16. 



Family]. — 1. Tarsi five jointed. 2. Terrestrial. 3. Anten-] 79 



nae pectinate; tlie outer lamellate joints fixed and not so I LUCAN- 

 ----- - - J - Mandibles , I^AE. 



(Horn-Bee- 



closely united into a compact club as in k 

 frequently very large 



J 



ties.) 



Family "^ — 1. Tarsi five jointed. 2. Terrestrial. 3. Anten-] 80 



nae lamellate, and lamellae movable at will. 4. Olypeus | cp.RAp 



projecting. 5. Body thick, square and usually very \ aeidaE. 



large. 6. Fossorial legs short. (A family of great ex- I , „. 

 tent; one fourth of the whole sub-order.) J '^ nia.) 



Family \. — 1. Tarsi five jointed. 2. Terrestrial. 3. Anten-1 81 



nae serrate, outer joints of which are usually furnislied 

 with pores. 4 Head deeply sunken up to the elliptical [ ^upresT- 

 eyes. 6. Labrum small and prominent: mandibles .short f IDAE. 



and stout 6. Legs short, 



and of tough consistence. 



7. Body flattened and long, 



Family 2n. — 1- Tarsal joints five. 2. Terrestrial. 3. The 

 elpven-jointed antennae serrate and inserted upon tlie un- 

 der margin of front in grooves. 4. Thorax with movable 

 spine (prosternal spine fits loosely into mesosternal cavity). 

 5. Head I'etracted, though sometimes free as usual from the 

 thorax. 



82 



ELATER- 

 IDAE. 



(Spring- 

 Beetle.) 



Family n- — 1- Tarsi five jointed. 2. Terrestrial. 3. The 

 usually eleven-jointed, serrate, rarely pectinate or flabellate 

 antennae inserted in front rather closely together in typical 

 genera. 4. Head usually immersed in thorax. 5. 



The sometimes short elytra never strongly embrace the sides. 

 6. No thoracic spine. 7. The anterior coxae are contigu- 

 ous, conical, with a large trochantine: the middle coxae are 

 oblique, and the hinder ones transverse. 8. Legs slender 

 and of moderate length. 9. Bodies shorter, broader, and 

 of softer consistence than in 331. 



83 



LAMPYR- 



IDAH. 



(Fire-fly 

 Beetles.) 



Family Q. — 1. Hind tarsi with four joints each: middle and fore 

 tarsi with five joints. 2. No neck. 3 Body hard. 

 4. Colors black or brown. 5. The two lobed maxillae 

 sometimes have the smaller lobe armed with a terminal 

 corneous hook. 6. Palpi four-jointed. 7. Mandibles 

 usually short, robust, and with basal tooth. 8. Eyes \ 

 usually transverse. 9 Antennae usually inserted on 

 under side of head, or at least under a small frontal ridge, 

 and are clavate, sub-serrate, or rarely pectinate. 10. 

 Elytra rounded at tip, cover abdomen, and frequently em- | 

 "brace its sides far down. J 



five to fore and middle' 

 forwards and constricted 



iddle] 

 into I 



Family "Q. — 1. Four joints to hind tarsi; 

 tarsi. 2. Head much bent 

 a small neck. 3. The eleven-jointed antennae inserted \ 

 at the sides before the eyes. 4. iSoft bodied, cylindrical, | 

 slender beetles. 5. Legs long. 6. Found on flowers. J 



84 



TENEBRT- 

 ONIDAE. 



85 



iMELO- 



II) A E. 



(Blistering 



Beetles.) 



