MICROGLOSSA.—AMBODINA. 157 
1. Microglossa mexicana. 
Picea, antennis, palpis, pedibus abdominisque apice rufis ; capite, thorace elytrisque crebre sat fortiter, abdomine 
densius, punctatis; prothorace fortiter transverso, antrorsum leviter angustato. 
Long. 4 millim. 
Hab. Muxico Cordova (Sallé). 
Antenne short and stout, joints four to ten differing little from one another, each 
strongly transverse. Thorax nearly twice as broad as long, rounded at the sides and a 
little narrowed in front, not coarsely nor closely, but quite distinctly punctate and 
pubescent, a little shining. Elytra longer than the thorax, with rather close and coarse 
punctuation. Hind body very densely and not coarsely punctate. Legs clear red, 
rather short. 
This insect is extremely similar to the European J/. pulla, Gyll.; but the unique 
individual described is slightly larger than those of J. pulla, and the thorax and elytra 
are a little less densely and coarsely punctate and pubescent, the thorax is shorter and 
the antenne unicolorous. J. mexicana departs, however, in a conspicuous manner 
from the European insect by the structure of the mesosternal process, which is 
considerably broader, and not attenuate or acuminate at the extremity; this unique 
individual is a male, and has the ventral plate of the seventh segment of the hind body 
produced in the middle and ciliate, like the corresponding sex of M. pulla. 
AMBODINA. 
Palpi maxillares articulo quarto parvo, subulato, absque articulo supplementali. Gens marginats. Prothoracis 
lateria valde inflexa, omnino occulta. Coxee intermedie late distantes ; mesosterni processus elongatus, 
in medio longitudinaliter carinatus, apice latus, truncatus, cum metasterni processu arcte conjunctus. 
The insect for which this genus is established has quite the appearance of a Micro- 
glossa, or a small Aleochara of the subgenus Baryodma, Rey; but from both of these 
forms it is distinguished by the widely separated middle coxe; this character renders 
its location in Microglossa quite out of the question, while from Aleochara, with which, 
in respect of the pectoral structure, it is less discordant, it is quite separated by the 
want of the supplementary joint to the palpi. I have but a single individual for 
examination, and am not quite sure of the number of joints in the front tarsus; for one 
of the legs is lost, and the other in such a position that the structure of its tarsus cannot 
be satisfactorily observed with the microscope: thus, although I cannot observe more 
than four joints, I believe this member to be five-jointed ; for the general facies of the 
insect bespeaks its close affinity with Aleochara and Microglossa, which possess five- 
jointed front feet. The middle and hinder tarsi are certainly five-jointed. 
1. Ambodina granulata. 
Parum elongata, opaca, breviter griseo-pubescens, nigra, elytris pedibusque rufo-testaceis, antennis brevibus, 
