ENGIDiE. ANISARTHRIA. 61 



The most minute Coleopterous insect with which I am acquainted, 

 scarcely exceeding in dimensions the period which closes this sen- 

 tence : it is found near London, but apparently not very common. 



Sp. 5. minuta. Oblongo-ovata, nigro picea, elytris apici dilutioribus, antennis 



pedibusque pallids rufis. (Long. corp. £ lin.) 

 Tr. minuta. Steph. Catal. 83. No. 887. 



Oblong-ovate, pitchy-black, slightly pubescent, and finely punctured, the elytra 



paler at the apex, the antenna; and legs pale rufescent. 

 More oblong and somewhat larger than the preceding, from which it also differs 



in having the antenna? and legs pale rufescent, and the apex of the elytra 



rather pitchy. 



Slightly larger than the foregoing, but yet truly atomical ; — it 

 occurs near London. 



Sp. 6. trisulcata. Piceo-nigra, tho?'ace obsoletissimz trisulcato, pedibus pallidis. 



(Long. corp. ^ lin.) 

 Tr. trisulcata. Spence MS.?— Steph. Catal. 83. No. 888. 

 Minute, oblong-ovate, deep pitchy-black, punctulate, the thorax with three very 



obscure sulci, the legs pale, the antennas deep black. 

 Like Tr. nana this species has the antenna? black, but it is of a more oblong 



form, and has the thorax very obscurely trisulcate. 



Also a most minute insect, appearing but as a mere speck upon 

 paper ; found near London, in Yorkshire, and I believe likewise in 

 Norfolk. 



Genus CXXXIX. — Anisarthria*, Waterhouse. 



Antennas very pilose, rather longer than the thorax, the basal joint stout, elon- 

 gate, slightly bent, the second rather stout, the six following very slender 

 subclavate, the ninth large obconic, the following minute subquadrate, the 

 terminal one large ovate. Palpi small, the terminal joint ovate, subacute : 

 head broad, slightly emarginate anteriorly: thorax suborbicular, truncate 

 posteriorly: scutellum minute: body convex: elytra entire, broad, dilated 

 laterally. 



Amongst the species of this, the preceding, and the following- 

 genera are some of the most minute coleopterous insects, their atom 

 forms scarcely exceeding, as remarked by Kirby and Spence, the 

 bulk of an ordinary period : " but," as Latreille observes, " to the 



Aw«; inasqualis, Ag0g«v articulus. 



