137 



Prothorax (PI. IV., D, fig. 2, a) very small, elevated between the coxa3, and 

 acuminated posteriorly; episterna minute; vpimcra moderate, partlj' enclosing 

 the coxal cavities ; co.xal cavities large, oval, open both in front and behind. 

 Pectus with the mcsosterntim (PL IV., D, fig. 2, d) short ; episterna large ; epimera 

 moderate, humeral, not extending to the coxal cavities ; coxal cavities 

 moderately distant. 

 metastcrnum (PI. IV., D, fig. 2, g) moderate, transverse, not extending to the 

 sides of the body ; episterna very large and broad, reaching to the coxae ; 

 epimera narrow, entirely covered by the epipleural fold of the elytra ; posterior 

 margin between the coxte straight. 

 Venter composed of six segments ; 1 large and long ; 2-4 very short ; 5 aird 6 more 



than twice longer than the fourth, equal to each other, apical entire. 

 Legs anterior with the coxje large, elongate-oval ; trochanters minute, trigonal ; 

 femora moderate ; tibiae elongate, incurved, with the apex obtusely hooked ; 

 tarsi four-jointed, I and 2 nearly equal, deeply bifid or bilobed at the apex ; 3 

 minute ; 4 slender and long ; claws faintly curved, obtusely denticulate on the 

 under side of the base. 

 intermediate longer than the anterior, with the coxa; rounded, and the tibia3 



moderate and simple, in other respects like the anterior. 

 posterior like the intermediate, but with the coxae large and ovate. 

 Coxce anterior not contingent. 



intermediate moderately distant. 

 posterior remote. 



Corylophm was originally founded by Mr. Stephens on C. Cassidoides, and the 

 species which I have retained in the genus are those which resemble that insect in 

 their nine-jointed antennae, and elongate posterior angles of the thorax, and 

 especially in the extraordinary formation of the maxillary palpi, of which the 

 second joint is furnished on its outer extremity with a series of very long coriaceous 

 appendages, exactly resembling the rays of a fan, and arranged in a preciselj' 

 similar manner. I cannot imagine the use or purpose of this wonderful apparatus, 

 unexampled in any beetle I have ever examined. It attains the greatest develop- 

 ment in C. tectiformis, but is equally distinct, although of smaller dimensions, in 

 the other species. 



SPECIERUM EPITOMA. 



c. 1*30 mm. — Subbemisphericus, obscure castaneus, alutaceus, elytris 



punctatis, ped. Itete flavis, ant. praelongis, gracillimis, flavis . tectiformis. 

 c. 1 mm. — Brevis, latus, postice attenuatus. rufo-castaneus plus 



minusve obscuratus, alutaceus, elytris punctatis, ped. atque ant. 



flavis Cassidoides. 



c. 0-70 mm. — Ovatus, nitidissimus, pronoto rufescenti, elytris nigro- 



piceis, profuude punctatis, ped. atque ant. lajte flavis . . Japonicus. 



c. 0-95 mm. — Ovatus, valde convexus, nitidissimus, minute puuctatus, 



laete rufo-castaneus, ped. atque ant. laete flavis .... sublsevipennis. 

 c. 0-75 mm. — Subbemisphericus, nitidissimus, Isete castaneus, elytris 



remote punctulatis, ped. Isete flavis, ant. Ifete flavis, articulo 7 



valde incrassato ......... Reitteri. 



