46 MALACODEEMA. 



MALACODERMA. 



A, Prosternum produced into a distinct point between 

 coxae. 



a» Labial palpi not very strongly developed. 



I, Socket holes for anterior coxae widely open behind 

 and within, almost effaced. 



1, Abdomen with five ventral segments. 



A A, Maxillary palpi distinctly four-jointed, 

 apex without spines. 



(I a. Mandibles prominent. 



Maxillae usually pointed or split at apex ; ligula split ; 

 first four tarsal joints with large membranous soles. 



Dascillidae. 

 h b. Mandibles hidden. 



Lobes of maxillae short, narrow, roundish and fringed at 

 apex ; ligula truncate ; labial palpi often forked ; first four 

 tarsal joints simple, fourth usually bilobed. Cyphonidae. 



JB IB, Maxillary palpi apparently three-jointed, 

 with three short blunt spines at apex. 



Mandibles hidden; lobes of maxillae small, inner one 

 indistinct ; ligula split into four at apex ; tarsi slender, 

 joints simple, first one elongate. Uuhriidae. 



2. Abdomen with seven (rarely six) ventral seg- 

 ments. 



A A. Antennae inserted close together ; man- 

 dibles small. 



a a. Eyes moderately large. 



Femora inserted at, or close to apex of trochanter. Head 

 more or less hidden under thorax ; female witli elytra and 

 wings. Body not luminous. Lycidac. 



b b. Eyes very large. 



Femora inserted on outer-side of trochanters. Thorax 

 generally much dilated, covering head ; female usually 

 without elytra and wings. Body generally with power of 

 emitting light. Lamioyridae. 



jB -B. Antennae inserted somewhat apart ; man- 

 dibles large. 



