellum consute. The head and thorax in the 3 are 

 closely and rugosely punctured ; the tegulae in front and 

 the tubercles pale ; metathorax very rugose, pilose at the 

 sides ; abdomen finely punctured, and with a scattered 

 short grey pubescence ; anterior tibiae in front, the tarsi 

 and the base of all the tibiae, pale yellow. 



$ almost as large as Ce))tonns unieulor, entirely black, 

 except the calcaria, and sometimes a piceous spot 

 at the base of the tibi^, and the basal joints of the tarsi, 

 which are generally more or less piceous ; head rather 

 strongly punctured ; thorax with scattered punctures and 

 very irregular longitudinal striae ; the division between 

 the mesothorax and scutellum very strongly consute ; 

 abdomen very finely punctured, and with short grey 

 hairs, apical segment strongly and largely punctured, and 

 occasionally somewhat piceous. 



Length 6 — 8 mill. 



Hah. — Common generally. 



Passalcecus, Shuck. (PI. VIIL fig. 26). 

 Foss. Hymen, p. 188. 

 This genus resembles Diodontus in general aj^pearance, 

 but has the abdomen more elongate and cylindrical, the 



