496 SEKRICOKNIA. 



disc, rapidly narrowing from about the basal third, somewhat attenuate at the apex ; punctate-striate, the 

 punctures coarse and closely placed, becoming very fine towards the suture, the interstices flat on the disc, 

 convex at the sides, and very sparsely, minutely punctate. Metasternum and abdomen very finely and 

 diffusely, the presternum and propleurse very coarsely, punctured, the propleurae more closely impressed 

 with excessively coarse, umbilicate punctures ; mesosternum declivous, depressed. 

 Length 11|-13, breadth 3-3§ millim. ( $ .) 



Hab. Nicakagua (Salle), Chontales (Belt, E. M. Janson). 



Seven specimens, probably all females. Allied to C. frenatus (Germ.), from Brazil, 

 but with the thorax very much more coarsely punctured, the hind angles more divergent 

 and incurved at the tip, the elytra differently coloured, &c. The insect is unknown to 

 Dr. Candeze. 



Group LUDIINI. 



TOMOCEPHALUS. 



Tomicephalus, Latreille, Ann. Soe. Ent. Fr. 1834, p. 146 ; Candeze, Monogr. Elat. iv. p. 284. 

 Tomocephalus, Gemminger and Harold, Cat. v. p. 1587; Candeze, Cat. Method. Elat. p. 187. 

 Megacnemis, Eschscholtz, in Silb. Revue Ent. iv. tab. (1836) ; Castelnau, Hist. Nat. Ins. Col. i. 

 p. 239 (1840). 



A Tropical-American genus containing four described species ; three others are now 

 added. All but one inhabit Central America, five not being known from south of the 

 Isthmus of Panama. 



a. Body flattened above ; elytral apices distinctly flattened. 



a!. Black, the prothorax and propleurse, and sometimes the metasternum and 



abdomen in part, sanguineous ; prothorax broader than long .... substriatus. 



V. Black, the abdomen and metasternum usually in part sanguineous ; pro- 

 thorax as long as broad melanotus. 



b. Body more convex above ; elytral apices not flattened. 



c'. Black, the abdomen usually in great part sanguineous or rufous . . . abdominalis . 



d' . Black, the prothorax, presternum, and propleurae rufous sardioderus. 



e'. Black, the elytra with the basal half or more, except along the suture, 



flavous bicolor. 



/'. Head black, with a reddish spot in front ; prothorax rufo-ferruginous, 

 with a transverse black median fascia ; elytra flavous, with the suture 

 very broadly and the margins narrowly black ; beneath partly black . . insignis. 



1. Tomocephalus substriatus. (Tab. XXII. fig. 1, <?.) 



Tomicephalus substriatus, Cand. Monogr. Elat. iv. p. 286 1 ; Steinh. Col. Hefte, xiv. p. 133 2 . 

 Tomocephalus substriatus, Cand. Cat. Method. Elat. p. 188 3 . 



Hab. Mexico (coll. Janson), San Andres Tuxtla (Salle) ; Nicakagua (Salle), Chontales 





