MONOCEEPIDIUS. 345 



7. Monocrepidilis rubidus. (Tab. XV. figg. 9, 6 ; 9 a, genitalia, 6 .) 



Elongate, shining, ferruginous, or reddish-brown, the legs testaceous ; thickly clothed with yellowish-cinereous 

 hairs. Head thickly, finely punctate, feebly sulcate between the eyes, declivous in front, the frontal carina 

 broadly truncate and moderately prominent ; antennae nearly half the length of the body in the male, 

 only reaching the base of the elytra in the female, joint 3 nearly twice as long as 2, the two together 

 slightly longer than 4. Prothorax longer than broad, gradually narrowing from the base, with the sides 

 feebly sinuate behind and slightly rounded in front in the male, broader and with the sides strongly 

 rounded in the female ; the hind angles greatly produced, strongly divergent, carinate above at the sides, 

 and with a short, oblique carina at the apex; the surface rather sparsely, finely punctate, with scattered 

 intermixed slightly coarser punctures, obsoletely canaliculate down the middle, the channel becoming 

 deep behind. Elytra elongate, wider than the prothorax in the male, flattened on the disc, parallel to the 

 middle and rapidly narrowing thence to the apex, the apices conjointly rounded ; deeply and moderately 

 finely punctate-striate ; the interstices almost flat, very sparsely punctate. Beneath closely and finely 

 punctate, with scattered intermixed coarser punctures, the prosternuni more coarsely and much more 

 sparsely punctured. Posterior coxal plates very broadly widened to near the middle, abruptly and obliquely 

 narrowing outwards. Eourth tarsal joint rather broadly lamellate beneath. 



Length 11-14, breadth 3-4 millim. ( <S § .) 



Hab. Mexico, Ventanas in Durango {Hoge). 



Numerous examples of both sexes. Closely allied to M. parallelus, Cand., but 

 differing from it in its ferruginous colour and less parallel shape ; the thorax with the 

 fine interstitial punctuation more diffuse, the other punctures not so coarse ; the elytra 

 flattened on the disc, narrowing from about the middle. From M. lividus, De Geer, it 

 may be known by the more finely punctate-striate elytra, and the very differently formed 

 genitalia of the male. The short carina within the apex of the hind angles of the 

 thorax is sometimes indistinct. 



8. Monocrepidius tarsalis. 



Monocrepidius tarsalis, Cand. Monogr. Elat. ii. p. 250 l . 



Hab. Mexico 1 {coll. Janson), Omilteme in Guerrero {H. H. Smith), Jalapa {Hoge), 

 Las Peras and Juquila {Salle). 



I have seen twelve specimens of this species ; some of them are reddish-brown or 

 castaneous, and three have the elytra castaneous, with the suture broadly infuscate. 

 The males have the antennae a little longer than the females. In the very broadly 

 lamellate fourth tarsal joint the insect resembles M. lividus. 



9. Monocrepidius parallelus. (Tab XV. figg. 10, 6 ; 10 a, genitalia, 6 .) 

 Monocrepidius parallelus, Cand. Monogr. Elat. ii. p. 246 1 . 



Monocrepidius canus, Sturm, in litt. 



Hab. Mexico l {Salle, ex coll. Sturm), Santa Clara in Chihuahua, Chilpancingo in 

 Guerrero, Tacambaro in Michoacan {Hoge), Puebla, Guanajuato, Cosamaloapam {Salle), 

 Cuernavaca in Morelos {H. H. Smith). 



Sent in plenty by Mr. H. H. Smith from Cuernavaca. The males have longer 

 biol. CENTR.-AMEE., Coleopt., Vol. III. Pt. 1, May 1895. 2 Y 



