HAMOTUS. 7 
plica intrahumerali abbreviata ; abdominis segmentis dorsalibus primo et secundo equalibus; palporum 
articulo ultimo parvo, brevi, lato. 
Long. 21 millim. 
Hab. Panama, Bugaba, David (Champion). 
This species is extremely similar to H. vicinus and the allied species, but differs from 
all of them in the shape of the last joint of the maxillary palpus. This latter is com- 
paratively small, its inner margin nearly straight though minutely prolonged internally 
at the apex, while the outer margin is very convex; the length of this joint is about 
the same as that of the tenth joint of the antenne. 
Only two examples are extant; they are in a very decayed condition, and are, I 
believe, both of the male sex, though this is indicated only by a minute flattening of 
the basal ventral segments. 
9. Hamotus suturalis. 
Hamotus suturalis, Schauf. Sechzig neue Pselaph. p. 82° (1880). 
Hab. Mextco, Teapa !. 
10. Hamotus nodicollis. 
Hamotus nodicollis, Raffray, Rev. d’Ent. i. p. 240°. 
Hab. Mexico }. 
§ 2. Thorax without transverse sulcus. 
11. Hamotus singularis. 
Hamotus singularis, Reitt. Deutsch. ent. Zeit. xxvi. p. 183, note’. 
Hab. Muxico (Bilimek!), Cordova (Sallé); Guatemata, San Isidro 1600 feet, near 
the city, Aceytuno, Capetillo, San Juan in Vera Paz, Senahu (Champion); Panama, 
Bugaba 800 to 1500 feet, David (Champion). 
I am not able to point with certainty to any external sexual distinctions of this 
insect; the condition of the pencil of hairs at the extremity of the hind tibia varies 
according to the state of the individual, and, moreover, can be flexed outwards under 
the apex of the tibia and tarsus so as to be concealed, though actually present. 
12. Hamotus setipes. (Tab. I. fig. 3.) 
Rufo-castaneus, elytris sanguineis, pube erecta elongata sat dense vestitus ; capite latiore, tuberculis antennariis 
sat distantibus; tiblis omnibus extus perspicue longius setosellis. 
Long. 3 millim, 
Hab. Panama, Bugaba 800 to 1500 feet, Volcan de Chiriqui 2000 to 4000 feet 
(Champion). 
Head broad, with two moderately large foveze on the posterior portion; the antennal 
tubercles clearly separated, so that a third fovea just behind the space separating them 
