506 SEREICORNIA. 



Moderately elongate, broad, robust, slightly shining; brownish-castaneous, pitchy-brown or piceous, the 

 antenna and legs brownish or ferruginous; above and beneath somewhat thickly clothed with short, 

 decumbent, fulvo -cinereous pubescence. Head coarsely, closely punctate ; antennae extending to consi- 

 derably beyond the hind angles of the prothorax, and broadly and acutely serrate from the fourth joint, 

 in the male, shorter and less acutely serrate in the female, joint 3 very short, slightly longer and stouter 

 than 2, the two together much shorter than 4, 11 appendiculate. Prothorax convex, a little broader 

 than long, the sides subparallel from near the base to about the middle, and rounded and converging in 

 front, the anterior portion of the marginal carina not visible from above ; the hind angles long and 

 slightly divergent, sharply, obliquely carinate ; the surface coarsely and rather closely punctate, the 

 punctuation coarser and very sparse on the basal declivity, canaliculate behind. Elytra two and tAvo- 

 tbirds longer than the prothorax, a little rounded at the sides, rapidly narrowing from about the basal 

 third, attenuate at the apex, the sutural angles rather sharp ; finely punetate-striate, the interstices flat 

 and somewhat thickly, rugulosely punctate. Beneath thickly and finely, the prosternum coarsely and 

 sparsely, punctate; iutercoxal portion of the prosternum flat, the process moderately long, abruptly 

 and perpendicularly declivous a short distance behind the coxae, and horizontally extended thence to the 

 acute tooth before the tip, the upper basal portion short and triangular; intercoxal portion of the 

 mesosternum V-shaped, tuberculate or angularly raised on either side anteriorly ; posterior coxal plates 

 broadly and abruptly widened in their inner third. 



Va>\ llufo-castaneous, the legs and antennae flavo-ferruginous. 



Length 17-20, breadth 5-6 millim. ( <S $ .) 



Hab. Mexico, Ventanas in Durango (Edge), Chiapas (Salle), Yucatan (Pilate, in coll. 

 Janson), Temax in North Yucatan (Gaumer) ; Honduras (Mus. Brit.); Guatemala 

 (coll Janson), Escuintla (Conradt) ; Panama, Volcan de Chiriqui (Champion). — 

 Colombia x 2 ; Venezuela. 



Of this species we have received eight specimens from within our limits,. all males 

 but one, the latter being from Chiriqui. The variety is represented by a single 

 example from Escuintla. The type ( 6 ) is contained in the Janson collection, and 

 Candeze's description was made from it. The form of the mesosternum is very 

 different from that of Probothrium Albescens, P. velutinum, &c, and the insect is 

 much better placed in Ludius. The single ( 6 ) example from Durango is smaller 

 and less robust than the others, and has the prosternum more closely punctured. 

 L. setosus closely resembles L. teocanus, Lee, and the North-American insect incorrectly 

 identified by Leconte and Candeze with L. hepaticus (Germ.)*, from both of which it 

 may be immediately separated by the form of the prosternal process : viewed in profile, 

 this piece (instead of very gradually sloping downwards behind the coxee to the ante- 

 apical tooth, as in the N.-American insects) is abruptly and perpendicularly declivous 

 a little behind the coxse, and horizontally extended thence to the ante-apical tooth f. 

 The specimens of L. hepaticus from Mexico and Guatemala, mentioned by Candeze 

 (Monogr. Elat. iv. p. 307), one of which is contained in the Janson collection, belong 

 here. A male from Yucatan is figured. 



* L. hepaticus (Germ.), from Brazil, the types of which are contained in the Janson collection, is a 

 Probothrium, very nearly allied to P. rufivellum, Cand. Apart from the nearly vertical intercoxal portion of the 

 mesosternum, it may be known from the Forth- American species, and L. setosus also, by the acutely, triangularly 

 dilated posterior coxal plates, the more coarsely punctured elytral strise, the more attenuate elytra, &c. 



t Specimens of a species very closely allied to this, labelled " California," are mixed with the series of 



