APPENDIX. 535 



4. TH03USUS borealis (n. s.), Nob. 



Fuscus : mandibulis validis, glabris : thorace subcylin- 

 drico, convexo, glabro : pedibus ferrugineis, subelon- 

 gatis, subvillosis, spinisque raris munitis; pari primo, 

 secundo, et quarto subaequalibus, tertio caeteris breviori : 

 cute abdominis ovati transverse rugosa, granulosa, pilis- 

 que raris, albido-flavis tecta; his ad anum ventremque 

 frequentioribus. 



5. Thomisus corona (n. s.), Nob. 



Glaber : thorace subcirculari, subfusco, fascia media 

 albida ad frontem latiori, coronaeque effigiem simulante : 

 mandibulis albidis : pedum pari primo et secundo vali- 

 dis, plus duplo caeteris majoribus ; tertio breviori : 

 femoribus subpubescentibus : tarsis subtus setosis, setis 

 discretis, biseriatim positis : abdomine globoso, albido. 



This species agrees very nearly with Hahn's Th. diade- 

 ma, except in the form of the abdomen, which in the latter 

 is angular, having posteriorly on each side a projecting 

 lobe ; whilst in Th. corona it is globular. Since Hahn 

 expressly states that the male, although much smaller, 

 exactly resembles the female, both in form and colour, 

 the difference between his specimen and ours cannot be 

 sexual. Moreover, Hahn takes no notice of the singu- 

 lar, white, coronet-shaped mark in the front of the head, 

 in the upper projecting part of which the brilliant eyes 

 of the animal shew like the jewels of a diadem. The 

 four lateral eyes, as in Hahn's species, are supported on 

 little projecting knobs. 



M M 4 



