HISTER. 203 
covered with ocellated punctures and also has two large lobes or bosses on either side 
of it. The species is a conspicuous addition to the Central-American fauna. Numerous 
examples were obtained. 
23. Hister diadema, 
Hister diadema, Mars. Monogr. in Ann. Soc. Ent. Fr. 1854, p. 559, t. 9. fig. 124°. 
Hab. Panama, Volcan de Chiriqui (Champion).—Gutana! ; Borivia!. Three examples. 
24. Hister bullatus, sp.n. (Tab. V. fig. 10.) 
Suborbicularis, convexiusculus, niger, nitidus; antennis clava rufa; fronte impressa, stria valida angulosa, 
integra; pronoto stria interna integra punctato-striata, externa brevi; elytris punctato-striatis, striis 
1*-3 validis integris, 4* in medio late interrupta, 5* apice appendiculata, suturali brevi media; prosterno 
bistriato; mesosterno modice sinuato, stria integra, haud marginato; propygidio utrinque impresso 
pygidio bilobo, grosse et profunde punctatis ; tibiis anticis subdentatis, posticis spinosis. Long. 43 millim. 
Hab. Guatemata, Capetillo (Champion). 
One example. This and the following two species are closely allied to H. coronatus, 
Mars., but their size and system of striation on the thorax and elytra will easily distin- 
guish them. The section to which the three species belong is remarkable on account 
of the large and deep punctuation of the exposed abdominal segments. From the few 
specimens captured all seem to be rare or difficult to procure. 
25. Hister nodatus, sp.n. (Tab. V. fig. 11.) 
Suborbicularis, convexiusculus, niger, nitidus ; fronte subimpressa, stria integra, antice recta, utrinque sinuata ; 
pronoto stria interna integra, externa parum abbreviata ; elytris striis 1*-4™ integris, 5° brevi, suturali 
utrinque abbreviata ; prosterno bistriato, striis antice et postice junctis ; propygidio basi levi, utrinque 
impresso, transversim grosse punctato ; pygidio bilobo et profunde punctato. Long. 34 millim. 
Hab. Panama, Bugaba 1000 feet (Champion). 
The length of the external stria on the thorax separates this species from H. bullatus 
and H. montivagus. In the present collection there is a second specimen from Chacoj, 
Guatemala (Champion), which is perhaps a variety of this species; it differs from the 
other in the external thoracic stria being more abbreviated, and in the absence of the 
curious lobe-like excrescences on the pygidium: I name it, provisionally, odliteratus. 
26. Hister montivagus, sp. n. (Tab. V. fig. 12.) 
Suborbicularis, convexiusculus, niger, nitidus; fronte plana, stria valida antice recta; pronoto stria externa 
integra, pone oculos sinuata, externa brevi; elytris striis 12-8™ integris, 4? in medio late interrupta, 5° 
apice appendiculata, suturali brevi media; prosterno bistriato, postice junctis ; mesosterno sinuato, stria 
integra; propygidio utrinque impresso pygidioque grosse et profunde punctatis. Long. 33-43 millim. 
Hab. Panama, Bugaba, Volcan de Chiriqui (Champion). 
Three examples. The elytral strie in this species agree with those of H. bullatus ; 
the specific differences lie chiefly in the frontal and prosternal striz, and in H. monti- 
vagus being without the bilobed elevations on the pygidium. 
2 D* 2 
