624 REV. O. p. CAMBRIDGE ON [NoV. 18 



closely grouped together and varied a little in their relative position, 

 and the Spider itself was smaller. The above examples are in the 

 British Museum, and were kindly submitted to me by Mr. Pocock. 

 Two nests accompanied them, one of which was exactly like the one 

 described (P. Z. S. 1889, p. 250) ; the other was a little different, 

 though not more so than might be quite consistent with the identity 

 of their species. 

 Hah. Bahia. 



Genus Migas, L. Koch. 

 MiGAS PARADOXUS, L. Koch, A.rachn.Austr. i. p. 467, t. xxxvi. f. 1. 



An adult female of this Spider from New Zealand was contained 

 in the collection submitted to me by Mr. F. Taylor, as well as one 

 of its trapdoor nests (Plate LIII. fig. 3) found at the roots of fern. 

 It was about an inch and a half in length, covered with particles of 

 soil and decayed vegetable matter, and protected by a thin wafer-lid 

 attached by a weak silken hinge. I do not believe that the nest of 

 this Spider has been described before, and its being found attached 

 to the roots of fern, where the Spider could obtain a suitable position 

 without itself excavating an independent hole in the soil, is quite in 

 accordance with the absence of those strong spines at the extremity 

 of the falces with which Spiders whose known habits are to excavate 

 their dwellings in the hard soil are invariably furnished. 



Family D r A s s i d ^e. 

 Platyoides, gen. nov. 



Cephalothorax a little longer than broad, broadest behind, flattened 

 above, the caput and thorax being on the same level ; normal inden- 

 tations distinct but not strong, except the thoracic indentation, 

 which is rather long and deep. 



Eyes in two transverse, slightly curved rows, the convexity of which 

 is directed forwards, the anterior row shortest and close to the lower 

 margin of the clypeus ; small and uot greatly differing in size ; the 

 hind centrals slightly smallest and wider apart, as well as forming a 

 longer line than those of the fore central pair. Those of the lateral 

 pairs seated on slight tubercles. The four centrals form a square 

 whose posterior side is longer than the rest. The hind centrals are 

 much nearer to each other than each is to the hind lateral on its 

 side, and the same holds good, though in a less degree, in respect to 

 the fore central eyes. 



Falces long, projecting, abruptly prominent above towards the 

 base, divergent, and thickly furnished with hairs on their inner sides. 

 The fang is long, sharp-pointed, and much curved. 



Legs moderately long, and not differing very greatly in length, 4, 

 2, 1, 3. The coxae and genuae are of rather unusual comparative 

 length, especially the coxae of the fourth pair, which are double the 

 length of those of the first pair, while the genua of the second pair 

 is the longest and that of the third pair the shortest. The tarsi are 

 all very short, and terminate with two curved cla«s, each furnislied 



