Superfamily Avicularioidea 



Pachylomerus turris (P. tur'ris). — Only the female of this 

 species has been observed. It is smaller than the preceding 

 species; the body measures nearly three fourths inch in length. 

 The anterior row of eyes is nearly or quite as long as the posterior 

 row, the four lateral eyes forming a rectangle. A specimen which 

 1 collected in Florida made an egg-sac, thus showing that it was an 

 adult. The egg-sac was made near the bottom of the tunnel. 



Pachylomerus theveneti (P. thev-e-ne'ti). — This is the only 

 species of Pachylomerus as yet described from the Pacific Coast. 

 The female is about three fourths inch in length. The lateral 

 eyes of each side are nearly contiguous. In the specimen de- 

 scribed the labium was armed at the tip with a single series of 

 six or seven spines. But a study of our Eastern forms shows that 

 the armature of the labium varies greatly in different individu- 

 als of the same species. 



This is the Hebestatis theveneti of Simon. 



Genus CYCLOCOSMIA (Cy-clo-cos'mi-a) 



There are two genera of tarantulas, one, Chorifops, represent- 

 ed by a single species found in Mexico, and the other, Cyclocos- 

 mia, represented by two species, 

 one from China and one from 

 the southern United States, 

 that differ from all others by 

 the remarkable form of the 

 abdomen, the caudal end of 

 which is truncate and discoidal 

 (Fig. 221). In Cyclocosmia the Fig . 22I . cyclocosmia truncata 

 tibia of the third pair of legs 



lacks the depression characteristic of the two preceding genera, 

 and the eyes are not widely separated. 



Only females of this genus have been described. It is quite 

 possible that the males do not have the abdomen truncate. 



Cyclocosmia truncata (C. trun-ca'ta). — I have not seen this 

 species; and can, therefore, only copy the figures and observa- 

 tions of Hentz, who described the species. He states that the 

 abdomen is cylindrical, suddenly truncated at the end. and callous 

 at that place, with concentric grooves and six circular impres- 

 sions (Fig. 221). 



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