Superfamily Avicularioidea 



The remaining figures illustrate the different forms of nests that 

 have the door of the wafer type as follows: c, a single-door, un- 

 branched wafer nest; d, a single-door, branched wafer nest; e, 

 a double-door, unbranched wafer nest, and ei, the lower door 

 of the same; and/, g, and gi, three double-door, branched wafer 

 nests, / and g differing in the form of the second door, shown at 

 //, and g2. 



In the case of several of our genera, the habits are unknown; 

 the species having been described from specimens that were 

 collected without observations being made on their habits. 

 Students living in the regions where these spiders occur have 

 excellent opportunities for adding to our knowledge of the ways 

 of these remarkable creatures. 



The described species of our fauna represent eight genera. 

 These can be separated by the following table. 



TABLE OF GENERA OF THE CTENIZIN^E 



■ 



A. Tibia of the third pair of legs with a deep depression in the 

 basal part of the upper surface. P. 236. Pachylomerus 

 AA. Tibia of the third pair of legs normal. 



B. Abdomen truncate at the end, the end discoidal. P. 2 $7. 



Cyclocosmia 

 BB. Abdomen normal, the caudal end rounded. 



C. Tarsi of females without a scopula, but with strong 

 spine; claws armed with a few teeth, which are in a 

 single series. P. 238. Bothriocyrtum 



CC. At least the fore tarsi with a scopula, but sometimes 

 poorly developed in the males; claws frequently armed 

 with numerous teeth, which are frequently in two 

 series. P. 238. 

 D. Posterior sigilla large, near together, and widely 

 distant from the margin of the sternum. 

 E. Chelicerae furnished on the inside, at the apex, 

 with a blunt and toothed process. Claws, at 

 least the anterior ones, unidentate at base. 

 P. 239. Myrmeciophila 



EE. Cheliceras rounded at the apex, or with the in- 

 terior angle slightly convex, not produced, claws 

 pluridentate. P. 240. Eutychides 



235 



