notes on millipedes. 47 



3rd leg length 73 mm. 



4th „ „ 82 „ 



Total span (across 2nd pair of legs from tip to tip) 

 1 94 mm. ( = 7f inches). 



This species has been recorded from Sumatra, Java, Am- 

 boina, etc. 



16. Thelcticopis modesta, Thorell. 



I obtained this species in Penang in 1896. 



Order Opiliones. 

 The Harvest Spiders. 



Animals superficially resembling the true Spiders ; like them 

 they have four pairs of legs, of similar construction, and two 

 modified anterior pairs of limbs ; one (the palpi) not pincer-like, 

 but sometimes capable of folding back on themselves, sometimes 

 armed with spines, and composed of six segments, including the 

 basal segment or maxilla, except in the Ricinulei which have five 

 segments ; and one (the mandibles) pincer-like and composed of 

 three segments, except in the Ricinulei which have but two. 



The abdomen is segmented, composed of from 3 to 8 seg- 

 ments. In the true spiders the breathing apparatus consists 

 sometimes of four pairs of lung-sacs, but generally the hinder 

 pair are replaced by tracheal tubes ; in the harvest spiders the 

 breathing apparatus consists of tracheal tubes, opening by one 

 pair of orifices situated on the sternal plate of the abdomen. 



There are no spinning' glands. 



Family nc opod 'idee. 



1. Gnonudus rostratus, Thorell. (Ann. Mus. Genov. xxx, p. 378. 



1890); found in Penang. 



2. Oncopus fecu, Thorell. (Ann. Mus. Genov. xxx, p. 375, 



' [1890]) ; found in Penang. 



3. Oncopus truncatus, Thorell. (Ann. Mus. Genov. xxx, p. 764, 



[1890]) ; found in Singapore. 



" The British Museum has from time to time received a 

 number of specimens from Mr. H. N. Ridley " (A. -j- M. N. H. 



