432 bulletin: museum of comparative zoology. 



(ad 7:6); sparsely hirsute at base, the hairs becoming finer and shorter 

 and more dense distad. 



Claws of the prehensorial feet when closed not fully attaining the 

 front margin of head; all joints unarmed; prosternum wider than 

 long in the ratio 11: 8; chitinous lines distinctly developed; marked 

 with a distinct median sulcus; anterior median margin only a little 

 angularly depressed mesially; almost glabrous, bearing but a few 

 scattered hairs. 



Anterior prescuta very short, others short. 



Spiracles round or the first few weakly obliquely subelliptical ; the 

 first one clearly larger than the second; first or anterior ones large, 

 decreasing caudad, the posterior ones becoming small. 



Each ventral plate with a deep longitudinal median sulcus ; anterior 

 sterna angularly extended caudad at middle in a process which fits 

 into a corresponding pit in the succeeding plate. Ventral pores 

 present on anterior plates; few in number and arranged in a narrow 

 transverse band extending across plate between middle and caudal 

 margin, the band widest at median line and running out to a point on 

 each side. 



Last ventral plate very wide ; sides converging caudad, appearing a 

 little convex; caudal margin straight; sparsely hirsute. Coxo- 

 pleurae with two large pits on each side, these covered beneath edge 

 of ventral plate. 



Anal legs without a claw. In the female thicker and much longer 

 than the penult; sparsely hirsute with long hairs excepting for limited 

 areas on ventral surfaces of joints which are densely clothed with 

 patches of shorter hairs (Plate 3, fig. 2). Anal legs in male strongly 

 crassate. 



Anal pores small, concealed in ventral view. 



Pairs of legs in female 53-55; in male 51. 



Length of female 16 mm.; of male 12.5 mm. 



Localities. — Taylor's, S. C; Johnson City, Tenn. 



At Johnson City a female, described above, was taken with her 

 young, about which her body was coiled. 



Timpina, gen. nov. 



Prebasal plate in type absent; frontal suture absent. Basal plate 

 wide. Antennae of moderate length; conspicuously flattened; atten- 

 uated from base distad; dorsal plates bisulcate. 



