20 



PECTINICORNIA. 



subacute, the disc of the metasternum and its punctured posterior margins the same as 

 in S. tropicus. 



4. Soranus recticornis. 



Passalus recticornis, Burmeister, Handbuch der Ent. v. p. 508 1 ; Truqui, Rev. & Mag. Zool. 1857, 



p. 316 2 . 

 Soranus recticornis, Kaup, Monogr. der Passal. p. 108, t. 7. f. 3 3 . 



Eab. Mexico 1 2 3 , Orizaba (Salle), Almolonga (Edge), Jalapa (Morrison). 



The antennal leaflets in S. recticornis are rather longer than in the two. preceding 

 species, but the first is not twice as long as the body of the joint ; the anterior angles of 

 the thorax are rather obtuse ; the metasternum convex and without trace of shield- 

 formation or group of coarse punctures. 



The middle tibiae have in the middle of the outer edge (not on the upper carina) an 

 abruptly projecting horny process, a little curled inwards, on which the long hairs are 

 much denser than on the rest of the edge. 



5. Soranus edipticus. 



Passalus edipticus, Traqui, Rev. & Mag. Zool. 1857, p. 311 J ; Kaup, Harold's Col. Hefte, iv. p. 23. 

 Soranus edipticus, Kaup, Monogr. der Passal. p. 108 2 . 



Eab. Mexico 1 2 , Puebla (Salle) ; Guatemala, Zapote (Champion). 



In this species the antennal leaflets, first and second, are twice as long as the body of 

 the respective joints, but vary a little in length in different individuals ; the anterior 

 angles of the thorax are obtuse ; the metasternum without trace of flattened plate or 

 group of coarse punctures. 



6. Soranus championi. (Tab. I. figg. 18, 18 a.) 



£. ediptico simillimus, sed differt cornu verticis antice valde elongato et libero, horizontal!, postice dilatato ; 

 tuberculis basalibus transversis antice verticalibus sed haud sieut in S. ediptico culmine sulcatis ; carinis 

 frontalibus brevibus, obtusis, apice haud tubercnlatis ; thorace elytrisque sicut in ea specie ; metasterno 

 valde differt, lateribus late punctulato-pubescentibus absque vitta laterali depressa ; antennarum lamellis 

 brevissimis. 



Long. 35 millim. 



Eab. Guatemala, Purula (Champion). 

 One example only. 



7. Soranus yucatanus. 



S. redicorni similis,.sed major elytrisque relative longioribus ; tibiis intermediis simplicibus (carina breviter 

 ciliata) unispinosis ; cornu verticis horizontali, basi haud dilatato, apice tuberculo suberecto ; tuberculis 

 basalibus minoribus, valde depressis, antice haud verticalibus ; carinis frontalibus fere sicut in S. recticorni, 

 validis, divaricatis, ante tuberculum mandibular em terminatis ; thorace angulis anticis subobtusis, lateribus 

 impunctatis, sulculo marginali antice profundo intus haud dilatato, punctato ; elytris punctato-striatis, 



