440 BRUCHIDES. 
1. Bruchus brasiliensis. 
Bruchus brasiliensis, Thunb. Act. Holm. 1816, i. p. 45, t. 2. f. 1’; Schon. Cure. i. p. 85’. 
?. Pachymerus fuscicrus, Motsch. Bull. Mosc. 1878, p. 244°. 
Hab. Nicaragua, Chontales (Janson); Panama®, Bugaba, San Feliz (Champion).— 
SoutH AMERIcA ! 2, 
A small series of ten examples from our region exhibits much variation, but I am 
unable to distinguish more than one species. The characters by which the species is best 
distinguished from B. longicollis are the larger size, the greater amount of dark colour 
on the elytra, the dark (nearly black) palpi and hind tibiz, and the existence ‘in the 
males of a prominence above the middle of the pygidium limited below by a V-like 
impression. In the example (a female) from San Feliz the size is not greater than 
that of B. longicollis, and the palpi are pallid. The peculiarities of the male pygidium 
show much difference in the extent of their development, and the colour of the hind 
tibiz varies a good deal in its depth. Under these circumstances I conclude that 
P. fuscicrus, Motsch., must probably be one of the smaller and more pallid varieties. 
2. Bruchus longicollis. 
Bruchus longicollis, Fahrs. Schonh. Cure. v. p. 117}. 
? Pachymerus tuberculatus, Motsch. Bull. Mosc. 1873, p. 244°. 
Hab. Mexico }, Cordova (Sallé); GuateMmara (Sallé), Capetillo, Chaco} (Champion) . 
NicaraGua, Chontales (Belt); Panama ?, Bugaba, Volcan de Chiriqui below 4000 feet 
(Chanvpion). 
In this species the pygidium of the male does not exhibit any peculiarity, and the 
palpi and hind tibie are usually pale yellow. The size varies greatly, and about half of 
the examples from Bugaba are referable to a variety only half the size of the type ; 
occasionally the palpi are more or less spotted with dark colour, and in the larger 
individuals the hind tibie are castaneous-yellow; there is great variation in the 
maculation of the upper and under surfaces. I think it probable that Motschoulsky’s 
P. tuberculatus will prove to be one of the varieties of this species. 
3. Bruchus longifrons. (Tab. XXVI. fig. 1.) 
Capite angusto, oculis a thorace remotis ; pallide ferrugineus, parce griseo-vestitus ; capite fusco, prothorace in 
medio fusco-lineato ; antennis pedibusque testaceis, illis minus clavatis, articulis penultimis plus minusve 
infuscatis ; elytris vix pallido-submaculatis, versus apicem indistincte fusco-maculatis ; metasterno in 
medio minute angulariter prominulo. 
Long. 44 millim. (capite porrecto), 
Hab. Panama, Bugaba, David (Champion). 
This insect is allied to B. longicollis—though very distinct even from the smallest 
varieties of that species—by its smaller size, narrow elongate head with eyes farther 
