122 PROCEEDINGS OF SOCIETIES. 



*1. excavatum, Er. ; Gilm. ; Redt. trisulcatum, Steph. foveolatum, Alib. 

 yallicuin. limbatum, Mots. 



2. anyustatum, Er. ; Fn.Fr. oblonyum, Gilm. ; Redt. ruyulosum, Alib. 

 Rare. 



3. coarctatum, n. sp. Lineare, subdepresaum, capite thoraceque nigris scabri- 

 culis, elytris fuscis, antennis pedibusque flavis, prothorace transverso postice 

 attenuate intra basim transversim obsolete impresso. Long. ^ lin. 



Elongate linear, rather depressed. Head and thorax black, pubescent, the hairs 

 seeming to spring from distinct granular dots. Head triangular with small eyes, 

 as broad as the prothorax ; mouth prominent ; palpi and antennae light yellow, the 

 last joint of these globose-ovate, the first two joints ferruginous. Prothorax 

 broader than long; truncated in front, the sides rounded, strongly attenuated 

 behind, with the basal angles rounded off, faintly impressed within the hind margin. 

 Elytra nearly linear, covering the abdomen, obtusely rounded in common at the 

 tip ; scarcely broader than the greatest breadth of prothorax, and singly more than 

 three times so long as broad ; intricately stippled and pubescent (as well as the 

 scutellum), and hence rather opaque ; blackish- brown, with the tip paler. Legs 

 ferruginous, femora rather darker. 



Narrower and not longer than Trich. curta. The very brief character given of 

 Tr. pulchella, Alibert, contains nothing to distinguish it from our insect, but its 

 size is considerably greater; and the pulchellum of Gillmeister and Faune Fran- 

 9aise is described as having two separate impressions at the base of prothorax, not 

 observable in ours. Whether it be apterous, as stated of Alibert's insect, is 

 uncertain. 



Rare ; in a farm -yard at Holy wood. 



4. clandestinum, n. sp. Sublineare depressum subtiliter pubescensfusco-testaceum, 

 antennis pedibusque pallide flavis, prolhorace obcordato basi media foveolato. 

 Long, i lin. 



Probably the smallest known Coleopterous insect, being smaller, but especially 

 narrower, than Pt. excavatum. Nearly linear, depressed, finely pubescent, dusky 

 testaceous. Head triangular, as broad as prothorax. Eyes black, coarsely granu- 

 lated. Antennae pale yellow, stout, the intermediate joints paler ; those immediately 

 preceding the club oblate ; the 2nd, 9th, and 10th globose, the 10th twice as large 

 as 9th ; the llth ovate, rather acute. Prothorax with the sides somewhat rounded 

 before the middle, narrowed behind, with the basal angles a little obtuse, an oblong 

 impression, or abbreviated channel, in the middle of the base. Elytra two and a- 

 half times as long as prothorax, one-third broader than the base of it, and nearly 

 of uniform breadth for two-thirds of their length, thenceforth rounded-attenuate, 

 covering the abdomen. Wings perfect, fringed with blackish hairs. Legs pale 

 yellow. 



Taken at Holywood. Also in England, J. Curtis. Seems to be very rare, but 

 from its extreme minuteness and pale colour may easily escape observation. 



Compare the description of Ptilium vittatum, Mots., found in ants' nests at 

 Charkow. 



5. kunzei, Heer; Er. ; Gilm.; Redt.; Fn.Fr.; Mots. lonyicorne, Waltl. 

 spinipenne, Comolli. titan, Newman (?) Not rare about farui-yards. 



Gen. 4. TRICHOPTERYX, Er. ; Redt ; Fn.Fr. p., Kirby ; Heer ; Gilm. ; 

 Alib. Ptilium, Mots. p., Waltl.Acrotrichis, Mots. ; Woll. 



1. curta, Alib.; Gilm. abbreviatella, (Heer?); Er. ; Fn.Fr. nana, Steph. 

 minuta p., Steph. Not rare about farm- yards. 



2. sericans, Heer ; Er. ; Fn.Fr. ; Mots. depressa, Gilm. ; Redt volans, 

 bovina, brevis, Mots. Not rare, with the last. 



*3. pumila, Er. ; Fn.Fr. ; sericans, Gilm. ; Redt pusilla, Steph. (?) 

 4. pyymaa, Er. ; Fn.Fr. paralleloyramma, Gilm. : Redt. chevrolatii, Alib. 

 minuta p., Steph. Rare. 



