THE SMOKY CRANE-FLY. 



125 



area extending from the pharyngeal foramen dorsally and posteriorly about one- 

 third of the distance to the vertex. Mentnm (fig. 63, h) terminated by ;i median 



blunt lobe supported on each side by a smaller lobe and two partly fused lobes; 

 a nonchitinized, transparent area extends from the pharyngeal foramen into the 

 apex of this organ, this area separated from the foramen proper by a pair of 

 posteriorly directed, blunt lobes of the gular region. Labrum bearing on its 

 dorsal surface a pair of broad protuberances (fig. 03, &) each surmounted exter- 

 nally with a brush of fine hairs and internally with a rounded tubercle bearing 

 3 peculiarly formed bristles. Antenna? single jointed, cylindrical, about one- 

 fourth as wide as long, situated above the mandibles; basal tubercle trun- 

 cate, about one-half length of antennae. Mandibles (fig. 63, /, g) stout, the 

 crown concave and provided with 2 large external teeth and a smaller dorsal 

 internal one. Maxillae (fig. 63, d) quadrate, each being provided with 2 ante- 

 rior and 1 lateral tuft of hairs and a short truncate cylindrical palpus. Body 

 integument attached to head capsule at a line passing 

 around head directly behind mandibles. Thoracic and 

 abdominal segments, except anal segment, without ex- 

 ternal appendages or vestiture of any kind. Circum- 

 stigmal tubercles armed on their inner borders with a 

 row of very short spines supported by a row of fine hairs. 



THE PUPA. 



Pupa (fig. 04) cylindrical, slightly sinuate in profile, 

 19 mm. in length and 2 mm. in diameter. Cases con- 

 taining wings, antenna?, and legs free and lying ap- 

 pressed to venter. General color yellowish brown, the 

 head, wings, antenna?, legs, and thoracic respiratory 

 tubes dark brown. A light yellow stripe bordered by 

 a fuscous line on either side, situated directly ventral 

 to the spiracles, extends from tip of wings to base of 

 anal segment. The fuscous line dorsal to this stripe 

 is continuous with a wide fuscous band along the an- 

 terior margin of each segment dorsally, and also with 

 a narrow line defining each annulus. The band is 

 very conspicuous on the fifth segment but rather faint 

 on the others. 



Head well defined; eyes prominent. On ventral 

 surface directly between eyes is a prominent tubercle 

 surmounted by a spine. Anterior to this spine and between the antenna! fossa? 

 are 2 more spines. 



Pronotum bearing a pair of strongly clubbed and distinctly simulated respi- 

 ratory tubes which are directed anteriorly with the clubs inclined slightly 

 ventrad. Wings extending from a short distance behind eyes to base of first 

 abdominal segment. Third pair of legs extending to base of third segment of 

 abdomen. 



Abdomen composed of 6 segments, although, owing to annular constrictions on 

 the first 5 segments, appearing to have 11. Each segment, except anal, provided 

 veutrally with a transverse row of 8 short, marginal spines, and -J larger and 

 more widely separated spines near anterior margin; segments provided dorsally 

 with a similar transverse row of 10 short marginal spines arranged in groups: 

 the two groups nearest median line consisting of '2 spines each and the groups 

 nearest stigmata with :i spines each. Dorsal surface of segments directly 

 anterior to this transverse row of spines and posterior to the annulus finely 



Pig. 04. — The smoky 

 crane-fly : Pupa, lateral 

 a spect. Enlarged. 

 1 1 Original.) 



