4 PSELAPHIDA, 
of the species, these organs being very variable in structure in this genus and often 
differing in species otherwise exceedingly similar. 
Hamotus is numerously represented in our region. 
§ 1. Thorax with a transverse sulcus in front of the base. 
1. Hamotus pubiventris. 
Major, parum latus, rufus, densius fulvo-pubescens; antennis crassis, clava triarticulata, maxima ; palpis 
maxillaribus articulo ultimo elongato, apice intus curvato, acuminato; elytrorum stria discoidali elongata. 
Long. 33 millim. 
Hab. Nicaracva, Chontales (Janson). 
Antenne thick ; joints 2-8 subequal, the second joint, however, rather longer than 
the others; the club extremely large; the ninth joint rather longer than broad, the 
tenth slightly longer, though scarcely so long as broad, the terminal joint very large, 
broader than the preceding one, subrotundate, but still longer than broad. Terminal 
joint of the maxillary palpus of peculiar form, and with its appendage larger than in 
the other known species. Head with thick antennary tubercles, which are strongly 
elevated and separated by a deep depression; the two fovee on the vertex large, 
approximate, and but little distant from the frontal depression. Thorax subglobose ; 
the basal fovea extending back to the basal margin, and connected to the lateral fovea 
by a very fine sulcus. Elytra flat, ferruginous in colour, with a remarkably distinct 
discoidal stria extending three fourths of their length. Hind body elongate, very 
broadly margined, very densely covered with a depressed fulvous pubescence. 
Only one example was received of this very distinct species. I suppose it to be 
a female, from the absence of any peculiar structure, and from the form of the 
hind body. 
2. Hamotus commodus. 
Hamotus commodus, Schauf. Sechzig neue Pselaph. p. 33 (Dresden-Oberblasewitz, 1880)’. 
Hab. Mexico, Teapa}. 
8. Hamotus tritomus. 
Hamotus tritomus, Reitt. Deutsch. ent. Zeit. xxvi. p. 182°. 
Hab. Mexico (Reitter); Guarema.a, El Reposo, Zapote, San Isidro, Cahabon, San 
Juan in Vera Paz, Teleman, Panzos, La Tinta (Champion); NICARAGUA, Granada 
(Sailé), Chontales (Janson); Panama, Bugaba, Volcan de Chiriqui, David (Champion).— 
SoutH America, Colombia !. 
Though we have a good series of this species from Zapote and El Reposo, I have not 
been able to detect any sexual distinction ; from most of the other localities only one or 
