The Craspedosomatidse of North America. 91 



broad, apically clavate, with a pointed triangular transparent lamina rising 

 from the base of each. 



Tenth legs much reduced; coxje swollen, on the inner side mth a clavate 

 process hearing a bristle, also a small wart below the process. 



Eleventh legs normal excepting a small wart on the coxa. 



It is to the present genus that the European writers have 

 referred a considerable number of American species. To us it 

 appears that the genus as treated in European works is not a 

 natural one, and that the American species are all generically 

 distinct from any of the European, as far as the sexual characters 

 of either are sufficiently known to give basis for an opinion. To 

 judge by the characters of the ninth male legs the European 

 forms are all more diverged from the primitive than any of the 

 American, and the greater complexity of the genitalia in most of 

 them is in accordance with such an idea. 



HA ASIA. Bollman, 1893 (as subgenus). 

 Bulletin No. 46, U. S. N. Museum, p. 158. 



Eyes entirely absent. 



Antennae slightly clavate, slender, much longer than the width of the body, 

 the seventh joint longer than the sixth. 



Segments with exterior two pairs of setae approximate, rather large. 

 Legs very slender and densely hirsute. 



The establishment of the subgenus appears somewhat prema- 

 ture, as both species placed under it are incompletely described. 

 Craspedosoma troglodytes Latzel, is known only from a female 

 specimen, and no characters of generic value are stated except 

 the above. Craspedosoma mamillatum was described from a 

 male specimen but only a rough sketch of the genitalia is given. 

 From this it would appear that like the open air species of Cras- 

 pedosoma the ninth male legs are reduced to a single joint, with- 

 out a claw. If this is the case, and if troglodytes and mamil- 

 latum are congeneric, Haasia will prove valid. 



CHORDEUMA C. L. Koch, 1847. 

 System der Myriap., p. 51, also p. 124. 

 Eyes well developed, of numerous ocelli (27-28) arranged in triangular 

 patches. 



Antennae very long, twice the diameter of the body, slender, third joint 

 longest. 



Segments -without carinae; setae and tubercles nearly obsolete, somewhat 

 more evident on the posterior end of the body. 



