186 COLEOPTERA OF NORTH AMERICA. 



strongly divergent and subulate ; the wings are laid along the 

 dorsal surface of the abdomen. The female is unknown to me. 



Two species are found in our country. P. plumosa, testa- 

 ceous, with the antennas, excepting the base, and the narrow tips 

 of the elytra fuscous, and the sides of the thorax broadly de- 

 pressed, is found from New York to Texas; P. fusciceps Lee, 

 from Texas, of the same size, form, and color, but with the head 

 fuscous, and the sides of the thorax only narrowly depressed. 



Lacordaire states that the species of Phengodes emit light ; I 

 have never seen a living specimen, but no appearance of phospho- 

 rescent structure is visible in any of the specimens before me. 



Sub-Family II.— TELEPHORLDAE. 



The head, though sometimes slightly protected by the thorax, is 

 never covered by it as in Lampyrini ; it is narrowed behind the 

 eyes, not immersed in the thorax, and its gular region is exposed. 

 The eyes are never very large. The antenna? are serrate or fili- 

 form, inserted upon the front, and somewhat distant at base. 

 The labrum is very closely connected with the front. The side 

 pieces of the metathorax are moderately wide, and the epimera 

 are frequently covered in part ; the episterna are strongly nar- 

 rowed behind, and their inner margin is sinuate. The legs are 

 slender, not compressed ; the trochanters moderate ; the soles of 

 the tarsi are flat or concave and spongy pubescent, except in the 

 groups Omethes and Malthini, and the fourth joint is bilobed. 



The sides of the thorax are never foliaceous ; and the females 

 are not very different in form from the males. 



Our tribes may be separated thus : — 



Mentum very long, wider in front. Chapliognathini. 



Menturn small, quadrate. Telephokini. 



Tribe I.— t HAlJLIO<i]VATHITCI. 



In this tribe the head is prolonged before the eyes ; the max- 

 illse are very large at the base, and the outer lobe in the living 

 insect can be protruded, forming a long thread-like process. The 

 maxillary palpi are long, and but slightly dilated ; the mentum is 

 elongate, and wider in front. The head is prolonged behind the 

 eyes, and the gular sutures coalesce at the median line. The 

 prosternum is small, broadly triangular, and the antecoxal plates 



