On the Lateral Eyes in the (lali'odidic. ol7 



fulvou? coloration of tlie wini^s ; the corneou.s knob at the 

 extreme base of the inner niar^'in uf the posterior win^rs of the 

 male is small, ronntled, and pale in eolonr ; the costal area in 

 these wings slightly dilated for a short distance near the base. 

 ^ Length of body, c? 40-48 niillim., ? 42-54 milliin. 

 Expanse of wings, ^ 93-110 milliin., $ 95-131 mlUim. ; 

 breatlth of anterior wing 12-18 niillim. 



A|)parently common. Thirteen exami)les are before mo, 

 and 1 have seen at least fifty. Probably the largest species 

 of Mijnneleon as restricted. In form and general structure, 

 and even in the markings of the head and thorax, evidently 

 allied to .1/. quitiqueinacidatas, Ilag., M. pofi/zonus, Gerst., 

 and M. let/mlis, Walk, (partim), of the African continent, 

 but abundantly distinct, hi my analysis of Walker's species 

 (Journ. Linn. Soc, Zool. ix. p. 279) I stated that, of the 

 examples named by him, the one bearing the label " lethalis " 

 is identical with (luinqaeinaculatus^ and that the other two 

 equal Formicaleo leucospilos^ ILvg. Walker's description 

 was apparently drawn up from these latter. 



LXI. — Lateral Ei/es in the (j(i}\QOi\ii\.dd. By TI. ^L Bernard, 

 M.A.Cantab., V.L.S., F.Z.S. (from the lluxley Research 

 Laboratory, South Kensington). 



The Galeodidaj have liitlierto been thouglit to be unique 

 among the larger Arachnids in not possessing lateral or 

 accessory eyes. Such eyes, however, occur in all the speci- 

 mens which I have so far examined, but in a position which 

 fully accounts for their having been overlooked. 



Passing the Arachnids in review, we have what I am now 

 inclined to consider as the most primitive condition in the 

 IMygalidai. The ocular tubercle persists in this family, with 

 the paired median eyes and the accessory eyes grouped upon 

 it. As I have elsewhere* explained, the ocular tubercle may 

 be considered to be the remains of the original dorsal surface, 

 left like an island between the cephalic lobes, which have 

 elsewhere met in the middle line. 



In other Araneids the ocular tubercle is obliterated, and the 

 eyes are scattered about on the forehead. 



In Phrynus the ocular tubercle persists in its original 

 position at the anterior end of the suture between the cephalic 

 lobes. The accessory eyes have apparently loandered off 

 laterally, and are found as a small group on each side, halfway 



* "On the Head of G'w/tw/^'.s and tlie Proceplialic Lobes of Avaelinidiui 

 Embryos," Zool. Auz. uu. 4:iG (l8'J3j. 



Ann. i& Mag. N. Hist. Ser. 6. Vol. xiii. 35 



