15. 



Sub order IV.— COLEOPTERA. 



Family^. — 1. Tarsal joints five. 2. Terrestrial. 3. Anten-1 

 iiae filiform, eleven jointed, and on front of head. 4. j 



^ad vertical and very large, being broader than pro-thorax. I 

 Outer lobe of maxillae bi-articulate, inner terminated j 



Head 



5 



by an articulated hook 



7. Legs long and slender 



6. Mandibles long and curved. 

 Colors brilliant. 



Famili/la. — 1. Tarsal joints five. 2. Terrestrial. 3. Anten-] 

 nae filiform and inserted behind the base of the mandibles j 

 under a trontal ridge. 4. Maxillae with outer lobe pal- 

 pi form, usually bi-articulate; inner lobe curved, acute, and 

 ciliate with spines, 5 Legs slender and cursorial. 6. | 

 Anterior and middle coxae globular, posterior ones dilated I 

 internally. 7. Color usually black or dark brown; some 

 times metallic or spotted. J 



Famil>/ c. — 1. Tarsal joints five. 2. Aquatic. 3. Antennae" 

 filiform. 4. Himb r coxae very large, touching each 

 other on the inner edge and externally reaching the sides 

 of the body. 5. Oar-like swimming legs covered with 

 hairs; hind pair longest and much flattened. Body oval, 

 flattened, elliptical, 



3. Anten- ) 

 5. Fore^ 



70 



CICIMDEL- 

 IDAE. 



(Tiger Bee- 

 tles.) 



71 



Family d.. — 1, Tarsal joints five. 2. Aquatic, 



nae very short, 4. Body oval, bluish black, 

 legs longest. 



Family e. — 1. Tarsal joints five. 2. Aquatic. 3. Antennae ) 

 clavate 4. Body small, convex, oval or hemispherical. \ 



5. Palpi very long and slender. 



CARAB- 

 IDAE. 



(Hyena Bee- 

 tles. 



72 



DYTISC- 

 IDAE. 



(Diving Bee- 

 tles or Water 

 Tigers.) 



73 , 



GYRIN- 

 IDAE. 



(Whirligigs.) 



74 



HYDROP- 

 HILIDAE. 



(Water 

 engers,) 



J Seav 



Family i. — 1. Tarsal joints five, 2. Terrestrial and of large") 75 



size. 3. Antennae very clavate. 4. Thorax broad- 1 tI''^^'t|^" 

 ened, nearly circular, witli thin margin, 5, Body fl^it- [ (ggxton liee- 

 6, Head flat. 7. Emit a nauseous fluid. J ties. 



Family^. — 1. Terrestrial. 2, Tarsal joints five. 3. Body] 

 long, black and linear. 4. Elytra very short. 5. Max- | 

 illae bilobate, usually ciliated with four jointed palpi. 6. \ 

 Mostly minute; sometimes large. 7. Abdomen with | 



seven to eight horny segments visible. J 



Family "h.. — 1. Five tarsal joints. 2. Terrestrial. 3. Anten- 

 nae geniculate, the eighth and following joints forming a 

 compact, annulated, rounded or (rarely) triangular club. 

 4. Elytra truncate behind leaving two segments of the ■ 

 abdomen uncovered. 5. Bodies small, oblong and flat, or I 

 round, oblong oval, globose, compressed or convex, and I 

 black with the elytra variously sculptured with striae. J 



Family i. — 1. Tarsi five jointed. 2. Head small and deflexed 



3. Mandibles short. 4. Eyes rounded with a single 



ocellus. 5. Prothorax short; sometimes excavated for 

 the reception of antennae, 6, Antennae inserted in front { (Skin-Bee 

 of eyes, eleven jointed, 7, Legs short and somewhat | 

 contractile, f Infests cabinets.) J 



76 



STAPHYL- 

 INIDAE. 

 (Rove Bee- 

 tles.) 



77 



HISTER- 

 IDAE. 



(Mimic Bee- 

 tles.) 



78 



DERM EST 



IDAE. 



ties.) 



