404 TROGOSITIDA. 
from Popocatepetl mentioned above, while the other is of very large size, 20 millim. 
long, and has the channel on the head subobsolete. JI think it possible that these 
varieties may prove to be distinct, though in that case very closely allied, species; but 
we have not received enough specimens of them to decide this point, and it appears 
more probable that they are only local varieties. 
T. planipennis is one of the species in which the sensitive are on the club of the 
antenne are most reduced in size. I have not seen any example of it from North 
America; but Leconte’s description? of 7. wrea, from San Francisco, California, seems 
to apply to this species or to one closely allied. 
This insect is named 7. metallica, Perch., in collections; but Léveillé? has recently 
informed us from an examination of Percheron’s type that this is erroneous, and has 
proposed for the species the name I have adopted. 
16. Temnochila obsoleta. 
Trogosita obsoleta, Reitter, Verh. Ver. Briinn, xiii, Abhandl. p. 28°. 
Hab. Mexico}. 
Reitter places this insect next to 7. planipennis (metallica, Reitt.), but I suspect it 
will prove to belong to one of the varieties of 7’. virescens. 
17. Temnochila miranda, sp.n. (Tab. XIII. fig. 7.) 
T. planipennis proxime affinis; subdepressa, lete viridis, elytris externe rubro-cupreo fulgidis, ad suturam 
viridescentibus, capitis canalicula valde abbreviata. 
Long. 17-21 millim. 
Hab. Mexico, Omilteme in Guerrero 8000 feet (H. H. Smith). 
Whether this beautiful insect proves to be a distinct species or only a race of 
I. planipennis, it deserves a special name. In addition to the colour and the much 
abbreviated channel on the head, it has the hind-margin of the prosternum thicker 
than in any specimens I have examined of 7. planipennis. The sexual characters seem 
to be the same as in that common species. 
Mr. H. H. Smith found a series of ten specimens in the months of J uly and August ; 
one of them is a remarkable aberration in that it has no channel at all on the head. 
18. Temnochila urbensis, sp. n. 
Subdepressa, fere opaca, nigro-subviolacea ; capite prothoraceque crebre punctatis, illo obsolete canaliculato 
(¢) vel ecanaliculato (9 ), hoc posterius angustato, margine laterali in medio obsolete impresso, angulis 
anterioribus porrectis ; elytris obsolete punctatis ; area submentali parcissime punctata. 
Long. 12-16 millim. 
Hab. Mexico (ex coll. Sturm), near the city at an elevation of 8000 feet (Forrer). 
I separate this insect from 7. planipennis on account of the different canaliculation 
of the head, the less impressed sides of the thorax, and the peculiar colour but it 
