THE BLACKHEAD FIKEWOEM OF CRAISTBEREY. 43 



coxae exposed ; antennje and mesothoracic legs not reaching to end of wings ; 

 several strong setse on tenth abdominal segment ; a pair of stout setae on each 

 side of anal rise ; anal rise unarmed ; body set?e otherwise weak and hardly- 

 distinguishable ; spiracles slightly reduced ; anal and genital openings slitlike 

 in both sexes ; cremaster absent. 



Labva. 



Plate II, D ; Plate III, A-C, E-G. 



Cylindrical, slender, very slightly tapering at caudal end. No secondary hair. 

 Xegs and prolegs normal. Crochets uniordinal, in a complete circle. Anal 

 fork present, reduced. Prothoracic shield broad, divided. Spiracles round, 

 moderate ; that on eighth abdominal segment slightly higher than those on 

 abdominal segments 1 to 7, not over one and one-half times as large, same size 

 as that on prothorax. Skin evenly and appreciably scobinate. 



Body setfB moderately long ; tubercles broadly chit-nized ; IV and V on 

 abdominal segments 1 to 8 under the spiracle and approximate ; prespiracular 

 shield of prothorax elongate, large, bearing three set.ie (III, IV, and V) in a 

 longitudinal line ; group VI bisetose on prothorax, unisetose on mesothorax 

 and metathorax, greatly reduced and closely approximate to IV and V on 

 abdominal segment 9; III antero-ventrad of the spiracle on eighth abdominal 

 segment, directly over the spiracle on abdominal segments 1 to 7 ; Ilia not distin- 

 guishable ; on thoracic segments 6 setse in group VII ; VII bisetose on abdominal 

 segments 7, 8, and 9 ; ninth abdominal segment wath 9 setse in a nearly vertical 

 line, paired setse of group II close together on same chitinization on dorsum, 

 I and III closely approximate ; on abdominal segments 1 to 8 II latero-caudad 

 of I ; prothorax with 11" slightly higher than I", closer to 11" than to I", II*" 

 above the level of puncture z ; I*" nearer to puncture z than to I", 11" about equi- 

 distant from I" and I*", puncture y directly caudad of I^, puncture x dorso- 

 caudad of I^' and on the level of 11^. 



Head capsule spherical, nearly square in outline viewed from above ; slightly 

 wider than long; greatest width well back of middle of head; incision of 

 dorsal hind margin slight, about one-fourth the width of the head; distance 

 hetween dorsal extremities of hind margin about half the width of the head. 

 Frons broad, triangular, longer than wide, reaching beyond middle of the head, 

 Adfrontal sutures extending to incision of dorsal hind margin. Longitudinal 

 ridge very short, less than one-third the length of the frons. 



Ocelli six ; lenses well defined. 



Epistoma normal. 



Frontal punctures close together ; well forw^ard of frontal setse ; distance 

 from frontal seta (F*) to first adfrontal seta (Adf^) about equal to distance 

 s'eparating adfrontal setse (Adf and Adf^) ; Adf^ anterior to beginning of longi- 

 tudinal ridge ; puncture Adf* between and about equidistant from Adf* and 

 Adf. 



Epicranium with the normal primary setse and punctures and with a row 

 of three uUraposterior setse and one puncture. Anterior setse (A*, A^ and A") 

 in a line with lateral setse (L^) ; anterior puncture (A") closely approximate 

 to and posterodorsad of A^ Posterior setse (P^ and P^) and puncture (P'') 

 in a line with first adfrontal seta (Adf) ; P^ about middle of head, on the 

 level of adfrontal puncture and lateral seta (L*) ; P" between and about equi- 

 distant from P* and P''; puncture P'' lying between P* and U, approximate to 

 the latter. Lateral puncture directly posterior to L^ remote. Ocellar setse 

 (0\ 0^ O^) well separated, forming a right angle; O^ lying below and between 

 ocelli II and III ; O^ postero-ventrad of ocellus I, in a line with ocelli I and II 



