116 COLEOPTERA. 



subquaclrate, emarginate scutellum ; by the long abrupt notch 

 or emargination on the inner edge of the apical joint of the 

 antennas ; and by the intermediate tibiae being shorter than 

 the four basal joints, taken together, of the intermediate 

 tarsi. 



Mordella has the scutellum narrow, almost semicircular ; 

 the apical joint of the antennae entire ; and the intermediate 

 tibiae very nearly as long as their tarsi. 



Probably very generally mixed up in our collections with 

 Mordella fasciata, Fab., to which it bears a very close 

 resemblance ; the superior size, however, of the species now 

 under consideration, and the differences above pointed out, 

 will at once lead to its recognition. 



Found with Mord. fasciata in the New Forest, Hamp- 

 shire, and, as it is not rare in Sweden, it may be expected to 

 occur throughout Britain. 



33. Scolytus Pruni, Ratzeb. ; E. W. Janson, Proc. Ent. 



Soc. 4. July, 1859, Zool. 6656 (1859). 

 Scolytus Pruni, Ratzeb. Forst. Ins. i. 186, tab. x. f. 

 5 (1837); Redtenb. Faun. Austr. Ed. i, 361 (1849), 

 Ed. ii. 838 (1858). 

 Abdomen beneath without tubercles or teeth. Readily 

 distinguished by the exceedingly fine and sparse puncturing 

 of the prothorax, and the broad interstices of the elytra, on 

 each of which a single row of fine punctures is barely per- 

 ceptible even under a strong lens. 



I found this insect, in the month of June, in the bark of 

 the trunk and limbs of a dead apple tree, near Highgate : 

 S. rugulosus occurred in the smaller branches of the same 

 tree. 



34. Donacia obscura, Gyll ; Waterhouse, Proc. Ent. Soc. 



7 Nov. 1859. 

 Donacia obscura, Gyll. Ins. Suec. iii. 654, 6 (1853) ; 



