MAJELLA. 165 
There seems to have been some contusion as to the character of the eyes of Bucraniuim. 
In the description of the type-species, B. taurifrons, O. P.-Cambr. [P. Z. S. 1881, 
p. 773], it is stated that “the interval between those (the eyes) of the fore-central pair 
is distinctly greater than that between each and the fore-lateral next to it, while that 
between the hind-centrals is considerably less than that between each and the hind- 
lateral next to it,” which cannot be correct. 
In the comparison betwen this genus and Majella (Biol. Ceutr.-Amer., Arachn. Aran. 
i. p. 191), it is stated that “in Bucraniwm those (the eyes) of each of the two rows are 
equidistant,” which is most probably the case, for examples which I identify as B. taurt- 
frons from the Amazons, whence the type-species came, are before me, and the eyes 
of both rows are approximately equidistant. Majella is probably a valid genus, but 
whether this be so or not depends on the characters of forms which may be found in 
the future. In any case, if Majella is to stand Bucranium spinigerum must be referred 
to it, and not to Bucranium, for it presents precisely the same differences from 
B. taurifrons that Majella affinis does. 
Two species have hitherto been described from Central America, and a single 
example only of each is known. If really distinct, they may be recognized thus :— 
a. The anterior pair of tubercles on the abdomen missing from the 
central quadrangle. The posterior pair form, with two lateral 
tubercles, a procurving row of four tubercles. . . . . . . affinis, O. P.-Cambr. 
b. Four large spinigerous tubercles forming a quadrangle on the central 
anterior dorsal area of the abdomen. The anterior pair form 
with another tubercle on each side a recurving row of four 
tubercles. . 20... ee ee ee ee ee ee Spinigera, O. P.-~Cambr. 
1. Majella affinis. (Tab. XI. figg. 6, 6 a, 2.) 
Mojella affinis, O. P.-Cambr. Biol. Centr.-Amer., Arachn. Aran. 1. p. 191, t. 24. figg. 3, 3a-d (¢)’. 
Type, 2, in coll. Godman & Salvin. Total length 4:5 millim. 
Hab. Mexico, Atoyac in Vera Cruz (H. H. Smith '). 
2. Majella spinigera, (Tab. XI. figg. 7, 7a-c, 2.) 
Bucranium spinigerum, O. P.-Cambr. Biol. Centr.-Amer., Arachn. Aran. i. p. 87, t. 11. figg. lla-d 
(¢)’. 
Type, Q immature, in coll. Godman & Salvin. Total length 5 millim. 
Hab. Guatemata (Sarg '). 
This species is very closely allied to, if not identical with, M. affinis. ‘The four 
central tubercles on the anterior portion of the abdomen are, however, clearly marked, 
whereas in JV. affinis the two anterior tubercles are absent. The vulva in the case of 
M. spinigera is not fully matured, while WM. affinis is adult. 
