OBSERVATIONS ON THE EMBRYOLOGY OF LIMULUS. 675 
uige: with bab ales black. Tail dark on the pe tgga aei the tip for 
only about an inch, white. Graduation of tail ‘50. aments to the 
ee of dé miata Habitat, high central pent pn igr Pacific 
A. Nuttalli eae 
B. Wings ae loas and pointed, with a white bar across the outer primarios abou 
midway between the carpal joint and the tip of the wings: the ak maries 
not emarginated, the ig and second equal and neon: Tail narrow an 
forked, with a small white bar, in the males, across all th t 
Š a 
sh piedi wi nder p 
soiled white, transversely ers gem brown. A pure white ah gente 
mark on the throat hi 
brownish gray ab The termin 
feather is white = i both piepe larger and m quadrate, and: 
reel he shi The female lacks the 
wale throat marks, the white ite incl on the tail, and the wing patch 
"m muc: e less conspicuous. Habitat, eastern North America to 
opetue, var. popetue Baird. 
2. Similar a the preceding but much lighter” Habitat, whole of western 
ar. Henryi C 
. popetue, 
3. Len ae 3-40; extent 19°00; wing 7:00; tail 4-60. Abov eidelen] black 
ith m 
N 
ish and sank “ Beapulava and wing coverts finely variegated, the 
pattern somewhat irregular, and scarcely Papers of definition A pro- 
nepe larger V-shaped white mark o C. popetue 
to parts dull white, ae i barred with brown, witha a 
ung of erin n the abdomen and under tail coverts. Wings with 
i po 
bars, the last white, extending across both vanes. The female lacks the 
the caudal patch. Habitat, southern portion of western No 
America. C. Texensis Lawr. 
FARTHER OBSERVATIONS ON THE EMBRYOLOGY OF 
LIMULUS, WITH NOTES ON ITS AFFINITIEsS.* 
BY A. S. PACKARD, JR., M.D. 
Iy a recent paper on the “ Embryology of Limulus,” published in 
the “ Memoirs of the Boston Society of Natural History,” I stated 
* Read at the Portland Meeting of the Amer. Assoc. Ady. Sci. 
