LABIDOMERA.— PROSICELA. 241 



Hob. Mexico x 2 3 , Cordova, Cosamaloapam, Orizaba, Puebla, Vera Cruz, Chiapas 

 (SallS) ; Guatemala (Salle), Coban, Chiacam (Champion). 



The present species occurs in several varieties in regard to coloration, which have been 

 described by Chevrolat as two distinct species. Stal has given descriptions of three 

 varieties. The entire insect is either of a purplish or greenish blue, with the elytra 

 light flavous, the suture only being of a bluish colour, or each elytron having four 

 flavous round spots on a metallic blue ground. Between these extremes different 

 degrees of coloration occur, some specimens only showing the faintest indications of 

 flavous spots, others having these latter joined so that the darker ground-colour appears 

 in the shape of transverse bands which change from blue, as usual, to an obscure light 

 brown in some cases. The species has not previously been recorded as inhabiting 

 Guatemala. 



2. Labidomera clivicollis. 



Chrysomela clivicollis, Kirby, Faun. Bor.-Am. iv. p. 213 1 ; Rogers, Proc. Ac. Phil. 1856, p. 30 2 ; 



Suffr. Stett. ent. Zeit. 1858, p. 248 3 . 

 Chrysomela 3-maculata, Linn. Syst. Nat. ii. p. 592; Fabr. Ent. Syst. p. 95. 



Hab. Noeth Ameeica x 2 3 . — Mexico 3 . 



Whether this species really extends into Mexico remains to be seen, as I believe 

 Suftrian to be the only author who mentions this locality 3 . No specimen from Mexico 

 has come under my notice. 



PEOSICELA. 



Prosicela, Chevrolat in d'Orbign. Diet. univ. Hist. Nat. iii. p. 656 (1843) . 

 Labidosterna, Motschulsky, Schrenk/s Reisen, ii. p. 182. 



The long filiform antennae, the terminal joints of which are not thickened, distinguish 

 this genus principally from others of the present group. Not more than six species 

 have been described, of which one inhabits Guatemala as well as parts of South 

 America. 



l. Prosicela tibialis. (Tab. XV. fig. 25.) 



Obscure cupreous ; antennae, tibiae, and tarsi fulvous ; elytra obsoletely geminately punctate-striate, their 

 epipleurse and lateral margin, a spot near the scutellum, three others at the middle, and three elongate spots 

 near the apex, as well as a narrow sutural line below the middle, flavous. 



Length 4 lines. 



Head finely and rather closely punctured ; labrum fulvous ; antennae filiform, extending to two thirds the 

 length of the elytra, the terminal joints very elongate. Thorax transversely convex, the sides very rounded 

 and finely marginate, surface finely and rather closely punctured, longitudinally depressed near the sides. 



biol. cente.-amee., Coleopt., Vol. VI. Pt. 1, January 1883. 2 i 



