KKV TO FAMILIES OF < :i ,.\ VICOlvN' I A. LM f > 



JfJi. Hind coxae separated. 



7. First ventral segment elongated ; form elongate, slender ; 

 antenna 1 club two- jointed. 



Subfamily (XLIV). Lijcthni'. p. s'.H. 

 //. All the ventral segments snbequal. 



m. Middle coxal cavities not closed on the outer side by the 

 meeting of the ineso- and metasterna ; form very de- 

 pressed ; antennae sometimes clubbed but more often 

 with the outer joints scarcely thickened. 



Family XXI. CUCU.TIDJE, p. 5<;o. 

 tnni. Middle coxal cavities closed by the sterna; prosternum 



prolonged, meeting the mesostermun. 



n. Front coxal cavities open behind ; antennae with their 

 terminal joints distinctly enlarged; surface pubes- 

 cent and densely punctate ; form oval or elongate- 

 oval ; length less than 4 mm. 



Family XXII. CRYPTOPHAGID^, p. 569. 

 mi. Front coxal cavities closed behind; all the tarsi dis- 

 tinctly five-jointed. 



Group (XVIII). Ditcncs. p. 544. 



jj. Hind coxal plates grooved to receive the thighs; prosternum 

 prolonged behind and fitting into a notch of rnesosternum ; 

 antenna 1 with a three-jointed club ; length less than 5 mm. 



Genus (XXXVIII). TJiroscits. p. 775. 

 ii. Front cox;e transverse. 



o. Hind coxae flat, not grooved. 

 p. Antennae straight. 



q. Tarsi more or less dilated, first joint not short, the fourth 

 smaller than any of the others; antennae with a three- 

 jointed club ; elytra usually shorter than the abdomen, 

 the latter with five segments visible beneath; color rare- 

 ly wholly black. FamilyXXVI. XITIDULID.E. p. (i^s. 

 <l<i. Tarsi slender, the first joint short. 



r. All the tarsi with five joints, the first -or basal joint very 

 short; form elongate, usually depressed; length 5 or 

 more mm. 



Family XXVIII. TROGOSITID.E, p. GG1. 



n: All the tarsi with joints 1 to 4 short ; hind tarsi with 



but four joints ; form convex ; length less than 3 mm. 



Family (XLVIII). SPHINDIIXE, p. 901. 



l>l>. Antennae elbowed and with a short compact club; tibiae 



usually all dilated; elytra usually truncate and shorter 



than abdomen; form short, compact; black, rarely bi- 



colored. Family XXV. HISTEEID.E, p. 598. 



oo. Hind coxae grooved to receive the thighs in repose; body 



rounded or oval, convex; legs retractile. 



Family XXXI. BYRRIIID.E, p. 071. 



mi. Ventral segments 1 to ?> firmly united ('not movable), the others free 

 and movable; all the tarsi five-joinlcd. 



