84 



Lahinl palpi (PI. I., A, fig. 6, in) rather short, robust, three-jointed — 1 small, sub- 

 triangular : 2 very large, turgidly ovate, truncate at the apex ; 3 conic, rather 



short and slender. 

 Labnim (PI. I., .\, fig. 3) moderate, almost quadrate, armed on the anterior margin 



witli four minute teeth. 

 Mdudililin (PI. I., .\, lig. -1) moderate, almost simple, slightly recurved, strongly and 



acutely hooked, and furnished with an erect horny process at their base, 



ciliated on the npper part of its inner edge. 

 MaxUhf (PI. I., A, lig. .5) moderate, unilobed, with the lobe simple, rather slender, 



and slightly sinuated, acute and faintly hooked at the apex; stipes small. 

 Mentiim (PI. I., A, fig. 6, j) short and broad, trauversely oblong. 

 Labium (PI. I., A, fig. 6, k) short and broad, strengthened at the sides with broad 



and strong costie. 

 Linf)i((i (PI. I., A, fig. 6, 1; elongate, narrow, as long as the palpi, nearly straight at 



its extremity. 

 Pronotum rather large, with the anterior and posterior margins straight, sides 



strongly rounded, posterior angles not produced. 

 ScutcUum moderate, subtriangular. 



Elytra long, ovate, Hul)truncate and much rounded at their extremities. 

 Wiiu/R ample, with the membrane elongate-oval, neuration strong but normal, 



posterior margin ciliated. 

 Abdomen composed of seven segments, four basal coriaceous, and three apical, 



large and corneous. 

 Prothnrax (PI. 1., A, fig. 2, a) with the prosternum large, broadly elevated between 



the coxfp, produced and much dilated posteriori}' ; epistcrna long and linear ; 



rpimcni large, rather broadly enclosing the coxal cavities ; coxal cavities oval, 



rather distant. 

 Pectus with the inmostermim (PI. I., A, fig. 2, d) rather small; episterna long, and 



rather narrow ; rpimcnt humeral, small, and short, not extending to the coxaJ 



cavities ; coxal cavities rounded, moderatel}' distant. 

 metasteriinvt (PI. I., A, fig. 2, g) large and long, not extending to the sides of 



the body, posterior margin between the coxaj slightly rounded ; epistcrna long 



and rather narrow, as long as the mctasternum ; epimcra narrow, entirely 



concealed by the epipleural fold of the el3'tra. 

 Vrntrr composed of six segments — 1 long and large; 2-C short, equal to each 



other in length, apical segment entire : tlie four basal segments furnished with 



small lateral processus rellexed beneath the elytra. 

 Leris anterior with the trochanters small, trigonal ; femora moderate ; tibia? simple, 



slightly dilated toward the apex ; tarsi fom- -jointed — 1 and 2 very short, the 



second rather dilated, and deeph' bilobed ; 3 minute ; 4 as long as all the 



others united, slender ; claws rather small. 

 intermediate and posterior like the anterior. 

 Coxip anterior oval, rather distant, scarcely prominent. 

 intermediate rounded, rather distant. 

 posterior pyriform, remote, extending to the episterna. 



This genus is the most abnormal of all the Corijlophidic, and in outward form 

 bears no resemblance to any of the family. But its whole anatomy is so purely 

 Corylophide, that no doubt can exist as to its proper position. In this respect 

 ^■Enifimiitieum affords an apt illustration of the importance of the external skeleton 

 of the under side, combined with the organs of the mouth, in seeking a correct 

 clue to the systematic position of an unknown genus. In all these points it differs 

 but little from the most nornuil type of llie family. This is clearly shown by the 

 unilobed maxilire, the large size of the second joint of all the palpi, and the length 

 of the first ventral segment, although on the upper side the autennie alone present 

 any Corylophide character. 



