52 PROC. ENT. SOC. WASH., VOL. 22, NO. 3, MAR., 1920 



Habitat. Chili. 



Described from four specimens in the American Museum of 

 Natural History, representing both sexes. Type and allotype at 

 the Museum, a pair of paratypes in the collection of the author. 



A key to the known species of this genus has been prepared and 

 is offered here. Owing to the fact that it is based largely on the 

 original descriptions the characters chosen for use were of neces- 

 sity mainly color, of rather questionable value in the Hydnocerini* 

 Before much progress can be made, a great many of the early 

 described species of Cleridae will have to be redescribed. 



Key to the Species of Isolemidea. 



1. Front of head between the eyes carinate; elytra much shorter than the 



abdomen cariniceps Wolc. 



Front between the eyes planate or excavate; elytra as long as or longer 

 than the abdomen 2 



2. Elytra black, with a blue-green or emerald-green transverse fascia 3 



Elytra without green transverse fascia 4 



3. Legs red (tibiae greenish) pulchella Gorh. 



Legs olivaceous (posterior tibiae black) batesi Gorh. 



4. Elytra uniformly blue-black cf substriata n. sp. 



Elytra brown or piceous with distinct markings of another color 5 



5. Elytra greenish brown, each with a single round brown spot behind the 



middle bipunctata Schklg. 



Elytra piceous, marked with yellowish or yellowish green 6 



6. Elytra with the apex pale stramineous cf substriata n. sp. 



Elytra with basal markings in addition to the apical ones 7 



7. Elytra with an ill-defined yellowish green spot at base, apex broadly rufo- 



piceous apicalis Gorh. 



Elytra with base, apex and a median cross bar, also margin narrowly, 

 yellowish subtilis Gorh. 



( 

 Orthoplevra cyanipennis, new species. 



Similar to O. texana Bland, but with the elytra steel-blue and thorax bright 

 red. Elongate, rufous to rufo-piceous, elytra steel-blue. Head finely punc- 

 tured, the punctures becoming quite sparse toward vertex, antennae with 

 the club and a few of the segments of the funicle piceous, the scape and 

 adjacent segments rufous. Thorax with the sides parallel, slightly broader 

 than long (26-28), punctures rather fine and well separated one from another. 

 No trace of a carina on the basal median portion. Pubescence of head and 

 thorax rufous, short and rather sparse. Elytra long, tapering strongly to 

 apex, suture closed, apices conjointly rounded but with the sutural angles 

 blunt, basal portion as far as the faint lunate brownish fleck which occurs on 

 each elytron, moderately coarsely punctured, the punctures scattered, not 



