A Revision of (he genus Tamcus. 279 



It appears to me to be probable that this species and 

 exlricalus have been mixed together not infi'equently, as it 

 is most difficult to separate the type form {i. e. the form that 

 is not spotted on the upper surface) from extricatus, Butler ; 

 both species are to be found at Karachi at the same tmie, 

 as also is nam, but whether they obtain in exactly the same 

 locality together I have been unable to find out. I fear 

 I couid only separate the type form of calUnara from 

 exlricalus by an examination of the prehensores. These 

 in calUnara are very close to balkanica. 



The clasps are very similar, but arc decidedly larger and broader, 

 the sclerites are also larger and heavier in shape and are not so 

 sharply sickle-shaped; the falces are also proportionately larger 

 and are without the reduced apical hook ; the aedoeagus is, how- 

 ever, narrower than in balkanica and slightly longer ; the bristles 

 on both the clasps and the tegumen are much finer and are less 

 numerous. The tectorius is very ample and broad at the base and 

 is curved round at the rear up to the anellus, frontad it is convex 

 and is strengthened at its edge by extra thickened chitin folded 

 over to the upper edge of the organ. 



The androconia are of a long oblong shape with straightish 

 sides, a fah'ly even oval base (with the foot-stalk nearly central), 

 and but slightly curved distally ; there are twelve rows of 

 lamina, of which the sculpturing is very definite and wide 

 apart. 



Tarucus extricatus, Butler. Plates XIV, fig. 5 ; XV, fig. 5, 

 and XIX, fig. 24. 



T. extricatus, Butler, P.Z.S. Lond., 188G, p. 36G, pi. xxxv, 



(J. The type' is a diminutive specimen from Campbell pore 

 dated " 31.v.'85," the abdomen is missing, so we cannot 

 decide the point from the genitalia. 



The colour is hlac blue, of a pale tone, the pattern is 

 composed of fine lines rather than spots; the specimen, 

 however, is very small indeed, so that the pattern is com- 

 pressed into a very small area, and would therefore almost 

 of necessity fall into lines. The type is a dry-season speci- 

 men. Those taken in September and onwards are more 

 violet blue, and the underside pattern, though still fine, 



