ox riYE NEW SPECIES OF GONYLEPi'ES. 151 



guished Freuch author is concerned, that he gives tliem different 

 names and separate notices in his valuable work. 



EXPLANATION OF THE PLATES. 



Plate VI. 

 Fig. 1. Cyclura venosa, seen from above, natural size. 



2. The same, enlarged. 



3. The same, side view, natural size. 



4. The same, enlarged. 

 6. Antennte and mouth. 



6. Hind leg. 



7. Front leg. 



Plate VIL 



8. Dynamene Montagui, normal form, enlarged. 



9. Bynamene Montagui, showing constriction of front segments. 



10. Bynamene varians, normal form, enlarged. 



11. Bynaniene varians, constricted form. 



12. Idotea pelagica. 



Descriptions of five new Species of Gonyleptes. 

 By Akthub a. BuTLEE, F.L.S., F.Z.S., &c. 



[Eead May 7, 1874.] 

 (Plate VIII.) 



Since the publication of my Monograph of the species of this in- 

 teresting genus of Harvest- Spiders, the collection of the British 

 Museum has been enriched by the presentation and purchase of 

 several additional new species, which I now propose to describe. 



1. Gonyleptes terribilis, n. sp. (fig. 1). 



In some respects similar to G. armillatus. 



Colours : piceous ; the sutures, prothoracic region, and sternal surface 

 of cephalothorax dull testaceous ; palpi and chelae testaceous ; three 

 front pairs of legs luteous ; coxae and femora of hind legs black ; tibiae 

 and tarsi piceous. 



Male. Above, oculiferous tubercle slightly prominent, obtusely bispi- 

 nose, with a minute granule in front of each little spine ; behind the 

 oculiferous tubercle and in front of the transverse suture are two 

 series of minute granules, the anterior row composed of four, the pos- 

 terior of two; central area of cephalothorax separated into four divi- 

 sions by the sutures, and covered with minute granules ; margined by 

 a series of small irregular tubercles, gradually increasing in size to- 



