Explanation <>/ Plates III and IV 169 



Pig. 4 c. Ventral skin of an immature male, treated with caustic potash, somewhat pressed down, 

 froni below; the apical part of abdomen omitted; x 18. — in.=l. arculi genitales, = the first 

 abdominal sternite ; :i I. lateral separate portion of the second sternite ; 9. ninth sternite. 



PLATE IV. 



Fig. 1. J'urcellia i//tigtraus n. gen., n. sp. (continued). 



Male and female. 

 Fiii. la. Female, from above; x 11/2. 



Fic. lb. Body of the male, from lielow ; x 18. — 1, 4i <^', •''• the respective abdominal sternites ; 

 ('. operculum anale ; /.V. ninth tergite. 



Fig. If. Left antenna (of the male), from the outer side; x 26. 



Fig. 1 d. The two distal joints of the left antenna (of the male), obliquely from the lower and 

 inner side ; x 26. 



Fig. 1 e. Distal portion of the same antenna ; x 70. 



Fig. If. Left mandible, with its palpus (of a male), from the outer side; x 26. 



Fig. 1 <j. Distal portion of )>ais manducatoria of the mandible shown in the preceding figure ; x 104. 



Fig. 1 /(. Middle portion of the anterior half of the body of an adult male, from below; x 32. — 

 m. arculi genitales. 



Fig. 1 i. Posterior part of the abdomen of an adult male, from below ; x 25. 



Fig. Ij. Middle portion of the anterior half of the body of an adult female, from below; x 32. — 

 it. terminal part of pars manducatoria of the mandibles ; _/'. angle limiting stomotheca in front ; 

 m. arculi genitales ; r. operculum genitale. 



Fig. 1 A:. Posterior part of the abdomen of an adult female, from below; x 19. 



Fig. 1/. Distal part of the first left walking leg (of an adult male), from the outer side; x 26. 



s. sensory setae. 



Fig. I m. Last left walking leg, coxa omitted, of an adult male, from the outer side; x 26. 



rn. metatarsus. 



Fig. I )i. Last left walking leg, coxa omitted, of an adult female, from the outer side ; x 26. 



Fig. 1 o. Penis, without its sheath, from above; x 107. — m. muscles; o. place for the orifice of 

 the seminal duct. 



Fig. I p. Penis, from below; x 107. — m. muscles. 



Fig. I q. Penis, from the right side; x 107. 



Fig. 1 r. The ventral skeleton together with the major part of the genital organs of an adult 

 female; from above; x 13; the skeleton of cephalothorax was completely cleaned, so that the 

 anterior and posterior walls of the coxse are seen as septa — the two anterior pairs of cox£e 

 being movable, the septa in question are double. — a. sheath of ovipositor with its two pairs 

 of muscles : tnd. musculi dilatatores, and mr. musculi retractores ; u. uterus, from the posterior 

 end of which the oviduct proceeds to the posterior end of ovipositor; w. chitinous wall forming 

 a roof above the sexual orifice and the arculi. 



Fig. Is. Sheath of ovipositor with the muscles, from above; x 25. — /. oviduct. 



S. 22 



