Packard] 184. {June 16, 
Platops lineata Newport, Ann. Mag. Nat. Hist., xiii, 267, April 1844. 
Lystopetalum lineatum Gervais, Aptéres, iv, 138, 1847. 
Cambala lactarius Gervais (in part), Aptéres, iv, 134, 184’. 
Reasia spinosa Sager, Proc. Acad. Nat. Sc. Phil., 109, 1856. 
Cambala lactaria Gervais, Exped. Amer. du Sud (Castelneau), Myriop. 
lv, ‘ 
‘‘ Reana chinosa Saeger,’’ Gervais, Exped. ]’Amer. du Sud, (Castelneau) 
Myriop. 14. 
Spirostrephon lactarius Wood, Myriop. N. Amer., Trans. Amer Phil. Soc., 
Phil., pl. ii, figs..11, 11a, 192, 1865. 
Cope, Proc. Amer. Phil. Soc., Phil., xi, No. 82, 
179, 1869. Trans. Amer. Ent. Soc., iii, 66, 
May, 1870. 
Ryder, Proc. U. 8. Nat. Mus., iii, 526, Feb. 16, 
1881. 
Tysiopetalum tactarium Packard, Amer. Nat., xvii, 555, May, 1883. 
Not Cambala lactaria Gray, Griff., Cuvier An. King. Ins., pl. 135, fig. 2, 
18382. 
Newport, Ann. Mag. Nat. Hist., xiii, 266, April, 
1844, 
Two o', two 9. Body-segments exclusive of the head, 61, with 115 
pairs of legs, Body and head horn-color, usually mottled and banded 
with dark blackish horn-color. The head usually with a broad, interan- 
tennal, black, conspicuous band enclosing and connecting the eyes. Eyes 
(compound) of 40-41 facets. Antenne dull, blackish brown; tip of the 
terminal joint pale, as also the other joints at their articulation. The body 
with a median dull yellowish dorsal stripe, and with a lateral row of con- 
colorous diffuse spots, one on each longest lateral ridge (the spots vary 
much, sometimes covering four or five ridges and extending low down on 
the sides of the scute, Each scute has, except those near the head and at, 
the end of the body,' about twenty-five prominent ridges, the dorsal twelve 
larger than those on the sides ; these ridges are high, with concave valleys 
between them ; the end of the ridges are acutely conical and project over 
the ends of the scutes. 
Length of the entire body 85™ ; thickness 2™, 
The above description was drawn up from the Louisiana specimens which 
were highly colored, banded and spotted. In the Massachusetts specimen 
the color is uniformly light brown, without the yellowish dorsal line and 
the lateral spots. The antenns are much darker, while the legs are paler 
than the body. The head is much paler than the body ; it is dusky on the 
vertex between the eyes; but there is no definite interantennal band as in 
the Louisiana examples. 
The Iowa specimens resemble in coloration those from Louisiana, but 
the yellowish dorsal band and lateral spots are not quite so distinct, though 
the interantennal blackish band is distinct. 
Magsachussetts and McGregor, Iowa. Mus. Agricultural Department, 
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