I'liK \i VKM Ai'HhA i\ riiK \isi'i;.\i,iAN' Mi'SKi'M — r.iirir.K \l A \ V. 1M7 



Oistaiicc i)i't\vft'n tlie eyes e((U}il to ahDiit twice the tliaiiieter of 

 one of lliiMii. Anteiinal fossa? shallow. Distance between the 

 antennal sockets equal to tlie lensfd ol" the tlii'ce [noximal 

 joints. .\ntennff> short, not reachinn" ( (^ ) the posterior niai'i^in 

 of the first tero-ite. The three hasaJ joints almost bare, the 

 following gradually more pilose. Foui* sensory cones. Mici'o- 

 metrical nieasiirements of joints: —1st jointO. 640 ni/m ; 2n(l, 

 0.800 m in ; 3rd, 0.704 m'^m ; 4th, 0.672 m/m ; 5th, O.tUO 

 m/m; ()tii, 0.512 m/m ; 7th and 8th, 0.128 m/m: total length. 

 4.096. Diameter of 2nd joint 0.6+0 m 'in ; of 6tli, 0.672 mm. 



'IMie giiatlicichilariuui, and particularly the chitinized cap 

 which stands in froiit of the laminas linguales, are identical 

 with the sketch given by Vom Rath''-^ of HpirohnJu.'^ pJiraniifi. 

 The middle plate of the cap is anchor-shaped ; t.lie mentum is 

 <-()mposed of a single plate ; the outer angles of the hypostoma 

 aiv soinewliMt more (jnadrate than in V^om KatlTs figure. 



First tergite smooth ; its evenly rounded sides do iiot reach 

 the level of the ventral surface of the body ; the marginal 

 snlcns is short. 



Scobinas present from about the tenth to about the thii'ty- 

 nintli segment. The dimple (PI. xvii., fig. 59) is very short 

 and wide open anteriorly, being cut in the anterior margin of 

 the segment; the posterior tield is more or less conical with 

 rounded end ; it is covered with dense and minute transverse 

 striae. On the twenty-fifth zonite the distance between the 

 dimples is about equal to twice the bi'eadth of one of the striate 

 fields. Posterior mai-gin of segments shallowly excised in 

 correspondaiice with the scobinas of the following segment. 



The anterior concealed part of the prozonites is smooth ; 

 the |)Osterior part is adorned dorsally with a microscopical 

 network of minute, ij'i-egular stria", which die out, although not 

 entirely, on the metazonite. Under the microscope, the latter 

 apjiears spread with scarcely distinct punctures. No tranverse 

 sutui-e is seen between pro- and metazonite. On the sides (PI. 

 xviii., tig. 60), the prozonite show distinct striae, two or three 

 of which reach above the pore; the upper stria? are more or 



\'oin R:itli Loc. cif., li^- 'M- 



