78 GEO. H. HORN, M. D. 



oblique {AUopogoi^^. Metasternal epimera concealed. Posterior coxae 

 very narrow and feebly dilated within, slightly separated at middle. 

 Trochanters of anterior and middle legs moderately long. Onychiura 

 wanting. 



This tribe differs from the Dascyllini which follow by the slightly 

 prolonged epistoma concealing the labrum and mandibles and the 

 slightly separated posterior coxae. 



The genera which occur in our fauna are as follows : 

 Presternum prolonged meeting the mesosternum and limited on each side in 

 front with an elevated line divergent anteriorly. 

 Antennae slender, elongate, joints 2 — .3—4 very short, together not longer 



than the fifth Ulacropogon. 



Antennse subserrate, joints 2 — 3 only, short, together equal to the fourth. 



Etirypogon. 



Prosteruum not prolonged nor meeting the mesosternum, in front convex 



without raised lines. 



Antcnnte serrate, joint two short, third a little longer and but little shorter 



than the fourth AllapogOil. 



The genera of this tribe seem to have a certain relationship with 

 the Eucnemidae through Cerophytum. AUopogon presents characters 

 somewhat at variance with those assigned the tribe by Dr. Leconte, 

 (Classification p. 178). The definition has been based on other char- 

 acters as will be seen above. 



MACROPOGOST Motsch. 



Head slightly deflexed, inserted in the thorax as far as the eyes 

 which are moderately prominent and transversely oval. Antennae 

 slender, longer than half the body, joints 2 — 3 — 4 short and sub- 

 equal. Front prolonged beyond the insertion of the antennae con- 

 cealing in great part or entirely the labrum and mandibles, l^abrum 

 short, transverse. Mandibles arcuate. Mentum transverse, arcuate in 

 front, ligula not prominent. Labial palpi short, last joint triangular. 

 Maxillary palpi moderately long, second and fourth joints moderately 

 elongate and equal, the latter elongate triangular. Prosternum in front 

 of coxae moderately long, carinate on each side, posteriorly slightly 

 prolonged and meeting the mesosternum, coxae not more prominent 

 than the prosternum, trochantins large. Mesosternum horizontal, 

 moderately protuberant and with a groove on the lower face. Meta- 

 sternum moderately long, body winged. Posterior coxal plates narrow 

 scarcely dilated within, separated on the median line. Abdomen with 

 first segment short, 2 — 3 — 4 equal, fifth longer. Legs moderate, tibiae 

 with small spurs. Tarsi slender, first joint as long as the next two 

 together, fourth rather small, joints 2 — 3 — 4 lobed beneath, the lobe 



