474 Mr. White on new or little known Arachnida. 



Abdomen oblong, smooth, or, at most, only shagreened, with four 

 distinct spinnerets. 



Legs, at least first two pairs, very long. 



Our specimen, in this respect, was much mutilated : in Mr. Darwin's 

 MSS. I find that the first pair of legs is much the longest, then 

 the second and fourth, and that the third is shortest. 



"Web very regular, nearly horizontal, with concentric circles; 

 beneath, but sometimes above, the concentric web, there is an 

 irregular or thin tissue of network ; the animal rests in the 

 centre, on the inferior surface : abdomen brilliant ; the red co- 

 lour like a ruby with a bright light behind." The subgeneric 

 name is one proposed for it in Mr. Darwin's MSS. — Brit. Mus. 



Hab. near Rio de Janeiro. May 1832. Charles Darwin, Esq., 

 F.R.S., etc. 



2. Linyphia (?) leucosternon, n. s. 



Body and sternum shagreened ; the sternum and body above gray- 

 ish white ; body beneath grayish black, spotted with white (there 

 are four principal spots in the middle). 



Cephalothorax, palpi and legs yellowish, the joints of the latter 

 darker ; cephalothorax behind margined with whitish ; the sides 

 hairy : claws of chelicera port- wine colour : eyes black. 



Chelicera short, swollen, smooth, nearly of equal breadth through- 

 out, with a few (3) teeth inside at the end, and armed with a 

 short strong claw folding inwards. 



Eyes eight, not very unequal in size, arranged in two transverse 

 lines, the first bending outwards and shorter than the second ; 

 the lateral eyes are the closest and oblique ; the two central of 

 each line form nearly a square. 



Maxillae somewhat spatulate. 



Palpi with the second and fifth joints nearly equal, the fifth being 

 somewhat hairy at end, and apparently terminating in a short 

 claw. 



Mentum semioval. 



Sternum cordato- sagittate. 



Cephalothorax narrowed and truncated in front, dilated and nearly 

 as broad as abdomen behind ; this is of a long, oval shape, over- 

 lapping the cephalothorax at the base. The legs are long and 

 slender ; first pair the longest, then the second, the third being 

 much shorter than the fourth. 



Spinnerets distinct. 



Hab. Brazil, near Rio de Janeiro. C. Darwin, Esq. 



3. Epeira {Singa^) leucogramma, n. s. 



Cephalothorax ferruginous; space about the eyes dark brown; 

 body and legs grayish brown, darkest on the sides of the body ; 

 body above with three white longitudinal lines proceeding from 

 the base and terminating just before the tip ; the middle one 



* A subgenus founded by Koch, with the beautiful European Epeira 

 Herii of Hahn as the first species. (Uebers. des Arachnidensyst. p. 6.) 



