440 TRANSACTIONS OF THE 



audible detonation, with its accompanying cloud of smoke as in 

 the discharge of a gun. 



CYMINDIS. 

 Anterior tibiae emarginate ; elytra truncated at tip ; exterior 

 maxillary palpi filiform ; labials terminated by a securiform joint ; 

 neck none ; body depressed and destitute of the secretory organs 

 which furnish the detonating fluid ; nails pectinated. 



1. C. siNUATUS. — Black; feet testaceous; elytra with a pale 

 humeral spot and margin. 



Length one-fourth of an inch. 



Body punctured, glabrous; antennae, labrum, and palpi rufous; 

 thorax transverse, slightly contracted behind, lateral edge ab- 

 ruptly and minutely excurved behind, forming a minute acute 

 angle, basal lines obsolete, basal edge sinuately rounded ; elytra 

 blackish-brown, with a pale, rufous, humeral spot, margin 

 and obsolete geminate spot behind, striae acute, punctured, inter- 

 stitial lines &al broad ; postpectus, punctures obsolete ; feet tes- 

 taceous; venter impunctured. 



Found by Mr. J. Gilliams in Maryland. 



[Afterwards described by Dejean as 0. pustulata ; it belongs 

 to the genus Apenes Lee. Ann. Lye. Nat. Hist. New York, 5, 

 174. — Leg.] 



2. C. DECORUS. — Head blue ; thorax rufous ; elytra green 

 polished. 



Length three-tenths of an inch. [9] 



Carabus decorus, alatus, cjaneus, thorace pedibusque rufis. Fabr. 



Syst. Eleut. 



Head blackish-blue, obsoletely punctured; beneath purple 

 black : antennae fuscous; two basal joints rufous-obscure ; mouth 

 black ; mandibles rufous beneath ; trunk rufous, impunctured ; 

 beneath somewhat paler ; thorax with an impressed line and ob- 

 solete transverse rugse ; elytra green polished, with punctured 

 striae ; deflected edge purplish ; feet rufous ; tips of the thighs 

 and base of the tibiae black ; penultimate tarsal joints bilobated ; 

 venter obscure bluish-black. 



Found by Mr. Nuttall on the Missouri. 



[Belongs to Calleida Dej. — Lec] 



[Vol. II. 



