16 PROCEEDINGS OF THE NATIONAL MUSEUM. vol. 64. 



palp ; apical joint subclavate, about two thirds of palp. Ligula slioii> 

 and thick, with two small setae. 



Paragnathae ( =" Maxillulae "=" Paraglossae ") , not developed. 



Hypopharynx, membranous. 



Epipharynx, with a single granulated transverse plate, the ends of 

 which are swollen, more heavily chitinized and rounded. The plate 

 probably assists in keeping the hair to which the larva clings in 

 proper and steady position during the period of transportation. 

 Epi- and Hypopharyngeal rods, long and thin. 



Bracon, present, forming a bridge in front of the maxillary stipes. 



Tentorium, slender, with ventral tentorial pits immediately outside 

 the gular sutures. 



Prothorax. (fig. 3, 5) Prothoracic tergal shield subtrapezoidal, 

 about two thirds the length of head ; anterior width about the same 

 as posterior width of head ; posteriorly ^ wider than head and more 

 than twice as wide as the length of the segment; postero-lateral an- 

 gles sharp ; medio-dorsal suture fully developed posteriorly, occupy- 

 ing about four fifths of the length of the segment, but not reaching 

 anterior margin of segment. Setae of shield few, minute. Prester- 

 num not distinct, probably included in not divided sternal region. 

 Hypopleural chitinizations distinct but small. Setae of segment 

 scattered, minute. 



Meso- and metathorax, similar in shape; metathorax slightly the 

 larger, and also the largest of all the body segments. Tergal shield 

 subtrapezoidal, twice as wide as long with latero-posterior angles 

 sharp; medio-dorsal sutures fully developed; setae of shields few 

 and minute. Hypopleural chitinizations present in both segments, 

 but small. Sternal regions not divided. Setae of segments scattered, 

 minute. Intei'sternal bands present, but not distinct. 



Legs, slightly and gradually increasing in length from first to 

 third, about one and one-half times as long as the width of the cor- 

 responding segment. Coxae widely separated, free, inclining, ob- 

 conical, about twice as long as wide at base, about one-fourth the 

 length of entire leg; without groove for the reception of femur; one 

 long seta and a few of medium size. Trochanter distinct, shaped 

 like a signet ring; with one seta as long as coxa and with a trans- 

 verse series of small circular spots. Femur slightly longer than coxa, 

 half as thick, elongate, slightly clavate, distal end oblique: with a. 

 few small setae and one seta as long as femur and coxa together. 

 Tibia as long as femur, about half as thick, subcylindrical, distally 

 somewhat attenuate, almost straight; setae rather small, scattered. 

 Tarsus (fig. 6.) half as long as tibia, claw-shaped, slender, falcate, 

 apically attenuate; near base of tarsus with two slender, slightly 

 curved setae, about four-fifths as long as tarsus, distally as far fi'om 



