THE DECTICINvE OF NORTH AMERICA— CAUDELL. 



303 



ever, the males are not furnished with conspicuous infra-cereal plates. 

 The elongate and somewhat swollen elytra and saddle-shaped thorax 

 easih^ distinguish this Mexican g-enus from its allies. There is but 

 one species, as follows: 



NEOBARRETTIA IMPERFECTA (Rehn). 



('Kpiiolioien imperfect II >< Reiix, Ti'aus. Auier. Eiit. Sue, XXVII, lilOO, p. S<». — 



KiRBY, Syn. Cat. Ortli., 11, 1906, p. 182. 

 Xcofiarrettia impcrfectity: Rkiix, Ent. News, XII, 1901, j). 16. 



Description. — Head scarcely broader than the anterior part of the 

 pronotum, into which it is quite deeply inserted; fastigium extremely 

 narrow, scarcely a fourth as broad as one of the eyes, no more than 

 a tenth as broad as the interocular space, above narrowly sulcate; occi- 

 put smooth and roundly tumid, not elevated above the anterior edge 

 of the pronotum. Eyes small, nearly round, ipiite prominent. An- 

 tennae long and slender, the basal segments very large and broad. 



Fig. 12.— Neobarretti.\ imperffxta. Adult male. 



irregular in shape, the fastigium crowded between them. Pronotum 

 saddle-shaped ])ut not constricted at any point, scarcely noticeably 

 l)roadened behind; pronotal disk crossed at the middle of the anterior 

 and posterior halves b}' transverse sulci, the anterior one slight and 

 meeting the edge of the pronotum halfway down the lateral lobe and 

 the posterior one very broad and meeting the posterior margin of the 

 lateral lobes just before the humeral angle, Avhich is broadh' rounded. 

 The pronotum Ijchind this posterior sulcus is at)ruptly and conspicu- 

 ously elevated and here furnished with rounded lateral and median 

 carina which are not present on the anterior part of the pronotum; 

 lateral lobes well developed, less than twice as long as deep and scarcely 

 sinuous l)ehind; pronotal disk slightly emarginate both before and 

 behind. Prosternal spines long and sharp, mesosternal spines thicker. 

 Anterior coxal spines, somewhat recurved, sharp and strongl}' com- 

 pressed ])asally; posterior femora long and slender, strongly swollen 

 on the I)asal half, armed on l)oth margins, beneath with short spines; 

 anterior and intermediate femora long, considerabh^ longer than the 



