432 MR. H. E. HOGG ON SPIDEES 



than the first ; the inferior pair are close together behind the superior, half the length 

 of the basal joint of the latter. 



The measurements (in millimetres) are as follows : — 



Long. Broad. 



n 1 1 i.1 1/. i 7 h\ front. 



Cephalothorax ] 6 ■; 



Abdomen 18 13 



r 5 horizontally 



j_ 8 from base to tip. 



,, -,., . r 5 horizontally 



Mandibles J 



Trocliauter Patella Metatarsus 



Coxa. & femur. & tibia. & tarsus. 



Legs 1. 7 14 14 13 . = 48 



2. 6 12 12 12 = 42 



3. 6 11 10 12 = 39 



4. 6 14 14 16 = 50 



Palpi 4 10 10 6 = 30 



Superior spinnerets 4, 2i, 2i = 9, inferior 2. 



This would seem to be rather close to Kulczynski's Selenocosmia similis, which he 

 considered perhaps the same as S. hrmesta Hirst, var. femoralis Kulc. (Exp. Scient. 

 Neerlandaise a la N. Guinea, vol. v. part 4, p. 424) *. Although the cephalothorax, 

 legs, and palpi are about the same length in each, the patella+tibia and metatarsus 

 + tarsus of the two forms mentioned above are much longer than the femur, instead 

 of the same length or shorter. Also in the present species there are spines on all 

 the metatarsi, whereas in Kulczynski's there are none on metatarsus i. The abdomen 

 in his species is dark chestnut instead of pale, and the lip and maxillae are darker in 

 parts instead of the same bright colour all over. Therefore I believe this to be 

 a new species. 



An examination of the stridulating organ of this spider shows it to be neither the 

 bacilliform type of the Selenocosmiinse nor the plumose hair type of Mr. Pocock's 

 Ornithoctoninse. The mandibular setse are hard, upright, sharp-pointed bristles, 

 situated at the basal end of the mandible just below the mandibular fringe ; while 

 those on the corresponding side of the maxillae are about twice as long and stout, 

 sharply pointed at the end, and nearly recumbent. 



* I have since examined the t;ype-specimen of Mr. Hirst's jS". honesta, and it differs in many points from 

 Prof. Kulczynski's description of his S. femoralis. 



