10 



From Celebes: Chelifer superbus n. sp. 



From Borneo: Chelifer Borneonensis Ell. 



From Christmas Island : Chelifer Mnrrniji Poc. and Pseudochiridium davigerum 

 Thor. 



From Java: Chelifer Rirmaiiicus Thor.; Ch. Kraepelinii Tiillg.; C/i. Javanus 

 Thor.; Ch. Waburgi Tullg. Garijpus Jauunus Tullg. Ideobisiuiu minutuin TuUg. 



From Nicobars: Chelifer concainis n.s|).; Ch. Galalheae n.i^p.; Ch. modestus n. sp.; 

 Ch. Murrayi Poc; Ch. Nicobarensis n. sp.; Ch. plebejus n. sp. ; Ch. rotundus n. sp.; 

 Ch. vermiformis n.sp.; Obisium longicolle Frauenf. Pseudochiridium Thorellii n. sp. 



From Sumatra: Chelifer articnlosns Sim.; Ch. bifissus Sim.; Ch. nirmanicus 

 Thor.; Ch. nodulimamis Tom.; Ch. Sumatranus Thor.; Ch. Thorellii Balz. Chthonius 

 curvidigitatus Sim. Gary pus irrugatus Sim. 



From Pulu Pinang: Chelifer Balzanii Thor.; Ch. hians Thor. 



From Malay Peninsula: Chelifer cocophilus Sim.; Ch. plebejus Sim. Garypus 

 elegans Sim. 



From Burma: Chelifer Birmanicus Thor.; Ch. bisulcns Thor.; Ch. Hansenii 

 Thor.; C/i. orites Thor.; Cli. plebejus n. sp. Olpium Birmanie um n.sp. Pseudochiri- 

 dium davigerum Thor. 



From Siam; Chelifer Mortensenii n. sp. Chthonius terribilis n. sp. Garypinus 

 nobilis n.sp. Garypus irrugatus Sim. Ideoroncus laminatus n.sp.; /. Siamensis n.sp. 



From India: Chelifer Indiens n.sp.; Ch. orites Thor. af. EH.; Olpium biareola- 

 tum Tom. Obisiun^ pusio Kolen. 



In ships with rice in Copenhagen; Chelifer depressns CK.; Ch. navigator n.sp.; 

 Ch. nodosus Schranck; Ch. subruber Sim. 



Without locality: Chelifer bidens Steck.; Ch. Helferi Steck.; Ch. monitor n.sp. 

 Chthonius desideratus Steck.; Cht. Kockii Steck. Obisium trifidum Steck. 



2. Antennae. 



Introductory Remarks. 



Before giving a few historical remarks I am going to set forth as an intro- 

 duction the main-points in the anatomy of these organs. The last portion of this 

 chapter will be given to studies on the differences found in all the appendages of 

 these organs in the various forms of the Chelonethi. 



The antennae consist always of two joints, forming a chela with each other, 

 and are articulated under the front margin of the head, and connected with this 

 as well as with the maxillae by a soft articulate-membrane. They vary in size as 

 well as in shape in the different genera, and so do the more or less complex 

 organs with which they are adorned. In some forms we find the fingers gaping 

 when closed, while the two fingers of other forms almost touch each other in their 

 whole length when closed but with their li])s crossing each other; both fingers 



