CATOGENUS. 508 
just behind the middle, when they converge a good deal, becoming straight again so as 
to form a neck at the base; the hind angles are carinate and almost acute. The elytra 
are very narrow, deeply striate, both the fifth and sixth striz are quite distinct and are 
joined at the base. The prosternum is very sparsely punctate, the mesosternum deeply 
foveolate. ‘The ventral segments are polished and impunctate. Three specimens. 
5. Catogenus temacensis, sp. n. 
Angustus, piceus, politus, pedibus elytrisque sanguineo-piceis ; prothorace posterius bene angustato, plus 
minusve punctato, dorso in medio vix bi-impresso, sed ibidem fortius punctato, inter plagas punctorum 
latius levigato. 
Long. 8-12 millim. 
Hab. Mexico, Temax in N. Yucatan (Gaumer). 
Although at first sight extremely similar to the more darkly coloured individuals of 
C. germanus, this is no doubt a distinct species. In addition to the absence of the 
channel on the middle of the head, it differs as follows: it is rather less convex, and 
the thorax is more distinctly narrowed at the base, while the lateral margin extends 
very nearly as far forward as the front edge; the fifth and sixth strie are perfectly and 
quite neatly conjoined at the base of the elytra. 
In most of the other characters of the upper surface, the two species are more 
similar. The antenne of (. temacensis are only moderately long; the punctuation of 
the thorax is much more variable than it is in most of the allied species, but the 
existence of an extremely slightly depressed area on each side of the middle towards 
the base, bearing coarser punctures, appears constant. The pencil of hairs on each 
side of the under surface of the head is placed very near to the mentum. There is 
some very coarse punctuation on each side of the prosternum. ‘The under surface 
is very highly polished ; there is a narrow fovea on the mesosternum. The femora are 
considerably less broad than they are in C. germanus. Ten specimens. 
6. Catogenus longicornis. 
Catogenus longicornis, Grouv. Bull. Soc. Ent. Fr. 1874, p. xxviii'; Ann. Soc. Ent. Fr. 1876, 
p. 489, t. 8. fig. 3”. 
Hab. Mexico } 2, 
We’ have not received any example agreeing with these descriptions and figure. 
C. longicornis is perhaps nearest to C. temacensis, but has black elytra, marked with 
red behind. 
7. Catogenus planus. 
Catogenus planus, Reitter, Verh. zool.-bot. Ges. Wien, xxvii. p. 176°. 
‘ Klongatulus, subparallelus, nitidus, obscure castaneus, planus; capite punctato, haud canaliculato, sulcis 
duobus brevibus antice insculptis; antennis valde elongatis, nigro-piceis, articulis oblongis, extus apice 
