338 BRACHELYTRA — MICROPEPLIDAE. 



Pitch-brown ; head, middle of thorax and of abdomen 

 darker ; antennae and legs reddish-yellow. Prominence in 

 middle of base of fourth dorsal abdominal segment ridge- 

 like. L. 1 1. Common. M. steqjhylinoides, Marsh. 



b. Forehead with three distinct raised lines ; sixth 

 abdominal segment with central ridge ending as a 

 tubercle at base. 

 Blackish-brown ; sides of thorax and elytra l)rown ; an- 

 tennae and legs reddish-yellow. Much duller than 31. 

 sta-phylinoides, punctuation feebler. Prominence in middle 

 of base of fourth dorsal abdominal segment tubercular. 

 L. 1 I. Common. M. margaritae, Duv. 



€. Elytra with suture and three longitudinal lines raised ; 



interstices quite smooth. 



Black, moderately shiny ; sides of thorax brownish ; 

 base of antennae and legs red. L. |- 1. Pare. 



M. tesserula, Curt. 



CLAVICOENIA. 



A. Antennae regular and, if very fine, witli an abrupt 

 club ; tarsal claws not unusually large. 



a. Prosternum horny. 



I, Posterior coxae not dilated, or if so, tarsi with 

 three or four joints. 

 1, Anterior coxae conical, prominent. 



A A. Elytra leaving greater part of abdomen 

 uncovered. 

 Antennae more or less abruptly clubbed, last joint very 

 large; mandibles acute; maxillary palpi generally with 

 from three to live joints, very long, last joint very long, 

 club-like ; abdomen bordered, with live or six ventral seg- 

 ments ; posterior coxae transverse, approximated ; femora 

 clubbed, tibiae slender, tarsi three-jointed, simple, often 

 with only one claw. Psclaphidae. 



li li. Elytra leaving at most the a])ical segments 

 of abdomen uncovered. 

 a a, Laliial palpi very short. 

 A (I. Tarsi with five joints. 



