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



not identical ; it is, however, much smaller, and differs both in the 

 length, strength, and direction of the spines as well as in colour. 

 Hah. Australia. 



Gasteracantha canestrinii, sp. n. (Plate XXVI. fig. 2.) 



Female, immature 1 : longitudinal diameter, exclusive of spines, 

 scarcely 2 lines, transverse diameter 2|. 



Spines four, one at each end of the abdomen, the fore and hind 

 outlines of which they carry on to sharp points. These two lateral 

 spines are larger, and very much stronger than the other two, which 

 are at the posterior extremity of the abdomen, and their points a 

 little divergent from each other. 



The abdomen is of a dull blackish-brown hue ; the sigilla normal 

 in size, number, and position, and slightly tinged with reddish brown. 



The cephalothorax is large, but of normal form ; its colour, as 

 well as that of the falces, legs, palpi, and abdominal spines, is a dull 

 brownish yellow. 



From its only known near allies (G. qitadridens, C. L. Koch, and 

 G. pallida ejusd.) it may be known at once by the much greater 

 length and strength of the two lateral spines. 



A single example (received through Frederick Bond, Esq.) from 

 Antigua, 



Gasteracantha rimata, sp. n. (Plate XXVI. fig. 3.) 



Length of the transverse diameter of an immature female, exclu- 

 sive of the spines, 2^ lines, that of the longitudinal diameter being 

 1^ line. 



This Spider is allied to Gasteracantha yeminata, C. L. Koch, 

 but may be distinguished at once by the two lateral spines (on each 

 side) being of different lengths, and diverging from each other ; 

 the posterior (or intermediate) spine is the longest and strongest. 



In G. geminata the lateral spines adhere to each other for some 

 distance, until the sharpening off of the points begins; they are 

 also of equal size, and the anterior spine scarcely differs from the 

 other in length. The posterior spines in the present Spider are also 

 proportionally stronger. 



Several examples, all immature, were received from Ceylon among 

 numerous other Spiders kindly sent to me by Mr. G. II. K. 

 Thwaites. 



Gasteracantha pavesi, n. sp. (Plate XXVI. fig. 4.) 



Length of the transverse diameter of the adult female, exclusive 

 of the spines, 7 lines ; longitudinal diameter 4 lines. 



There will be no difficulty in distinguishing this Spider from all 

 others known to me ; it forms, in fact, the type of quite a new group, 

 whose characteristics are the wide separation between the anterior 

 and intermediate spines, and the close proximity of the latter to the 

 posterior ones, which last are also most abnormally separated. The 

 anterior spines are small, directed straight forwards from the central 

 portion of the very convex fore margin of the abdomen, the interval 



