PHYTALTJS. 179 



This species is the analogue of the L. ilicis and L. Mrticula group of Lachnosterna 

 (Leconte's Group IX.) ; but it is only an analogy, or the recurrence of similar external 

 features, as clearly demonstrated by the numerous important points of structural 

 difference. 



c. Lower tooth of the claws much shorter than the upper, sometimes parallel 

 to it, sometimes a little defiexed. 



11. Phytalus macrocerus. (Tab. X. fig. 9, s .) 



Breviter ovatus, fulvo-testaceus, ventro flavo, fronte thoraceque longe hirsutis. Clypeus transversus, concavus, 

 margine antico valde elevato fere integro, supra parum punctato ; thorace discrete punctulato, medio 

 rotundato sed postice angustato ; elytris grossius discrete punctatis, costulis angustis elevatis, punctis 

 singulis setam incumbentem griseam eniittentibus ; pectore fulvo-villoso. Antennae 10-articulatas. 



c? . Pygidium fere planum, disperse punctatum, setis nonnullis. Venter late concavus, fere laevis, segmento 5° 

 apice medio dense granulato ibique margine sinuato, 6° medio lato, canaliculate, fasciculato, longe setoso. 

 Calcaria postica elongata, libera. Ungues basi vix dilatati, apice fissi, dente inferiore multo breviore, 

 paullo latiore, obtuso. Antennarum clava longissima, flava, casteris articulis conjunctis multo longior. 



2 • Pygidium fere planum, apice conicum, sicut in <5 disperse setifero-punctatum. Ungues dente inferiore 

 quam in <$ longiore et acutiore. 



Long. 11-13 millim. 



Hab. Mexico, Oaxaca, Cordova (Hoge). 

 A large series of examples. 



12. Phytalus platyrhinus. (Tab. X. fig. 10, s .) 



Oblongus, subcylindricus, castaneo-fuscus, nudus, subnitidus, corpore subtus, antennis et pedibus fulvo-testaceis ; 

 clypeo brevi latissime quadrato, angulis rotundatis, antice leviter et late sinuato parum reflexo, sat dense, 

 fronte sparsim, punctato ; oculis magnis ; tborace ante medium dilatato, postice haud angustato. angulis 

 posticis rectis subacutis, subtiliter disperse punctulato ; elytris ruguloso-punctulatis vel coriaceis, costis 

 perspicuis sed rugulosis ; scutello rufo-castaneo ; pectore fulvo-villoso. Antennas 1 0-articulatae. 



c? • Pygidium convexum, versus apicem planulatum, politum, disperse punctulatum. Venter medio usque ad 

 anum longitudinaliter anguste depressus, impunctatus, glaber, segmentis 5° et 6° parce punctulatis et pilosis. 

 Calcaria postica elongata acuta, inferiore breviore. Ungues dente inferiore multo breviore, acuto, nee 

 latiore, nee deflexo. Antennarum clava caeteris articulis conjunctis multo longior, articulis 5°-7 m brevis 

 simis intus acute prolongatis. 



$ . Pygidium medio transversim concavum. Yenter convexus. Ungues dente inferiore mediano sicut dente 

 apicali curvato sed multo breviore. Antennarum clava parva, ovata, articulis 5°-7 m normalibus. 



Long. 17 millim. 



Hab. Mexico, Orizaba (Salle), Salazar, Jalapa (Edge). 



Six examples, of which one only (from Orizaba) is a female. The hind tarsi in this 

 latter are wanting, and the remarkable sexual difference in the position of the lower 

 tooth is described from the anterior and middle pairs. The mandibles are short and 

 broad, and when closed are invisible. A specimen from Jalapa is figured. 



2 AA 2 



