AGEILTIS. 65 



The head is deeply canaliculate in front, and transversely impressed on the vertex 

 between the eyes ; the channel occupies about one third the width of the space between 

 the eyes. The thorax has the deep impression on the disc closely rugulose, and the 

 raised surface immediately surrounding the impression is studded with small transverse 

 punctures; the posterior ridge is short, curved outwards and downwards to join the 

 lateral margin, and forms a continuous ridge to the anterior angle. The elytra have 

 the depressed sutural area and the sides closely and somewhat rugosely punctured ; the 

 subcosta is delicately and not very closely punctured; there is a scarcely noticeable 

 yellow pubescent spot close to the suture, before the middle, and a line of pubescence 

 behind the middle, bordering the suture ; the apex of each elytron is obliquely truncate 

 on the inner side and armed with about six small teeth. The lateral carina of the basal 

 segment of the abdomen is semicircularly emarginate at the place occupied by the yellow 

 spot. 



The example from Almolonga and one in the British-Museum collection differ from 

 the type from Cuernavaca in having the elytra relatively longer, more narrowed at the 

 apex, and the inner apical truncature more oblique. Having only two examples I do 

 not venture to separate these as a distinct species. 



12. Agrilus immaculifrons. 



Praecedenti simillimus, differt tamen fronte macula flava nulla ; elytrorum truncatura apicali minus obliqua, 



dente exteriore magis acuto. 

 Long. 6-7 lin. 



Hab. Guatemala, Duenas {Champion). 



This species closely resembles A. divaricatus, but is easily recognized by the absence 

 of the yellow pubescent spot on the forehead. There is also no pubescence on the 

 metathoracic episterna. The apical truncature of the elytra is less oblique, the 

 external angle more dentiform. The punctuation is rather stronger throughout. 



13. Agrilus lsBvipennis. 



Cyaneo-niger, nitidus, thorace elytrisque aenescentibus ; thoracis disco fere lsevi, medio canaliculato ; elytris 

 tenuiter punctatis, vitta mediana maculaque post medium flavis et vitta apicali fere alba ornatis, singulo 

 ad apicem emarginato, angulo externo spiniformi. 



Long. 6-7£ lin. 



Sab. Mexico, Cordova (Salle) ; Guatemala, Sabo in Vera Paz (Champion). 



The head is somewhat concave in front, with two oval swellings. The thorax has 

 the disc extremely finely and obscurely punctured ; the elongate discoidal impression is 

 well marked ; the posterior ridge is short and thick, and close to the margin. The elytra 

 have the subcosta well marked, smooth ; the sutural area is finely and not very closely 

 punctured, and the margin is finely but not so distinctly punctured ; the apex of each 

 elytron is emarginate, the inner angle denticulate, the outer one spiniform and more 



biol. centr.-amek., Coleopt., Vol. III. Pt. 1, March 1889. K 



