Species of Opisthophthalmiis. 163 



proximal half granular ; interocular area in 5 entirely smooth or 

 with a few minute granules anteriorly, in $ finely granular through- 

 out, except quite posteriorly on the convexities ; last abdominal 

 sternite in 2 coarsely granular in the middle. In the $ the terga, 

 at least the anterior ones, are more or less granular, while the hands 

 are almost devoid of isolated granules on the inner basal portion of 

 the upper surface, resembling those of the previous specimens (e). 

 Secondary keels of hands in $ often very distinct and almost 

 smooth. Tarsi with 0-1 external spines below in addition to the 

 four on the outer terminal lobe (as in glabrifrons generally). Colour 

 of the lighter parts more ochraceous than reddish. Large, up to 

 101 mm. in length. Although these specimens differ remarkably from 

 the normal forms, I cannot consider them other than a well-marked 

 variety of the widely distributed and variable ylabrifrons. The 

 position of the median eyes is very liable to vary in local races 

 generally, while both in this character and in the smoothness of the 

 finger-keel this form is strongly approached by the previous speci- 

 mens (under (e) above), which are intermediate between the normal 

 form and the specimens here under consideration. The remaining 

 differences are of no specific value. (S. A. M. Reg. No. 2999). 



The form described by Thorell as 0. prcedo evidently closely 

 resembles the form (/) but differs in having the finger-keel granulated 

 as in the normal glabrifrons. The type specimen has been elabo- 

 rately described by Thorell and again quite recently by Kraepelin. 

 I cannot, however, discover from their descriptions a single reason for 

 separating this form from glabrifrons, although Kraepelin seems to 

 think it more nearly related to pugnax. The characters which these 

 authors appear to rely upon for separating prcedo from glabrifrons 

 are the finely granular interocular area, the fewer pectinal teeth 

 (14-15) and the stronger secondary crests of the hands in the 

 former form. The position of the median eyes is also farther back, 

 as in the form (/) above, and the hands are slightly narrower. Now 

 it is quite impossible to utilise these characters alone for separating 

 the species from glabrifrons, and unless prcedo possesses other and 

 more reliable differential characters than those enumerated which 

 is highly improbable, for they would have been mentioned it must 

 be considered merely as a variety of glabrifrons, intermediate 

 between the normal form and the form (/'). 



The granulation of the first four abdominal sternites in the $ 

 varies much. In the males described under (/) all these sternites 

 are much roughened, also in the mesial part, being densely and 

 transversely wrinkled ; the four sternites may be almost entirely 



12 



