[ 10 ] 



tenna very short.— Found in Kentucky, on the S. trifoliatum ; length one-eighth 

 of an inch ; it produces a kind of white substance or mealy wax. 



63. Locusta calUptera: Back brown, head and belly yellow, wings blue with 

 two red stripes.— Length half an inch ; a beautiful little species found in Illinois 

 and Indiana. 



64. Locusta erytkropoda. Yellowish, back with .small transversal brown lines : 

 eyes and wings greenish brown : legs with black knees and red feet. — Length one 

 inch. Seen in Indiana and Kentucky. 



VII CLASS. HELMINTHIA.— THE WORMS. 



65. Hirudo aterrima Entirely black, oblong, obtuse. — Length over one i'nch ; 

 found in the swamps and bayous of the valley of the river Ohio. There are at 

 least twenty other undescribed species of Leeches in the United States. 



66. Hirudo Ohiensis. Olivaceous, elongated, flattened, obtuse ; back with two 

 parallel rows of distant red dotts. — Length two or three inches. Found in the 

 Ohio, at the mouth of the Kenhaway. 



67. Hirudo tHcolor. Oblong, obtuse, attenuated behind ; red above, with a lon- 

 gitudinal black stripe, yellow or orange colour beneath. — Length less than one 

 inch In the swamps near Lake Champlain. 



68. Hirudo marmorata. Oblong, obtuse, blackish variegated with brown white 

 and rufous spots. — Together with the foregoing and same size. 



VIII CLASS. APALOSIA.— THE MOLLUSCA. 



XVI. N. G. Philomycus. Differs from Limax by no visible mantle, the longer 

 pair of tentacula terminal and club shaped, .the shorter tentacula lateral a'nd 

 oblong. — The name means friend of fungi, on which they feed. 



69. Philomycus quadrilus. Grey, back smooth, with four longitudinal rows of 

 irregular black spots, long tentacula black and approximated : rather attenuated 

 behind, tail obtuse. — On the banks of the Hudson, length over half an inch. 



70 Philomycus oxyurus Fulvous grey, slender, back wrinkled longitudinally ; 

 tentacula brown, the lateral ones very small; tail acute, carinated above. — Length 

 two-thirds of an inch, in New York. 



7 1 Philomycus fuscus. Entirely brown, tentacula thick, back smooth, tail com- 

 pressed, acute. — In Ohio, on Amanita elUptica ; length one-fourth of an inch. 



72. Philomycus flexuolaris. Fulvous, back variegated with flexuose brown 

 lines, slightly wrinkled transversally ; attenuated behind, tail obtuse. — Length 

 from one to two inches, it may change its shape. Found on the Catskill moun- 

 . tains. There are many other species of this genus in the United States. 



XVII. N. G. EuMELUs. Differs from Lima:*: by no visible mantle, the four ten- 

 tacula almost in one row in front and cylindrical, nearly equal, the smallest pair 

 between the larger ones. — Name mythological. 



73. Eumelus nebulosus. Body nearly cylindrical, rounded at both ends ; back 

 smooth, crowded with grey and fulvous spots intermixed of the same tinge, with- 

 out spots beneath ; tentacula brown. — Length about one-inch; in Ohio and Ken- 

 tucky. 



74. Eumelus lividus. Livid brown above, gre)rish beneath, antenna black, ob- 

 tuse behind, back smooth and convex. — Length one inch ; in Ohio, Indiana and 

 Kentucky. 



75. Limax gracilis. Body slender, head and lower tentacula fulvous, neck 

 grey, upper tentacula brownish, mantle dark fulvous, back smooth brown, beneath 

 dirty white ; tail brown, obtuse above, mucronate and acute beneath — Probably 

 a real Limax. Yet it has the two long tentacula inserted above the neck, while 

 the small ones are terminal, and all slightly club shaped. It may perhaps fo'rm a 

 sub-genus Deroceras. Length over one inch. Found near Hendersonville in 

 Kentucky, and in woods. 



XVIII. N. G. Hemiloma. (Univalve land shell). Spire raised and smooth ; o- 

 pening obliqual elliptic, with an interior raised half margin on the inside lip, a lit- 

 tle twisted ; Columella decurrent on the whorl obliquely and with a very small 

 umbilicus. — The name means half margin. 



76 Hemiloma ovata. Ovate, very obtuse, smooth, six spires, breadth two-thirds 

 of the length. — Found near Lexington, in nearly a fossil State, by Mr. John D. Clif- 

 ford ; whitish, length three-sixteenth of an inch. 



