8 BULLETIN BROOKLYN ENTOM. SOC. VOL. VIL. May 1884. ] 
Eyes strongly granulated. 
Prothorax pluridentate on the side. 
Mhirdsantennalyomt very long: - ). Vaaememe ie ee) ee ree ERGATINI. 
licadusim alse ce eee 2? 5 SR Tene a So ea ios -Ergates. 
Third antennal joint moderate, head large.............. .... MALLODONTINI. 
’ Mandibles ,{' not longer than head. ...................- "A aa Mallodon. 
Mandibles fof much longer than head...... Liseeesesese ue... Gtenodontes, 
Prothorax parcidentate at the side. 
Metathoracic epimera parallel. 
PAmitemmee anllN kona yy es, cis 2s cin adeponeieiectevetaye atachiite bl eg eae DEROBRACHINI. 
Hind femora deeply sulcate beneath; punctured.............. Derobrachus. 
Hind femora less deeply sulcate; several short elevated ridges 
OMMNNMERSUTLACE Les ic. aateueneinge eee VE olen Un ee Orthosom:. 
AMMEN eM GICALE efac 2 se) eal 2s fa Sehuapete Muoeo ls Fh ocells ence cecal eee PRIONINI. 
Thorax with three acute teeth at side........................ .. - Prionus. 
Thorax with a single distinct tooth at side........... Ee ae nee 4 Homeesthesis. 
Metathoracic epimera narrowed behind ............... 2.22... TRAGOSOMINI. 
Prothorax very hairy; a single acute tooth at sides............... Tragosoma, 
Byesfinely granulated oot). i eee he Pees o se: LOS OMUEIe 
Prothorax trapezoidal; smooth; obtusely toothed near base .........Sphenosthetus. 
Prothorax roughly punctured; acutely toothed behind middle.......... Eiateropsis, 
ERGATES, ‘7. 
The only genus in our fauna belonging to the tribe Lrgutinz. Pro- 
thorax broad and finely punctured in (%'; narrower, sculpture very coarse, 
small teeth of lateral margin longer, more acute in Q. Head small, eyes 
reniform; antennez slender, 11 jointed, two thirds the length of the body 
in Q', half the length of the body in Q, rough with elevated punctures. 
Poriferous spaces on 3d joint small, inconspicuous, on the under surface 
near the distal end, gradually becoming larger, until the outer joints be- 
come entirely poriferous and irregularly reticulated with fine elevated 
lines, forming elongate cells, which are much less distinct or scarcely 
visible in G'. Our single species is 
E. spiculatus Lec. Journ. Ac. N. S. Phila., ser. 2, II, 1852, p. 110: Proc. Ac. 
Phil. VII. 218; Entom. Rept. 1857, p. 59, pl. 2. fig. 9a. J’ californicus, White 
Longic., VII, 1, p. 37; Lacord. Gen. Col. 1869, p. 96, note 3; Q spiculifer, White 
loc. cit., p. 39. : 
