A. e. Ot'DF.M AXS. NOTES ON ArviU. 2'>l 



Dorsal side (fio-. 22). Wholly ])roiPctpcl by a shield, 

 beinor a fusion of anterior and i)osterior shields, hardened weak 

 parts above coxae T and 11. and hardened weak parts of abdo- 

 minal margin : the parts al)ove coxae I and II cannot be the 

 ])eritrematal shields, as the peritrenia does not Ijecome dorsal 

 at all. Yet there are three indications of limits between the 

 shields, viz. two between the anterior shield and the supra- 

 coxal shields, and one between the same and the posterior 

 shield. Hair s. There are two kinds of hairs, viz. larpjer ones, 

 rod like, distally hairy (fig. 24), and smaller ones, common 

 bristles. Of the first type we observe one paire on the vertex ; 

 one pair on the shoulders; one pair a little before the level 

 of the shoulders, on the dorsum ; one pair in the posterior 

 half of the anterior shield ; and 4 pair on the posterior half 

 of the posterior shield. — Quite posteriorly usually the pro- 

 truded anus is visible ; and always the horseshoe-shaped c r i- 

 b r u m and the postanal hair ; b o t h a r e dorsal. 



Ventral side (fig. 23). Ï r i t o s t e r n u m very short, 

 a low triangle with wide base, and with short laciniae. 8terno- 

 raetastern o -genital shield wide, with the usual 5 pairs of 

 bristles. The demarcation between this shield and the pedal 

 shields is distinct ; that between the same shield and the ven- 

 tral part only a fine line. All the other shields have fused, 

 so we could name it v e n t r o - a n o - i n g u i n o - m e t a- 

 p o d i o - p e d o -périt r e ra a tal s h i e 1 d. Hairs thereon : 

 behind coxae IV two pairs of minute bristles ; further back- 

 ward and obliquely ontwaard two pairs of larger, yet still 

 small ones ; moreover 8 pairs of long and strong ones ; aside 

 of the anus the known minute bristles. The cribrum and the 

 postanal hair d o r s a 1. J u g u 1 a r shields minute, linear. 

 P e r i t r e m a w li o 1 1 y v e n t r a 1, touching coxae I. 



E pi s to m a (fig. 25 and 20). Dorsal side of capitulum 

 marked with only three pairs of fine lines. Anterior edge of 

 epistoma with 3 long pointed cusps, generally the median one 



