284 REV. O. P. CAMBRIDGE ON NEW ARANEIDEA. [Mar. 4, 



brown, marked and spotted with yellow. The sigilla are all red- 

 brown, very small, especially the anterior ones, which are 10 in 

 number. The cephalothorax is black, and the legs are black-brown. 

 Hab. Mauritius. (Received from R. H. Meade, Esq., of Brad- 

 ford.) Possibly this is Gasteracantha (Plectana) mauricia, Walch. 



Gasteracantha callida, sp. n. (Plate XXVI. fig. 7.) 



Length of the transverse diameter of the adult female, exclusive 

 of the spines, 5| lines ; length of the longitudinal diameter 3 lines. 



This is another species of the "fornicata" group: the anterior 

 margin of the abdomen between the two foremost spines forms a 

 nearly even curve ; the foremost spines are short and very slightly 

 (in one example not at all) directed forwards. The intermediate spines 

 are stout, scarcely curved, double the length of the anteriors, rapidly 

 tapering from base to point, and but slightly directed backwards. 

 The posterior spines are as long, but not so strong, as the intermediate 

 ones ; in one example, however, the posterior spines were shorter. 



The cephalothorax is black, the legs black-brown, and the abdo- 

 men yellow-brown, the spines reddish thrown, and the sigilla small 

 and like the spines in colour. The different form of the fore mar- 

 gin of the abdomen and the stouter intermediate spines will at ouce 

 distinguish this Spider from the next species, G.flebilis. 



Hab. Trinidad. 



Gasteracantha flebilis, sp. n. (Plate XXVI. fig. 8.) 



Length of the transverse diameter of the female (adult ?), exclusive 

 of the spines, 4 lines ; longitudinal diameter slightly over 2 lines. 



This spider is allied to G. fornicata, C. L. Koch ; it is, however, 

 much smaller ; and though it may possibly be an immature example 

 of that species, I am inclined to think it is distinct. Owing to the 

 specimen being pinned and dry, I am unable to say positively whether 

 it is adult or not ; but I think it is. The anterior spines are short 

 and directed a little forwards ; the intermediate ones stout, not very 

 tapering, double the length of the anterior, and with a distinctly 

 backward direction. The cephalothorax, falces, and legs are deep 

 brown-black ; the abdomen dull brown, with two transverse black 

 bands, of which the anterior is the broadest : the posterior band ap- 

 peared to be interrupted in the middle ; but as the pin had passed 

 through that point, this is not certain ; the spines are red-brown. 



Hab. Sarawak. 



Gasteracantha harpax, sp. n. (Plate XXVI. fig. 9.) 



Length of the transverse diameter of the adult female, exclusive 

 of the spines, rather over 5£ lines; length of longitudinal diameter 

 rather more than 3 lines. 



This Spider is also of the "fornicata" group. It may be easily 

 known by the weakness of the intermediate spines, which are scarcely 

 double the length of the anteriors, and no stronger, if, indeed, quite 

 so strong, and project at right angles to the longitudinal axis of the 



