_> 1 1 CLAVICORNIA. [Meligetlies. 



with interstices smooth, or at most showing very 

 faint traces of cross striation; forehead with an- 

 terior margin straight; colour black or leaden 

 black. 



A. Anterior tarsi of male strongly dilated ; thorax 

 only a quarter broader than long, at least as 



broad as elytra M. FLAVIPES, Sturm. 



B. Anterior tarsi of m;ile not or very slightly 

 diluted ; thorax twice as broad as long, narrower 



than the base of elytra M. PICIPES, Sturm. 



2. Thorax and elytra with fine but very distinct cross 

 reticulation between punctures ; forehead with an- 

 terior margin emarginate ; colour leaden black . . M.EOTUNDICOLLIS, Bris. 



3. Thorax quite smooth between punctures ; elytra 

 with fine, though distinct, cross reticulation ; fore- 

 head with anterior margiu straight ; body with 



strong purple metallic reflection . M. STMPHYTI, Heer. 



iv. Anterior tibia) serrate or pectinate for at least two- 

 thirds from apex ; teeth often irregular, but always 

 distinct and more or less strong. 



1. Upper surface very scantily pubescent, entirely 

 smooth between punctures ; legs lighter or darker 



brown ; anterior tibiae serrate. 



A. Anterior tibia? dilated from above middle ; 



thorax nearly as long as broad M. NANUS, Er. 



B. Anterior tibise not dilated from above middle ; 



thorax short, much broader than long . . . . M. SERUIPES, Qyll. 



2. Upper surface very thickly pubescent, thorax and 

 elytra smooth between punctures, scutellum only 

 with strong cross striation ; legs black ; anterior 



tibia? more or less pectinate M. MuaiNUS, Er. 



v. Anterior tibia? very finely toothed, but with two or 

 three distinct, though small, outstanding teeth, 

 situated at some distance from one another, and 



separated by two or more smaller teeth. 



1. Upper surface shining black, with slight traces of 

 cross striation between punctures ; anterior tibia? 

 with two outstanding teeth ; legs black, anterior 



tibia? pitchy M. LTJGTJBBis, Sturm. 



2. Upper surface dull black, with plain cross reticula- 

 tion ; anterior tibiae with two outstanding teeth ; 



ieprs dark, anterior pair dark red. 



A. Forehead straight ; anterior tarsi of male very 



strongly dilated M. OBSCUBUS, Er. 



B. Forehead emarginate; anterior tarsi of male 



not strongly dilated. 



a. Male with a small transverse keel on the last 



abdominal segment M. EBYTHEOPUS, Qyll. 



b. Male with a very strong transverse keel on 

 the last abdominal segment, divided by a 

 broad semicircular excision into two divisions, 



each ending in a strong sharp tooth . . . . M. BIDENTATUS, Bris. 



3. Upper surface shining black, with very slight 

 traces of cross striation ; anterior tibia? with three 

 short outstanding teeth, separated from one another 

 by one or two smaller teeth ; legs dark, anterior 



tibioe occasionally lighter . M. EXILIS, Sltirm. 



