262 PHALACRIDZ. 
and in this specimen the transverse aciculations are less distinct. It is possible the 
two are distinct species. 
9. Litolibrus minor, sp. n. 
Subhemisphericus, testaceus, nitidus ; elytris posterius stria suturali punctisque minutis seriatis, interstitiis 
punctis transversis subtilibus. 
Long. 23 millim. 
Hab. GUATEMALA, near the city, Zapote, Capetillo, San Gerénimo (Champion). 
The small size and absence of conspicuous coloration make this little insect liable 
to be passed over as an Olibrus, but it has apparently all the characters of Litolibrus 
well marked ; in respect of the hind feet it is indeed most strongly removed from 
Olibrus, the suture between the first and second joints being so obsolete that it can 
scarcely be detected, so that the tarsi appear to consist of a very long basal joint 
followed by a minute joint and the rather short claw-joint. The antenne have a short 
broad club developed on one side only of the mesial line (as in other Litolibri), the 
terminal joint being twice as long as the transverse penultimate joint. The thorax 
is short and possesses a feeble basal lobe. The sculpture of the elytra is very indistinct. 
The upper surface has a trace of the peculiar fulgid reflections seen in the larger 
concolorous species of the genus. 
The example from Zapote is only about half the size of the other specimens, so that 
it may possibly belong to another species. 
10. Litolibrus —— ? 
Hab. Mexico, Cerro de Plumas (Hége). 
A single example is the only evidence of the occurrence of Litolibrus in Mexico. 
Though in a bad state of preservation it appears to be closely allied to the pallid 
unicolorous varieties of Z. varians, but the obscure punctuation is more like that of 
L. minor ; it is probably distinct from either of these species. 
LITOCHRUS. 
Litochrus, Erichson, Nat. Ins. Deutsch. i. p. 108 note (1847) *. 
Lithocrus, Wollaston, Col. Hesp. p. 57°. 
This genus was established by Erichson! in a somewhat unsatisfactory manner. 
After describing the characters by which he distinguished it from Olibrus (the most 
important of these being the structure of the hind tarsi), he adds that “it possesses 
only extra-European species, these being from the West Indies, Madagascar, and New 
Holland ; and of described species Spheridium testaceum, Fabr., from St. Thomas, and 
Phalacrus brunneus, Er., from Tasmania, belong to it.” No information is given as to 
