44 



market. Dipping fowls in 134 ounces of pure carbolic acid to a 

 gallon of warm water. Proprietary remedies. 



Related species — Various species of the genus Trichodedus parasitic 

 on domestic mammals. Biting mouth parts, antennae 3-jointed. 



Order HEMIPTERA 



Includes the true bugs and the sucking lice. Take as illustrations : 

 Cimex lectularia, the bed-bug. World-wide in distribution. 



Description — Reddish-brown, broad and very greatly flattened. 

 Head short, broad, two prominent eyes, but, no ocelli; mouth parts 

 for sucking. Peculiar "buggy" odor due to secretioti of sac-like 

 glands at the base of the abdomen. 



Life history and habits — Eggs laid intermittently for a long period, 

 in cracks, under wall-paper, etc. Hatch in 7-10 days. Nymphal 

 stages five, total period to development of adult varying from 40-150 

 days or more. May live for months without food. In cases of 

 deserted houses, may feed on mice or other mammals. Invasion of 

 a house not necessarily due to neglect as the bugs may migrate, be 

 brought in with baggage, laundry, furniture, or otherwise. 



Methods of combatting — Use of iron bedsteads and reduction of 

 hiding places. Gasoline or alcohol squirted into cracks and crevices. 

 In more general infestations, fumigation with sulphur, 2 pounds to 

 1,000 cubic feet. Under proper precautions, fumigation with 

 hydrocyanic acid gas (See U. S. Bureau of Entomology Circ. 4C 

 "Hydrocyanic acid gas against household insects"). 



Haematopinus eurysternus, the short-nosed sucking louse of 

 cattle. Found especially on ears, back of head, mid back and places 

 where hair is Igng and they cannot be readily reached by the animal. 



Description — Bluish-gray, males 2}^ mm., females 3 mm. in 

 length. Mouth parts and unjointed beak capable of great extension, 

 with a chaplet of barbs at base, for attachment. Wings lacking, 

 legs highly specialized for clasping. 



Life history — Remain on the host. Eggs, or so-called "nits" 

 pyriform and attached to the hairs by an adhesive substance. Hatch 

 very soon and young escape through a caplike covering at top of egg. 



Methods of combatting — Cleanliness, keeping infested animals 

 apart from others if possible. Washes of kerosene emulsion or 



