462 BUREAU OF ANIMAL INDUSrRY. 



20. Tarsi with dorsal protuberance (U. S. A.?) J. dentatus. 



Tarsi without dorsal protuberance (Ecuador) J. fossulatus. 



21. Scutum with unequal punctations, the largest near posterior border (Costa Rican 



Felis pardalis) L affinis. 



Scutum with equal punctations 22 



22. Punctations on shield very fine, close together 23 



Punctations large, distant 24 



23. Body provided with granulations (Madeira, IsisLUxis) I. obscurus. 



Body not provided urith granulations ( New Zealand) I. prsecoxalis. 



24. Coxae I with two subequal spines I. bifurcatus. 



Coxx I with one long spine (Sumatra) /. spinicoxalis. 



25. Coxae I provided with spines or tuberosities 26 



Coxae I smooth (British Columbia, Alaska, Cape Horn) J. putus. 



26. Coxse I with two small posterior tuberosities (New Zealand) I. eudyptidis. 



Coxae I spinose 27 



27. Coxae I unicuspid 28 



Coxae I bicuspid 29 



28. Spine on coxae I long, at postero-median angle /. hexagonus, p. 467 



Spine on coxx I short, at postero-lateral angle (New Zealand) I. intermedius. 



29. Scutum without lateral grooves. Po rose areas rounded I. frontalis. 



Scutum with lateral grooves. Porose areas triangular 1. angustus. 



30. Scutum considerably broader than long (Tasmania, Mariana Is.). I. ornithorhynchi. 

 Scutum, as broad as long or scarcely broader than long 31 



31. Coxx I unarmed (Tasmania) I. Tasmani. 



Coxx I armed 32 



32. Coxx I unicuspid 33 



Coxx I bicuspid (Sikhim? Sikkim) I. Ixvis. 



33. Coxx I with short spine (Africa) /. luteus. 



Coxx I with long spine (Brazil) : I. spinosus. 



34. Anal grooves distant posteriorly (Africa) /. pilosus. 



Anal grooves reunited in a point posteriorly (Australia, India) L holocyclus. 



C. — Nymph. 



35. Scutum longer than broad 36 



Scutum as broad as long or broader 41 



36. Anal grooves separated posteriorly 37 



Anal grooves reunited in a point jwsteriorly (Australia, India) /. holocyclus. 



37. Tarsi without protuberance near the extremity 38 



Tarsi with protuberance near the extremity /. hexagonus, p. 467 



38. Scutum with lateral grooves 39 



Scutum ivithout lateral grooves (British Columbia, Alaska, Cape Horn) .. I. putus. 



39. Scutum short oval 40 



Scutum elongate oval, sides almost straight (South America) /. loricatus. 



40. Hypostome with three rows of denticles on each half I. ridnus, p. 462 



Hypostome with two rows of denticles on each half (Brazil) I. imperfectus. 



41. Scutum rounded - - - - 42 



Scutum cordiform, considerably broader than long (Tasmania, Mariana Is. ) 



I. ornithorhynchi. 



42. Coxx I provided with a long spine (Brazil) 1. spinosus. 



Coxx I with simple tuberosity (New Grenada) , - I. juvenis. 



