404 SEEEICOENIA. 



described by Candeze are females. The male, of which we have a single example 

 from the Los Altos region of Guatemala, has much longer and stouter antennae. 

 These organs in the male are nearly half the length of the body ; in the female they 

 extend to a little beyond the humeri. The single female specimen from Omilteme is 

 unusually large and broad, and has the third joint of the antenna? much longer than 

 the second. The insect varies in length from 9J-15 millim. A female example from 

 Jalapa is figured. 



PARANIUS. 



Head deeply sunk into the prothorax ; eyes rather large; front convex, declivous, separated from the anterior 

 margin of the head, sharply and triangularly margined ; the mouth situated beneath ; antennae slender, 

 joints 2 and 3 short, equal, 4-11 elongate, the basal joint rather short ; prothorax narrow, almost as wide 

 in front as behind, with long, narrow, strongly divaricate hind angles ; elytra very elongate, depressed, 

 much wider than the prothorax ; prosternum with a broad chin-piece ; prosternal sutures double, sinuous, 

 very narrowly separated, not channelled ; prosternal process declivous behind the coxse, narrow, without 

 angular projection before the tip ; mesosternum depressed, the borders of the cavity not raised ; inter- 

 mediate coxa3 separated only by a narrow lamina ; posterior coxal plates moderately wide inwards and 

 obliquely narrowing outwards, very feebly subangulate at about the inner third ; legs elongate, slender ; 

 tarsi filiform, clothed with fine hairs beneath, the first joint of the hind pair about as long as the following 

 two joints united. 



The above characters are taken from a single species from Northern Mexico, The 

 eenus seems to be nearest allied to Anius and Psiloniscus, but it differs from both of 

 them in several important details. The coxal plates are less abruptly dilated inwards 

 than in most of the Pomachiliini ; the intermediate coxae are very narrowly separated ; 

 the mesosternum is depressed; the marginal carina of the front extends obliquely 

 downwards on either side to the middle, the front thus forming a triangular plate, 

 the median portion of which is not visible from above ; the prosternal sutures are 

 sinuous and not channelled. The basal joint of the antennas is rather short, as in 

 Psiloniscus. 



•1. Paranius mexicaxms. (Tab. XVIII. fig. 11, 6 .) 



Very elongate, depressed, rather narrow, moderately shining ; ferruginous, the elytra piceous, the legs testaceous ; 

 above somewhat thickly, beneath sparsely, clothed with fine yellowish-cinereous pubescence. Head densely, 

 rugosely punctured ; antennas about two-fifths the length of the body. Prothorax longer than broad, with 

 the sides feebly rounded from the middle forwards and sinuate behind ; the hind angles acute, unicarinate ; 

 the surface closely and somewhat coarsely punctured, the punctuation becoming denser and umbilicate 

 towards the sides and base, obsoletely canaliculate behind, and transversely depressed on either side of the 

 middle before the base. Elytra very elongate, depressed, fully one-third wider than the prothorax, 

 parallel to the middle, and arcuately narrowing thence to the apex, the apices conjointly rounded- 

 punctate-striate, the interstices flat and thickly punctured. Beneath finely and rather sparsely punctured. 



Length 9|, breadth 2g millim. ( 3 .) 



Hab. Mexico, Ciudad in Durango (Edge). 

 One specimen. 



