534 APPENDIX I. 



Page 210. — The occurrence of additional material has enabled 

 us to make a careful dissection of Omethes with the following 

 result : — 



OMETHES Lee. 



Mentum short, transverse sides arcuately converging in front, separated 

 at base from submentnm by a narrow membranous space ; lignla large, 

 membranous, the palpi nearly as in Podabrus. Maxillas bilobed, slightly 

 pubescent within, the inner lobe larger, the two somewhat triangular in 

 form ; palpi as in Podabrus. Mandibles slender, arcuate, prominent, 

 acute at tip, a slight tooth on the inner side near the middle. Labrum 

 short, transverse, sinuate in front. Presternum moderate in front of the 

 coxpe, which are conical, prominent, contiguous, and with large trochantin. 

 Middle coxse conical, contiguous. Posterior coxse transverse, prominent 

 internally. Abdomen with seven segments, the first in great part con- 

 cealed by the coxse. Tarsi with the third and fourth joints lobed beneath, 

 claws dilated at base in a broad tooth. Metathoracic episterna straight on 

 the inner side. Epipleurse distinct. 



In addition to the above characters, the gular sutures are 

 observed to be distant and parallel. 



The characters above given are essentially those of the Tele- 

 phorinse, excepting in the structure of the third and fourth tarsal 

 joints, in which an approach is made to the last tribe of the 

 Lampyrinae. We, therefore, conclude that the view expressed 

 in the preceding edition of*' this work (p. 188) is correct, and that 

 Omethes must be regarded as a connecting link between the 

 two sub-families. The following modification of the table {ante, 

 p. 210) is suggested : — 



Tarsi with joints 3-4 lobed beneath ; mentitm moderate ; gular sutures 

 distant and parallel. Omethkm. 



Tarsi simple, or with fourth joint lobed beneath ; 



Mentum very long, broader in front. Chauliognathini. 



Mentum small, often semimembranous. Telephokini. 



Excepting in a group of Telephorini the gular sutures are con- 

 fluent in the last two tribes. 



Page 304. — The occurrence of Trichoxys Hartwegii White in 

 Arizona requires the insertion of the genus. It is closely related 

 to Cyllene, and differs in the absence of the excavation at the 

 base of the pronotum, a character of very doubtful value. 



