KONGL. SV. VET. AKADEMIENS HANDLINGAR. BAND. |7. N:O 4. 105 
B. arcuato SoLsKY affinis, sed signaturis pallidis obscurioribus, ferrugineis, prothorace nigro-piceo, elytris 
circa scutellum haud nigris striaque dorsali parum punctata facillime distinguendus. — Caput (fig. 17 b) 
elongato-ovatum, angustum, prothorace fere longius, nigro-piceum, nitidum, fronte convexiuscula, lzevi, tempo- 
ribus oculorum diametro 2xquilongis, ore late rufo-piceo; palpis rufo-ferrugineis. Antenne elongate prothoracis 
basin superantes, tenuiter pubescentes, nigro-fusce, articulis 3 primis totis, 4:o basi ultimoque ferrugineis, 
primo longo oculorum medium superante, 2:o 3:0 paullo breviore, 4:o oblongo 5:0o distincte angustiore, 5—10 
sensim vix crassioribus sed distincte brevioribus, 5:o latitudine paullo longiore, 10:0 leviter transverso; ultimo 
breviter ovato penultimo !/; longiore. Prothorax basi coleopteris vix angustior, apice emarginatus, angulis an- 
ticis valde deflexis, anguste rotundatis, lateribus et basi leviter arcuatis, angulis posticis obtusis, disco trans- 
versim convexus, levis, piceo-niger, marginibus anguste picescentibus, punctis basalibus et apicalibus a margine 
parum remotis. Scutellum breve, piceum, nitidum, lzevissimum. HBlytra prothorace dimidio longiora, ferruginea, 
nitida, postice macula magna subquadrata, marginem externum et apicalem attingente, nigra; stria suturali ob- 
solete 4-punctata, serie discoidali e punctis 4 vel 5 parvis obsoletis constituta. Abdomen apicem versus angu- 
statum, obsolete parce punctatum, basi leve, nigro-piceum, segmentis 2—5 marginibus piceo-rufis. Corpus 
subtus mnigrum, paullo fortius et densius punctatum, tenuiter pubescens. Pedes cum coxis ferrugineo-testacei, 
coxis anticis basi infuscatis, tarsis anticis simplicibus, posticis tibiis distincte longioribus. 
Habitat in fungis arboreis in territorio silvoso rarissime; prope ostium fluminis Tunguska media ?9/; et in 
vicinitate vici Imbatsk 5$/, tria specimina legi; prope vicum Lebedevo ”/; etiam a TRYBOM caplus. — Mus. 
Holm., Coll. Haglund et Sahlb. 
; 709. Lordithon pygmaeus FaABR. — THoms. Sk. Col. III, 174,6. — Oszyporus FABR. Spec. ins. I, 
JIJJd, 4 (1781). — Bolitobius KrRAATz Ins. Deutschl. II, 451, 13. — PAnpD. Mon. Tachyp. Eur. 3517, 38. — 
Eauv. Faun. Gall.-Bh. 351, 7. — GEMM. et Har. Cat. Col. 569. 
In territorio silvoso prope vicum Sortinge ?/g a BERGROTH captus. — Tota Europa, Asia, Africa et 
America borealis. — Mus. Helsingf. 
Var. b: KraArz Ins. Deutschl. II, 451, 13 var. — Fauvv. Faun. Gall.-Bh. 552, 8. — Bolitobius bi- 
guttatus SrEPH. IU. Brit. Ent. V, 175 (1832). — Bolit. intrusus HAMPr Stett. ent. Zeit. 1850, 349. — PAND. 
Ann. ent. Er. 1869, 396, 31. 
In territorio montoso prope oppidum Krasnojarsk !!/, unicum specimen inveni. — Europa media, Sibiria 
orientalis. — Coll. Sahlb. 
Tribus: Olistherina. 
710. Olistherus megacephalus ZETtT. — THomMs. Sk. Col. II, 176, 1. — Fauvv. Faun. Gall.-Bh. 20, I. 
not. — GeEMM. et Har. Cat. Col. 674. — Omalium Zett. Fauwn. Ins. Lapp. I. 96, 17 (1828). 
Habitat sub cortice Laricis sibirice in territorio arctico et parte boreali territorii silvosi minus frequenter; 
ad vicos Chantaika 16/; et !$/;!, Polovinka 18/3 (TryYBOoM), Lebedevo ?7/4!, Fatjanovsk ?3/4 (TRYBOM), Sortinge 
12/.; (BERGROTH) et prope monasterium Kondinsk ?/, (BERGROTH) captus. — Lapponia, Alpes, Sibiria orientalis, 
America borealis. — Mus. Holm. et Helsing. 
Larva: Linearis, depressa, pallide testacea, pone medium leviter dilatata, parce longius setosa. Caput 
latitudine 2Xqvilongum et segmento primo dimidio angustius. Mandibule ante apicem dente acuto armatae. 
Palpi maxillares 3-articulati, articulo ultimo tenui longo; labiales biarticulati. Antenna 4-articulate, setigerae, 
articulo primo brevissimo, tertio apice denticulato, 4:o parvo subulato. Ocelli nulli. Segmentum primum tho- 
racicum secundo dimidio longius, apice fere semicirculariter rotundatum; segmenta secundum et tertium sub: 
sequalia, primo paullo angustiora, angulis omnibus lateribusque rotundatis. Segmenta abdominalia 9 apicem 
versus usque ad penultimum sensim longiora, 1—5 sensim latiora, 8:um 7:0o distinete angustius, 9:um parvum 
medio in tubam longam cylindricam productum et utringue appendice valde elongata biartieulata, tuba fere duplo 
longiore, longe setigera, armatum. Pedes 4-articulati, spinulosi. 
711. Olistherus substriatus PayKx. — THoms. Sk. Col. III, 176, I. — Favv. Fuun. Gall. Bh. 20, 1. 
— GemMM. et Har. Cat. Col. 674. — Omalium GYLL. Ins. Sv. II, 232, 29. — Staphylinus PaYK. Mon. Car. 
Append. 137, 34—32 (1790). 
Sub cortice Abietis in territorio silvoso prope vicos Lebedevo ?7/a!, Novo Saljevsk ?6/; (TRYBOM) et Sor- 
tinge 13/3 et 18/; (BERGROTH) captus. — Europa borealis, Alpes, Sibiria orientalis, America borealis. — Mus. 
Holm. et Helsing. 
; Larva: a larva precedentis vix nisi corpore antice magis angustato, segmento primo thoracico 3:0 di- 
stincte angustiore parcius setoso differt. 
KE. Vet. Ak. Handl. Ba. 17. N:o 4. : 14 
