602 . CRYPTOPHAGID. 
there is very little interstitial punctuation. Prosternum, mesosternum, sides of the 
metasternum, and ventral segments closely punctate. One specimen. 
TROGOCRYPTUS, gen. nov. 
Corpus elongatum, parallelum, nudum, transversim convexum. Tibi a versus latiores, angulo externo 
arguto, spinuloso. Tarsi 5-articulati; articulis basalibus tribus brevibus, subtus setosis, articulo quarto 
parvo, quinto elongato. Acetabula anteriora anguste occlusa. 
The insect for which this genus is established has given me much trouble. In 
working through our clavicorn beetles I have endeavoured to introduce it into several 
families, but without success, and I can suggest no position for it except amongst the 
aberrant Cryptophagine. We have only one specimen. It looks more like a small 
Trogositid than an ally of Cryptophagus. 
The palpi are small, their terminal joints simple. The prosternum is large, the 
anterior lateral sutures very distinct. ‘The front coxe are very small, placed quite at 
the back of the prosternum, not more prominent than the small prosternal process : 
this is very slender between the coxe, but immediately behind them is abruptly bent 
upwards, and its concealed termination is broader, so that the angles touch the tips of 
the prothoracic side-pieces, though there is no union between them. ‘The middle coxee 
are not broadly separated ; the metasternum forms an angular process between them. 
The mesosternal epimera are excluded from the acetabula bya sort of broad margin of 
the mesosternum ; the coxe, though globular, are rather large. The metasternum is 
elongate. The five ventral segments are subequal in length. The legs are short and 
stout. The epipleuree are very narrow. ‘The femora scarcely extend beyond the 
sides of the body. The tibiz are broad and spinose at the tip. The tarsi have the 
basal joints but little thicker than the terminal. 
This insect and the preceding genus (Cissocryptus) have a very important bearing on 
the classification of the clavicorn series of Coleoptera, and it is a matter for sincere regret 
that each of them is at present known by only a single example. 
1. Trogocryptus nigripectus, sp.n. (Tab. XVIII. fig. 21.) 
Flavescens, prothorace medio sternisque nigris, antennis extrorsum fuscescentibus; prothorace polito, sparsim 
P) DS ] 2 2 P 
punctato, margine laterali subtilissima, fere occulta; elytris seriatim punctatis. 
Long. 43 millim. 
Hab. Guatemaa, Cahabon (Champion). 
Antenne short, the club abrupt, the ninth and tenth joints being strongly transverse. 
Head very feebly punctured, bearing two large depressions transversely placed ; eyes 
rather small, but convex; clypeus emarginate in front; labrum large, rounded in front. 
Thorax about as long as broad, with the angles greatly rounded, the basal and lateral 
margins very fine, the lateral one placed low down and, in front especially, difficult to 
see; an obscure depression on each side some little distance in front of the base; the 
