794 SUPPLEMENT. 
ABABACTUS (p. 533). 
Ababactus politus (p. 536). 
Before the localities given, insert :—Mexico, Tapachula in Chiapas (/6ge). 
LATHROBIUM (p. 536). 
6. Lathrobium pusillum. 
Elongatum, angustulum, subdepressum, testaceum ; prothorace medio biseriatim, ad latera crebre, punctato ; 
elytris quam prothorax longioribus, seriatim obsolete punctatis. 
Long. 5 millim. 
Hab. Mexico, San Juan Bautista in Tabasco (Hoge). 
Antenne slender, elongate, not thicker externally. Head small, quite shining, smooth 
in the middle, the margins sparingly punctate. Thorax subquadrate, with two widely 
separated series of punctures along the middle; the lateral punctures are numerous, 
and not distinctly separated from the serial punctures. Elytra with numerous series of 
quite obsolete punctures extending their whole length. Hind body quite dull, very 
densely and finely punctured. 
This species is similar to the pallid examples of L. dimidiatum, but may be easily 
discriminated by the more numerous and more obsolete serial punctures on the elytra. 
The examples received are not in a good state of preservation, and the specimens 
examined do not exhibit any sexual character. 
7. Lathrobium flavidulum. 
Elongatum, angustulum, subdepressum, testaceum ; prothorace medio biseriatim, ad latera crebre, punctato ; 
elytris quam prothorax paullo longioribus, crebre, minus fortiter, irregulariter punctatis. 
Long. 63 millim. 
Hab. Mexico, San Juan Bautista in Tabasco (Hoge). 
Var. Rufo-testaceum, elytris ad basin seriatim ad apicem irregulariter punctatis. 
Hab. Mexico, Nuevo Laredo in Tamaulipas (Hége). 
Antenne long and slender. Head sparingly punctate. Thorax longer than broad. 
Elytra with irregular punctuation. 
This insect is more elongate (the antenne, head, and thorax being longer in propor- 
tion to the width) than Z. pusillwm, and the elytral punctuation is coarser and less 
regular. The only example received is apparently a female. 
The variety may perhaps prove to be a different species; the unique exponent of it 
is also a female. 
8. Lathrobium durangoense. 
Robustum, piceum, capite prothoraceque nigris, elytris fusco-rufis, antennis pedibusque rufo-testaceis ; protho- 
