106 LAMELLICOBNIA. 



structure, especially in the males — the form, colour, and sculpture offering little diver- 

 sity and apparently varying in many cases. 



1. Ochodgeus luridus. 



Ochedceus luridus, Westw. Trans. Ent. Soc. Load. n. s. ii. p. 67, t. 9. f. 4\ 

 Hob. Mexico x (Salle). 



I refer an example in the Salle collection to this species, as it agrees with Westwood's 

 description in size (9 millim.) and sculpture ; but if it represents the same species it must 

 be the opposite sex, as it shows no traces of the two tubercles between the eyes. The 

 forehead is concave, and the arcuated and thickened rim of the clypeus is terminated on 

 each side by a large tubercle ; the epistoma below in front is flattened, and also has a 

 thickened rim on its front margin. 



2. Qchodaeus praasidii. 



Paullulum oblongus, testaceo-fulvus, nitidus, erecte birsutus : eapite crebre asperato-punctato, fronte transversim 

 depressa, clypeo margine antico duplici carinis sequalibus perparum incrassatis arcuatis parallelis, superiore 

 utrinque leviter tuberculata ; tborace dense asperato-punctato, linea dorsali postice profunda ; elytris 

 punctato-striatis, interstitiis convexis, sat sparsim setifero-punctatis, apice suturali recto ; propygidio medio 

 canaliculato ; tibiis anticis apice intus acutis nee productis, extus denticulo 3° remoto, posticis mox a basi 

 intus usque ad apicem dilatatis, intus inermibus ; femoribus posticis lamina inferiore sat lata, apice bamato- 

 dentato ; tarsis posticis articulo basali gracili elongate 



Long. 6| millim. tf? 



Hab. Mexico, Presidio (Forrer). One example. 



Differs from all other species here enumerated in the apparently double clypeus, 

 which results from the true clypeal margin being not at all thickened, or vertically 

 declivous in front ; the epistome is consequently nearly on the same level, and having 

 an equally distinct and similarly arcuated anterior margin it looks like a duplication of 

 the clypeus proper. A similar structure seems to be exhibited by the North-American 

 species 0. ulkei, 0. simplex, and 0. musculus, the last mentioned having, however, a 

 thickened margin. 



3. Ochodaeus setulosus. (Tab. vit. fig. a.) 



Breviter oblongo-ovatus, vix nitidus, castaneo-rufus vel fulvus, supra densissime asqualiter sat breviter setosus ;' 

 eapite ruguloso-punctato, fronte transversim depressa, clypeo arcuato utrinque tuberculato, margine incras- 

 sato et subverticali, epistomate infra quadrato, planato ; thorace creberrime asperato- Tel granulato- 

 punctato, linea media dorsali laevi postice baud impressa; elytris punctato-striatis, interstitiis parum 

 convexis, irregulariter bi- et triseriatim punctulatis, apice rotundatis, sutura recta ; tibiis anticis apice 

 intus paullo productis acutis, extus denticulo tertio lato versus basin ; tibiis posticis normalibus, femoribus 

 infra lamella solum prope apicem triangulari. 



Long. 5|-7 millim. 



Hab. Mexico, Cordova (Salle), Vera Cruz (Hbge). 



Four examples, presumably of the same sex, as they offer no difference in the head 



