VARIETIES OF UNCINARIA.
The uncinaria or hook-worm belongs to the family Strongylidœ, subfamily Strongylinœ, genus Uncinaria. As the name indicates, the parasite is characterized by a dorsal curvature of the anterior end of the body resembling a hook. The mouth is armed with teeth which have great penetrating power. The worms vary from one-half inch to an inch in length and are peculiar in that they live by sucking blood from the host.The parasite is not confined to man, but exists in many animals. Uncinaria canina, according to Stiles,1 is common in Washington, D. C., and has caused among pups in some communities the death of over 25 per cent. It also occurs in cats. Uncinaria stenocephala is found in dogs, foxes and other animals. Uncinaria trigonocephala occurs among the sheep in Texas and has killed 25 to 50 per cent. of certain flocks. Uncinaria radiata was described
CAPPS JA. UNCINARIASIS OR ANKYLOSTOMIASISWITH THE REPORT OF A CASE.. JAMA. 1903;XL(1):28–33. doi:10.1001/jama.1903.92490010028001e