140 Mr. G. C. Champion’s Notes on 
Rhadine, Baudi, Berl. ent. Zeitschr. 1873, p. 331. 
Micranobium, Gorham, Biol. Centr.-Am., Coleopt. ii, 2, 
p. 202 (1883) (part.). 
This genus includes a number of minute forms with a 
strongly produced and broadly expanded metasternal 
lobe which covers the mouth when the head is withdrawn 
into the mesosternal cavity. Six N.-American species are 
recognised by Fall, under one of which, P. bistriatum, Say, 
he describes three named varieties. About a dozen 
Central American forms (including one from the Pearl Is.), 
several of which were confused by Gorham with Micranobium 
pulicarium, are represented in the “ Biologia ” collection, 
but the material at present available is too scanty for the 
description of these small insects. M. Pic has named 
various Central and 8.-American and Antillean species, 
but, as Fall remarks (loc. cit.), his characterisations are 
insufficient for their acceptance unless supported by 
further description. Some attempt has been made by 
me to identify the Mexican and Antillean forms 
described by Pic after he purchased the Gorham collection. 
The changes in their synonymy are also noted. 
Petalium pulicarvum. 
Micranobium pulicarium, Gorh., Biol. Centr.-Am., Coleopt. 
il, 2, p. 202, pl. 10, fig. 14 (part.). 
Petalium pulicarium, Fall, Trans. Am. Ent. Soc. xxxi, 
p. 213; Pic, Rev. d’Ent. xxiv, p. 186 (1905). 
Hab. GuateMmata, Duefias and Capetille (Champion). 
The examples from the other localities quoted by Gorham 
belong to different species. The M. pulicarium, too, 
recorded by him from the Lesser Antilles appertain to P. 
antillarum, Pic. 
*Petalium striatipenne. 
Rhadine striatipennis, Pic, L’Kchange, xix, p. 172 (1903); 
Rev. d’Ent. xxiv, p. 186 (1905). 
Hab. Mexico, Mexico city (Flohr). 
This species is described as having “une coloration 
générale noire, l’aspect presque mat et les élytres plus longs 
que ceux de pulicarium, Gorh., et ses stries ponctuées 
fortes.” Long. 2°5 mill. Four specimens from Mexico 
city, sent us by the late Julius Flohr, doubtless belong here. 
