316 RHYNCHOPHORA. 
gibbous, cinereo-bifasciate elytra, the alternate interstices of which are raised and set 
with short, stout, clubbed, light and dark, setiform scales. The tibial claw is feebly 
developed, and the specimen therefore (its very stout legs notwithstanding) is probably 
a female. P. cincta, F&hr., from Brazil, must be an allied form. 
8. Promecops alternans, sp.n. (Tab. XIV. fig. 28, ¢.) 
Oblong, piceous or obscure ferruginous; variegated with a dense clothing of cinereous, brown, and blackish 
scales, the cinereous scales on the prothorax condensed into three vitte (the median stripe sometimes 
wanting) and those on the elytra into two oblique fascie, which are sometimes broken up into spots ; 
the elytra also set with scattered, rather long, curled, semierect setw, which (except on the apical 
declivity) are mostly confined to the alternate interstices, the rest of the upper surface with short, 
curled, decumbent hairs, the scales on the under surface cinereous. Rostrum broad, hollowed and 
eanaliculate ; joint 2 of the funiculus shorter than 1; eyes large, transverse. Prothorax broader than 
long, obliquely narrowed in front and behind, closely punctate. Elytra convex, oblong-subtriangular 
in ¢, subparallel in their basal half in Q ; punctate-striate, the interstices feebly convex. Mesosternum 
not protuberant. All the tibie unguiculate in both sexes, the anterior pair without teeth; tarsal claws 
small, free. 
Length 4-53, breadth 12-23 millim. (¢ @.) 
Hab. British Honpuras, Rio Hondo (Blancaneaux) ; GuateMAta, Teleman and San 
Juan in the Polochic Valley (Champion). 
Eleven specimens, all but two from Guatemala. This insect differs from most of 
the similarly-coloured forms in having the long, scattered sete on the basal half of the 
elytra confined to the alternate interstices. The male is robust and oblong, resembling 
P. dentimanus in shape. 
9. Promecops brevisetis, sp. n. (Tab. XIV. fig. 29.) 
Oblong, subovate, piceous or obscure ferruginous; variegated with a dense clothing of cinereous, brown, 
and blackish scales, the cinereous scales condensed on the prothorax into a sinuous vitta on each side 
(sometimes extending inwards and leaving only a narrow brown median stripe) and those on the elytra 
into two oblique fascie (the anterior one not reaching the suture) and various small scattered spots ; 
the upper surface also somewhat closely set with short, curved, decumbent set, those on the elytra 
seriately arranged down each interstice, the scales on the lower surface cinereous. Rostrum broad, 
hollowed and canaliculate ; joint 2 of the funiculus shorter than 1. Prothorax transverse, somewhat 
angularly dilated at the sides just beyond the middle, about equal in width at the base and apex; 
closely, finely punctate, and finely carinate or obsoletely canaliculate down the middle of the posterior 
half. Elytra convex, punctate-striate, the interstices raised. Mesosternum simpie. Anterior tibice 
without teeth. Tarsal claws free. 
Length 24-5, breadth 14-2} millim. 
Hab. Muxico, Tampico in Tamaulipas (Schwarz, in U.S. Nat. Mus.), San Rafael 
Jicaltepec (Zownsend, in U.S. Nat. Mus.) ; Guatemata, Las Mercedes, Pacific slope 
(Champion). 
Two specimens from Guatemala (taken as the types) and a series from each of the 
Mexican localities. ‘This insect is so like P. wmbrata that it can only be separated 
therefrom by the free tarsal claws; and the very short curved sete along each elytral 
interstice distinguish P. brevisetis from P. alternans. The sexes are scarcely 
: distinguishable by external characters. 
