LONGICORNIA. a 369 
with joints 4-11 three times the length of 1-3 united, instead of only equal to them as 
in the female ; the eleventh joint especially being extremely long and slender. 
3. Periergates badeni. 
P, chiriquenst proxime affinis, corpore ( ¢ ) brevi, oblongo, robusto. Castaneo-fuscus, tomento fulvo maculatim 
et vermiculatim vestitus; capite confertim granulato; thorace cylindrico, quam lato parum breviori, 
basi mediocriter angustato, toto: dorso transversim ruguloso, rugilis antice interruptis ; elytris dimidio 
basali confertim granylatis, apicali crebre punctatis, medio basi, maculis majoribus a medio ad apicem, 
interstitiisque signaturis tenuibus vermiculeis, fulvo-tomentosis ; antennis pedibusque rufo-testaceis. 
3. Antenne corpore fere duplo longiores ; scapo quam in P. rodriguezi breviori, undique breviter setoso et 
scabroso, articulo 3° haud incrassato, quam scapus paullo longiori, 3°-4" subtus breviter dense ciliatis, 
4°-10™ haud brevioribus, 11° longissimo, apice curvato. Tubera antennifera sat elevata apice penicillata. 
Long. 7 lin. 6. 
Hab. Mexico? (Baden, coll. Bates). 
One example. 
Much broader and more robust than the Guatemalan species, which I take to be 
P. rodriguezi, and of which Mr. Champion found males only. In all essential points of 
structure the two widely different-looking species are congeneric. 
-EUDESMUS (p. 127). 
2. Hudesmus (?) niveilateris. 
Eudesmus niveilateris, Thomson, Physis, ii. p. 70'. 
Hab, Mexico, Cordova (Sallé).—Sovutn America, Brazil !. 
Thomson doubted, I think justly, that this curious species belonged to the genus 
Eudesmus ; but until both sexes are known it would be inexpedient to separate it. 
ISCHIOLONCHA (to follow the genus Eudesmus, p. 127). 
Ischioloncha, Thomson, Class. des Céramb. p. 122; Lacordaire, Gen. Col. ix. p. 711. 
One species only of this remarkable genus has at present been recorded ; it is from 
Cayenne. 
1. Ischioloncha lineata. (Tab. XXII. fig. 25.) 
Quam J. wollastoni brevior, subcylindrica, castaneo-rufa, pube subtilissima grisea vestita; thoracis dorso vittis 
tribus (mediana tenui), elytris utrinque vittis tribus (duabus dorsalibus ante apicem conjunctis interiorique 
basin haud attingente, tertiaque laterali basin haudattingente et post medium late interrupta) vittulaque 
subhumerali, ochraceis; pedibus et antennis nitidis, his articulis 4°-6™ basi griseo-testaceis, 3° adhuc 
longiori et paullo crassiori; coxis anticis haud spiniferis. 
Long. 53 lin. (2). ~? 
Hab. Guatemata, El Tumbador (Champion) ; Costa Rica (ool Bates). 
_ Two examples, both apparently males. a 
This species is rather shorter and broader than J. wollastont, Thoms., and shows | that 
the genus is closely allied to Kudesmus, the head being constructed on precisely the 
* BIOL. CENTR.-AMER., Coleopt., Vol. V., July 1885. | 3b 
