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OMOPHEON. — NOTIOPHILUS. 



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Fam. CAEABID53. 



Division I. Mesothoracic epimera reaching the middle haunch-sockets 



.- r 





Subfam. OMOPEBONINJE. 





OMOPHRON. 











Omophron, Latreille, Hist. Nat. Ins. viii. p. 270. 



This curious genus, isolated in its morphological relations and showing some approxi- 

 mation to the water-beetles of the family Haliplidse, has a wide distribution. It is 

 spread over the warmer temperate and tropical zones of both hemispheres, but chiefly 

 north of the equator, passing to the south only in Africa, where species occur in the 



tropical and south temperate parts as well as in the island of Madagascar. As far as 

 known at present, the genus is absent from the Malayan region, Australia, and the 

 whole of South America. Thirty-four species have been described. 





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1. Omophron gratus. 



Omophron gratus, Chaudoir, Rev. et Mag. Zool. 1868, p. 3. 



Hab. Mexico, Izucar, Tuxtla, Etla, Durasnil, Oaxaca (Salle), Vera Cruz, Oaxaca 

 (Edge). 



Y 



2. Omophron sphaericus. 



Omophron sphcericum, Chevrolat, Col. Mex. ii. no. 167. 



Hah. Mexico, Vera Cruz (Salle, Edge). 



3. Omophron oblongiusculus. (Tab. II. fig. 1.) 



Omophron oblongiusculum, Chevrolat, Col. Mex. ii. no. 166 V 



Hab. Mexico, Las Vigas 1 , Orizaba (Salle); Guatemala, near the city (Champion). 





Subfam. NOTIOPEILINJS. 



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NOTIOPHILUS. 



Notiophilus , Dumeril, Zool. Analyt. p. 194 ; Chaudoir, Bull. Mosc. I860, iv. p. 270 



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Also an isolated genus, but restricted apparently to the northern hemisphere. The 



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species are amongst the commonest coleopterous insects in high northern latitudes, and 

 become rarer in the warmer temperate zone. The following is the first to be recorded 

 from Tropical America. 







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l. Notiophilus specularis. (Tab. II. fig. 2.) 



Elongato-oblongus, fusco-cupreus, antennis basi tibiisque ruf escentibus ; labro nigro, opaco ; fronte utrinque 

 prope oculum prof unde sulcata medio sexcostulata, costulis supra convergentibus exteriore furcata ; thorace 



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