MISUMENOPS. 145 
M. americana, in which the chitinous plate is rectangular, and not semicircular as in 
M. pallens. Amongst the specimens identified by KE. Simon as VM. americana, Keys., 
from St. Vincent, are examples with the rectangular plate and others with a deeply 
emarginate semicircular plate. Of this latter form there is also in the Godman and 
Salvin collection an example from Guatemala. It is quite possible that these three 
forms of vulva belong to one and the same species and equally possible that they 
do not. It entirely depends on the constancy of the differences and some distinctive 
character in the males. We give figures of the vulva of M. americana (figg. 8, 8 a) 
and JM, pallens, Keys. (figg. 9, 9 a), for comparison. 
8. Misumenops dubius. (Tab. X. fige. 10, 10a, 4, 2.) 
Misumena dubia, Keys. Spinn. Amer., Later. p. 90, t. 2. fig. 48 (¢)*; N. Banks, Proc. Calif. 
Acad. Sci. (3) 1. p. 261%. 
Misumena ornata, O. P.-Cambr. Biol. Centr.-Amer., Arachn. Aran. i. p. 119, t. 15. figg. 11, 
11 a-c (2), fig. 13 (@ var.) °. 
Type, 2, of M. dubia, Keys., in coll. Keyserling, Mus. Brit. Total length 9°7 millim. 
Type, 2, of M. ornata, O. P.-Cambr., in coll. Godman & Salvin. Total length 9 millim. 
Hab. Mexico1, Hacienda de la Imagen and Amula, both in Guerrero (H. H. 
Sinith *), 'Tepic ?. 
The figures of the eyes are taken from the type of WZ. ornata, that of the vulva from 
the type of I. dubia. 
9. Misumenops mexicanus. 
Misumena mexicana, Keys. Spinn. Amer., Later. p. 89, t. 2. fig. 47 (2)'; N. Banks, Proc. Calif. 
Acad, Sci. (3) i. p. 261°. 
Type, @, in coll. E. Simon. Total length 5:2 millim. 
Hab. Mexico}, Tepic °. 
I have not seen a specimen of this or of the following species. 
10. Misumenops gracilis. 
Misumena gracilis, Keys. Spinn. Amer., Later. p. 92, t. 2. fig. 49 (?)'; N. Banks, Proc. Calii. 
Acad. Sci. (3) i. p. 2617. 
Type, 2, in coll. E. Simon. Total length 8-2 millim. 
Hab. Mexico 1, Tepic ?. 
11. Misumenops splendens. 
Misumena splendens, Keys. Spinn. Amer., Later. p. 93, t. 2. fig. 50 (?)*s 
Type, @,in coll. E. Simon. Total length 10 millim. 
Hab. Mexico}. 
BIOL. CENTR.-AMER., Arachn. Aran., Vol. II., June 1900. vy 
