Mr. H. W. Bates on Geodtjjhagous Coleojptera. 319 



XXXI. — New Species of Geodepliagous Coleoptera from 

 North-toest Mexico. By H. W. Bates, F.R.S. 



The following new species form part of a collection recently 

 received by Messrs. Godman and Salvin from their corre- 

 spondent, Mr. Forrer, and are here published in anticipation 

 of the Supplement to Coleoptera, vol. i., of the ' Biologia 

 Centrali-Americana,' in which work all the species of the 

 same collection will be recorded. They were collected on the 

 elevated plateau inland from Mazatlan and in the State of 

 Durango, a part of Mexico the zoology of which is but little 

 known. It will be a surprise to coleopterists to hear of the 

 occurrence so far south of the genera Carahus and Ci/chrus, 

 hitherto unrecorded from Mexico or any part of Tro])ical 

 America, and especially to learn tliat the species are not allied 

 to northern species of the Pacific slope or the Rocky Moun- 

 tains, but to forms peculiar to the Atlantic States of North 

 America. The section Sca]yhinotas of the genus Cychrus is 

 especially characteristic of the Atlantic States. 



Cicindela euthales. 



C. Catharince quoad formam similis, sed corporis lateribus nudis. 

 Viridis, opaca, fronte, sutura lateribnsque elytrorum nitidis ; labro 

 albo margine autico medio late producto tridentato, utriuque 

 sinuato, angulis rectis ; fronte vcrticali utrinque (et vertice) 

 subtiUssime striata ; capite inter oculos baud concavo ; palpis 

 nigris ; tborace transverse, lateribus albo pilosis vix rotundatis, 

 antice angulatis, dorso transversim indistincte striguloso ; elytris 

 apice conjunctira rotundatis, dorso band conspicue sculpturatis, 

 immaculatis: corpore subtusviridi-nitido, lateribus cupreo-violaceis 

 nudis ; pedibus cupreis. 



Var. nigra, opaca, abdomine medio et apice nitido ; labro albo. 



Long. 45-51 liu. (S 2 • 



Hah. Mexico, Ciudad, Durango [Forrer). 



Of similar form to C. Catharince., but more closely allied to 

 C. ioessa, in the elytra not being visibly sculptured and in 

 the naked sides of the body beneath. It differs from C ioesaa 

 by the forehead being more vertical and distinctly strigose on 

 each side, and (in the green form) by the different colour of the 

 side margins of the elytra and the under surface of the body. 



Cicindela neplielota. 



Minus elongata, postice paullo dilatata, supra fusco-aenea opaca 

 nigro-fusco varia, elytris vitta marginali (ab bumero usque ultra 

 medium continuata, post bumerum a margine paullulum remota) 



