Mr. J. Blackwall on some species of Araneidea. 297 



also that of the summer bird. The winter plumage of the American 

 species has yet to be determined ; and from the appearance of change 

 in my specimen, may it not prove that the two species are at this 

 season closely approximated to each other ? First specimen obtained 

 April 9, 1846, the second a few days afterwards. 



4. Limosa melanura (B.). In his Supplement Temminck states 

 this bird to occur at Japan ; its range is therefore very wide both to 

 the north and south. 



5. Ardea comata (B.). It is surprising that this beautiful species 

 should not have occurred before in the island. 



6. Sterna Boysii (B.), Sandwich Tern. As this has been recorded 

 as an African bird, its appearance here only adds to its already very 

 wide range. 



7. 5. leucoptera. As this bird is recorded by Temminck in his 

 Supplement as common in Dalmatia, its appearance here is natural. 



8. Fuligula rufina (B.), the Red-crested Pochard. As this species 

 is already recorded amongst the birds of Italy, its appearance at 

 Corfu was to be expected. 



Incorporating therefore these birds into Capt. Drummond's list, 

 the summary may be thus stated : — 



Species 



Birds common to Ionian Islands and Great Britain 163 



Doubtful if same as British species 2 



Presumed to be British, though at first confounded with other"! , 



species, and therefore rendered doubtful J 



European, but not British 48 



Peculiar to Ionian Islands 1 



New species founded by Capt. Drummond, and as yet only found \ . 



in Albania J 



American species now first recorded as European 1 



217 

 In respect to the dates, as some were probably several days in the 

 stufFer's hands before he brought them to me, whilst others were 

 brought fresh, I may observe generally, that where the date is not 

 given, it is to be understood that they were all obtained in the spring 

 of the present year, prior to the month of May. 



XXXI. — Descriptions of some newly discovered species of 

 Araneidea. By John Blackwall, F.L.S. 



Tribe OCTONOCULINA. 



Family Thomisid^e. 



Genus Thomisus, Walck. 



1. Thomisus incertus. 



Length of the male ^th of an inch ; length of the ccphalo- 



thorax T X T ; breadth T \ ; breadth of the abdomen -^ ; length of a 



leg of the first pair j. ; length of a leg of the third pair X. 



Eyes disposed on the anterior part of the cephalo-thorax in 



