39 



Parts of the inoufli not dissected. 



Proiiotum moderate, transverse, excised in front to receive the head, with the sides 



circularly rounded, basal margin slightly arcuate. 

 Seutelium large and broad, slightly rounded. 

 Elytra elongate, attenuated posteriorly, extremities subtruneate and rounded, sides 



broadly inflexed beneath. 

 Abdomen with the two last segments partly exposed, in other respects not examined. 

 Winfis not examined. 

 Protliorax (PI. I., C, fig. 2, a) with the i^rosteriium rather large, elevated between 



the coxffi, and produced and dilated behind them; episterna small and narrow; 



cpimera large, broadly enclosing the coxal cavities : coxal cavities ovate and 



oblique. 

 Pectus with the mesosternum (PI. I., C, fig. 2, d) rather large; episterna long and 



narrow, humeral ; epimera short, not reaching the coxal cavities ; coxal cavities 



oval, moderately distant. 

 metasternum (PI. I., C, fig. 2, g) rather large, not extending to the sides of the 



body, with the posterior margin between the coxre straight ; episterna large and 



broad, as long as the metasternum ; epimera narrow, concealed by the 



epipleural fold of the elytra. 

 Venter composed of five segments, 1 very large, rather longer than the metaster- 

 num, with the sides broadly depressed to receive the femora ; 2-4 much shorter, 



equal to each other in length ; 5 much longer than the preceding, simple and 



obtuse. 

 Legs anterior with the trochanters small, triangular ; femora robust ; tibite simple, 



much dilated before the apex; tarsi short, robust, four-jointed, 1 rather long; 



2 and 3 shorter than the first ; 4 rather short, slender ; claws very long and 



slender, convergent at the points. 

 intermediate like the anterior, but with longer tarsi. 

 posterior with the upper angle of the trochanters much produced, and slightly 



recurved, in other respects like the intermediate. 

 Coxa anterior ovate, scarcely prominent, rather distant. 

 intermediate rounded, moderately distant. 

 posterior pyriform, oblique, considerably remote, not reaching the sides of the body. 



This pretty genus is distinguished from the rest by its depressed conical form, 

 deflexed and sessile head, and by the deep excision of the front of the thorax. 

 Like Ectinocephalus it bears an external resemblance to the Criiptophagidce, but is 

 strictly Corylophide in its anatomy. On account of their rarity I have not ventured 

 to dissect the mouth of this or the preceding genus, and therefore cannot accurately 

 describe their buccal organs, but the more prominent parts, especially the maxillary 

 palpi, are sufficiently visible under a high magnifying power to convince anyone 

 that they are of the usual Corylophide type. 



Conodes conicus. 



C. conicm, Matthews, Biol. Cent.-Amer. Col. ii., pt. i. p. 108, 1887. 



L. c. j'e lin. = 1 mm. — Obconicus, sat depressus, nitidulus, testaceus, pilis 

 brevibus aureis parce vestitus ; capite parvo, antice producto, oculis magnis, nigris, 

 non prominentibus ; pronoto brevi, transverse, ad basim parum dilatato, leviter 

 alutaceo, lateribus valde rotundatis et marginatis, margine basali fere recta, angulis 

 obtusis ; elytris longis, capite atque pronoto baud latioribus, plus quam duplo 

 longioribus, ad humeros latissimis, postice attenuatis, profunde et rugose punctatis, 

 stria suturali profunde impressi'i, lateribus fere rectis, late marginatis, apicibus 

 valde rotundatis ; pygidio exserto, testaceo ; pedibus atque antennis robustis, laete 

 flavis. 



