LONGICORNIA. 359 
This small species looks like a dwarf individual of P. hirsutus, but it presents 
structural differences which in any other Coleopterous family than the Longicornia 
would be considered generic. The thorax is destitute of the large conical lateral 
tubercle of P. hirsutus, the antennal scape is relatively shorter, and the relative 
proportion of the third and fourth joints reversed. 
SARILLUS (to follow the genus Polienus, p. 120). 
Gen. Polieno affinis; differt inter alia thoracis lateribus acute spinosis antennarumque articulo 3° scapi dimidio 
haud longiori. Corpus minimum, oblongum, longe pilosum. Caput inter antennas concavum ; frons late 
quadrata nec infra angustata ; tubera antennifera elevata ; oculi supra approximati, infra haud elongati 
subtransversi. Antenne filiformes, scapo elongato versus basin aqualiter angustato, articulo 3° scapi 
dimidio zquali, 4° quam 3" fere duplo longiori, ceteris gradatim decrescentibus. Thorax subcylindricus, 
antice et postice transversim subsulcatus, spina submediana basi lata. Elytra oblonga, apice conjunctim 
rotundata, medio dorso depresso, lateribus verticalibus ; nigro-penicillata et rigide setosa. Pedes robusti; 
femora valde clavata, pedunculata; tibise intermedie extus prope apicem profunde sinuate; tarsi breves. 
Acetabula antica extus brevissime et angustissime angulata ; intermedia fere clausa. 
The very small species which constitutes this genus would no doubt be included, on 
account of the near approach to closure of the middle haunch-sockets, by Lacordaire 
in Division Il. of his ‘“‘ Acanthocinides.” This character, however, exhibits such fine 
gradations in the allied forms, and is of such unsatisfactory application, that I think 
most of Lacordaire’s Division II. will eventually be referred to the ‘‘ Pogonocherini.” 
1. Sarillus pygmeus. (Tab. XXII. fig. 19.) 
Tomento ochraceo-fusco vestitus, cano-griseo nigroque variegatus ; pedibus et antennis rufescentibus, scapo nigro 
maculato, articulis 5°-11™ apice nigris; thorace et elytris setis elongatis rigidis nigris haud dense obsitis ; 
elytris lateribus, antennis pedibusque griseo-setosis ; elytris fasciculis 4 nigris, linea ante medium obliqua, 
fasciaque prope apicem lata obliqua fusco-marginata, vel area apicali tota, cinereis. 
Var, Elytrorum fasciis cinereis obsoletis. 
Long. 13-2 lin. 
Hab. Panama, David, Bugaba (Champion). 
Many examples. 
ECTENEOLUS (to follow the genus Sarillus). 
Gen. Colobure affinis. Corpus (precipue elytris) valde elongatum, nec setosum. Caput inter antennas sub- 
concavum, infra subretractile ; frons brevis convexa, infra angustata; tubera antennifera oblique elevata ; 
oculi grosse granulati, lobo inferiori lato rotundato. Antenne (? )corpore multo breviores, infra sparsim 
ciliate, articulis 3°-11™ gradatim decrescentibus. Thorax angustus, cylindricus, post medium tuberculo 
laterali lato conico. Elytra oblongo-linearia, apice brevissime obtuse truncata, prope suturam paullulum 
depressa. Mesosternum fere planum. Acetabula antica extus late, intermedia anguste, aperta. Femora 
elongato-clavata ; tibiee intermedi extus breviter sinuate. Tarsi mediocres. 
I find the anterior and middle acetabula in Colobura, which Lacordaire places in his 
‘‘ Pogonocherides,” open externally. In this character, as well as in the antenne and 
