PHTTALUS. 181 



Hab. Mexico, Ciudad in Durango {Edge). 



There is a single male example only of this remarkable insect, which, notwithstanding 

 the eccentric structure of its antennse. seems to be perfectly congeneric with the other 

 species of the Group II. The parts of the mouth offer no perceptible difference ; and 

 the legs, though longer and more slender than usual, are similar in form and 

 proportions to those of certain species of Lachnosterna. 



II. Antennal joints 3-5 (in 8-jointed species 3 and 4) elongate and sub cylindrical. 



1. Antennm 10-jointed. 



16. Phy talus seniculus. 



Subcylindricus, pallide testaceus, fronte et thorace longe erecte flavo-pilosis ; elypeo mediocriter transverso, 

 antice sinuato discrete punctato, fronte grosse confluenter scabroso-punctata ; thorace medio dilatato, 

 postice subsinuatim angustato, angiitis anticis et posticis subrectis nullomodo productis, supra sat dense 

 mediocriter grosse punciato ; elytris subtilissime punctulatis, fere hevibus, ecostatis ; pectore flavo-villoso. 



c? . Pygidium mediocriter convexum, nitidum, punctatum, apice incrassato-reflexo. Venter medio parum 

 depressus, laevis, segmentis 5° et 6° breviter flavo-pilosis, hoc medio leviter concavo. Tibiarum posticarum 

 calcaria mediocriter elongata, libera, inferiore breviore. Ungues omnes dentibus fere sequalibus, inferiore 

 vix breviore ; basi minute dentati. Antennarum clava valde elongata, caeteris articulis conjunctis sub- 

 sequalis ; articulis 3°-5 m cylindricis, gradatim longioribus, 6° minus elongato, 7° brevissimo. 



Long. 13-15 millim. 



Hab. Mexico, Chiapas, Tepansacualco (Salle). 

 Two male examples only. 



17. Phytalus xanthocomus. (Tab. X. fig. 14, s .) 



Oblongus, flavo-testaceus, glaber, fronte thoraceque dense erecte hirsutis ; elypeo sat parvo, lateribus antice 

 paullo convergentibus, apice rotundatis, margine reflexo medio inciso-emarginato, dense punctato, fronte 

 alveolato-punctata ; thorace medio valde dilatato, angulis posticis rectis, anticis obtusis, supra sat grosse 

 et subdense punctato ; elytris punctulato-rugulosis ; pectore flavo-villoso. 



d . Pygidium convexum, glabrum, disperse punctatum. Tenter depressus, lsevis, segmento 5° medio setoso, 6° 

 medio foveato. Calcaria postica libera. "Ungues dente apicali sat lato acuto curvato, inferiore breviore, 

 paullo distanti, lato; basi rotundato-dilatata. Antennarum clava elongata, articulis 2°-7 m conjunctis 

 sequalis, articulis 3°-5 m paullo elongatis, cylindricis, 6° breviore, 7° brevissimo. 



Long. 13 millim. 



Bab. Mexico, Chiapas (Salle) ; Guatemala, Totonicapam (Champion). 



Two examples, both males. 



The claws are broadly dilated at the base and very gradually narrowed, but still 

 broad to the base of the tooth. This species and the following approach very closely 

 the Group I. of Lachnosterna. The Guatemalan example is figured. 



18. Phytalus ? 



Hab. Guatemala, Cerro Zunil (Champion). 

 One example, male, immature. 



