from Siberia and Waigatsch Island. 309 



rectas longitudinales digestis compositi ; coxse pedum maxillarium 

 secundi paris dentibus 2-f2 baud validis armatse, siuu mediano 

 angulari prope seque profundo ac lato, antice setis longis vestitae ; 

 scuta dorsualia leviter rugosa et sparsissime pilosa, 3., 5., 8., 10., 

 12., 14. margine postico magis magisque sinuata, 1., 2., 4., 6., 7., 

 0., 11., 13. rotundata et tribus sulcis parvis pra:dita, 9., 11., 13. 

 angulis posticis productis ; sci;ta ventralia convexiuscula, postica 

 prcesertim sparse pilosa, omnia imprcssionibus angularibus ; pori 

 coxales rotundi in S 3, 3, 4, 3-3, 4, 4, 3-4, 4, 4, 3-4, 4, 4, 

 4-4, 4, 5, 4-4, 5, 4, 4-4, 5, 6, 4, in $ 3, 4, 4, 4-4, 4, 4, 

 4-5, 5, 5, 5 ; pedes primi paris calcaribus 0, 0, 1-0, 1, 1 : pedes 

 anales mediocres, longitudine tres partes antennarum aequantes, 

 baud incrassati, unguibus 2, calcaribus 1, 3, 2, arniati (mas 

 articulo quinto supra profunde sulcato) ; pedum analium articulus 

 primus inermis : unguis gcnitalium femineorum integer, acutus ; 

 calcarium 2 paria, quorum exterius interiore multo majus. 

 Color dorsi testaceus vel brunueo-testaceus, interdum vitta abrupta 

 obscuriore, veutris pallidior, griseus ; caput multo obscurius quam 

 dorsum. Longitudo corporis 12-14 m.m., antennarum 6 m. m., 

 pedum analium 4 m. m. 



Hah. circa flumen Jeiiissej ad Krasnojarsk (56°), Kolmogo- 

 rova (59° 30'), Verschininskoj (68° 45')," Dudino (69° 15'). 



2. Litliobius 'princeps^ n. sp. 



Lamina cepbalica subquadrata, lateribus valde rotundatis, latitudine 

 majore quam longitudine, setis longis sparsissimis vestita ; antennae 

 articulis 20, cylindraceis, rigide setosis compositJe, longitudine 

 tertiam partem corporis vix assequentes ; oculi ellipsoidei, ocellis 

 18-19, in 5 series transversas digestis (1 -t-4, 4, 4, 3, 2-1 + 3, 4, 



5, 4, 2), compositi : coxa3 pedum maxillarium secundi paris den- 

 tibus 2 + 2 brevibus, validis, nigris armata?, sinu mediano pro- 

 fundo et lato, t'ere duplo latiore quam longiore ; scuta dorsualia 

 sat rugulosa, stepissime subglabra, angulis posticis rotundatis ; 

 scuta ventralia plana vel subplana ; pori coxales magni, rotuudi 

 vel medii transversi, ovales, in S 5, 5, 6, 5-6, 6, 6, 6, in 2 6, 7, 



6, 7-7, 7, 7, 7 ; pedes primi paris calcaribus 2, 2, 1 ; pedum 

 analium articulus primus inermis ; pedes anales mediocres, inflati, 

 sparse et rigide setosi, unguibus 2, calcaribus 1, 3, 2, 1 armati : 

 unguis genitalium femineorum ad basin inflatus, bilobus, lobo 

 superiore paullo breviorc quam inferiore ; calcarium 2 paria, crassa, 

 valida, exterius interiore parum majus. Color dorsi et capitis 

 brvinneus vel castaneus, ventris et pedum flavus vel griseus. 

 Longitudo corporis (18-) 21 m. m., antennarum 6*5 m. m., pedum 

 analium 6*5 m. m. 



Junior. Antennae articulis 20, subcylindraceis ; oculi ocellis 10 in 4 

 series transversas digestis (1 + 1, 3, 3, 2) ; coxae pedum maxillarium 

 secundi paris dentibus 2 + 2 armatae ; pedes primi paris calcaribus 

 0, 0, 1 ; pedes anales calcaribus 1, 3, 2, ; pori coxales 4, 4, 4, 

 4 rotundi. Longitudo corporis 11 m. m. 



