478 Mr. F. P. Pascoe on Spherion and Mallocera. 
In the genus Mallocera, which Serville places between Eury- 
merus and Purpuricenus, we may include M]. opulenta, Newm., 
although the apices of the elytra are not in accordance with 
Serville’s description ; but the three Peruvian species described 
by Erichson (Wiegmann’s Arch. 1847, pp.140-141) must remain 
doubtful for the present. M.undulans and lateralis of White have 
been separated by M. Thomson to form his genus Appula: but 
this seems to me to be synonymous with Stizocera, Serv.; indeed 
M. lateralis stands under the name of “ Stizocera armata, Serv.” 
im some collections, but the species scarcely agrees with that 
author’s description. Appula, or rather Stizocera, only differs 
from Mallocera in the four posterior femora terminating in 
spines—a character of possibly only specific importance. Mal- 
locera eburioides, Wh., is better placed among the allies of Eburia, 
as the fourth joint of the antenne is as long as the succeeding 
one, which is not the case in the Spherion set; and it has the 
habit of Hburia, including the raised ivory-like spots of that 
genus. A species well known as Mallocera obliqua (Dej.), but 
described by Serville as a Trichophorus, is now the genus Eury- 
sthea, Thomson. Another well-known species, Mallocera virgata 
(Chev. MS.) I have here separated under the generic name of 
Limozota. M. simplex, Wh., can only be regarded as a very 
aberrant member, if one at all, of the genus in which Mr. White 
has placed it. 
Before describing the new genera, the following short dia- 
gnostic formula will serve to distinguish Spherion as it is here 
limited :— 
SPH#RION. 
Antenne elongatz (in fem. corpore zequales); art. 3%°—6"™ vel 7™ 
spinosis. 
Prothorax subdepressus. 
Tibie posticee subcompresse vel vix subcompressee, calcarate. 
It should be observed that the prothorax, except in being 
cylindrical, as opposed to depressed, affords no characters of 
generic value, for it is found to vary considerably in closely 
allied species: the basal antennal joints are often longitudinally 
grooved ; but this character also is not to be relied on. Nearly 
all the species referred to Spherion and Mallocera are natives of 
the tropical parts of North and South America*. 
The first of the two species here described is, I believe, S. 
suturale of Dejean’s Catalogue. 
* S. orientale, Wh., represented by a single specimen in the British 
Museum, is said to be from India. 
