RHYNCHITES. 23 
elongate and slender, slightly rounded at the sides, very remotely and not coarsely 
punctured. LElytra with series of distant fine punctures, which, however, are rather 
more distinct at the base. 
§ 3. Pygidium covered ; rostrum strongly curved; head and thorax dissimilar in form 
on the two sexes; punctuation of the elytra minute and remote ; size moderate. 
19. Rhynchites rufiventris. 
Rhynchites rufiventris, Jekel, Ins. Saund. ii. p. 226°. 
Hab. Muxico', Toxpam, San Andres Tuxtla (Sadlé), Playa Vicente, Oaxaca (Hége), 
Atoyac in Vera Cruz (H. H. Smith); Guatemata, Coban (Conradt). 
This is apparently not a common insect, as we have received only thirteen examples of 
it. It varies a little in colour, punctuation, and size, but I cannot distinguish more 
than one species. ‘The peculiar colour of the ventral segments is probably a constant 
character. 
20. Rhynchites flaviventris, sp. n. 
Nigerrimus, nitidus, abdomine flavo, setis erectis nigris minus dense vestitus, corpore subtus griseo-pubescente ; 
sutura elytrorum ante medium fascicula acuminata pubescentiz albide. 
Long. corp, absque rostro 5-54 millim. ; long. rostri 2 millim. 
Hab. Mexico, El] Mirador (Sal/é). 
Rostrum elongate, curvate. Head rather closely punctured. Thorax rather closely 
punctate. Scutellum with a scanty white pubescence. LElytra shining black, with 
numerous very distinct punctures, subserial in their arrangement, a small patch of 
white hairs on the suture, and a few white hairs at the sides near the shoulders. 
Under surface with a feeble white pubescence. In the male the rostrum is more 
densely sculptured than it is in the female, the head is narrower, and the thorax is 
more rounded at the sides. 
This is the only one of our species, besides &. rufiventris, that has the ventral seg- 
ments rufescent; and R. flaviventris is readily distinguished by the black colour, by 
the greater punctuation of the upper surface, by the white hairs on the suture being 
limited to a small space, and by the feeble white pubescence of the lower surface, the 
lateral band of white pubescence being absent. One pair. 
21. Rhynchites championi, sp. n. 
Niger, nitidus, elytris violaceis ; parce punctatus, nigro-setosus, scutello elytrorumque sutura in parte basali, 
elytris apicem versus, pectorisque lateribus albido-pubescentibus. 
Long. cum rostro 6-7 millim. 
Hab. Mexico, Tapachula in Chiapas (Hoge); Guaremata, Zapote, Duefias (Cham- 
pion). 
