HANSEN AND SÖRENSEN, THE TARTARIDES. 51 



Coiispectiis of the Species. 



A. Males. 



All setse on the upper surface of the body and the legs 



simple, thin, acute. 



a. Terminal abdominal segment posteriorly produced into 



a long subconical process. Flagellum with three pro- 



tuberances from its posterior end. 



3. T. siamensis n. sp. 

 p. Terminal abdominal segment at most produced into a 



very short protuberance. Flagellum terminates as a 



simple process or has its posterior end broadly rounded. 



§. First legs with the foot slightly more than half as 



long as tibia. Main piece of flagellum a little 



longer than broad, narrowing posteriorly, without 



brush on the upper surface. 



2. T. suhoculaius Poc. 

 §§. First legs with the foot slightly more than tw^o 

 thirds as long as tibia. Main piece of flagellum 

 two thirds as broad as long, posteriorly produced 

 into a rather long narrow portion, with a brush 

 on the distal part of its upper surface. 



4. T. procerus n. sp. 

 §§§. First legs with the foot two thirds as long as tibia. 



Main piece of flagellum as broad as long, with the 

 posterior transverse margin very long and feebly 

 convex; no brush on the upper surface. 



5. T. luzonicus n. sp. 

 Setse on the upper surface of the body and on the upper 

 margin of femur, patella and tibia of the three posterior 

 pairs of walking legs subclavate. 8. T. claviger n. sp. 



B. Females^ 



Head without real eyes, at most with a påle or whitish 

 patch on each side. 



^ In this key only the adult specimenö of T. siamensis, T. suboculatus, 

 T. modestus, T. procerus and T. luzonicus have been taken into aceount; 

 the characters utilized here as to these five species do not agree com- 

 pletely with the features foiind in immatnre speciinens. The characters 

 pointed out as to the four other species are independent of age and sex and 

 therefore certainly found both in immatnre and adult specimens. 



