232 Dr. A. S. Packard, Jim., on Insects 



the head. There arc no prothoracic or anal feet, and no anal 

 bristl-es or ajipendages of any kind, not even the few lont;- 

 hah's observed in the Salem species. It is wliite, and 0*30 of 

 an inch in length. 



The pupa is rather slender, with the abdomen slightly flat- 

 tened and rather broad, being nearly as wide as the thorax. 

 The wings and ends of the third pair of feet reach to the pos- 

 terior edge of the second abdominal segment. The antennae 

 are laid in between the wings and the second pair of feet, dis- 

 a])pcaring under the middle of the front edge of tlic wing. 

 The third pair of feet are concealed by the wingSj the ti])s of 

 the tarsi only being in sight ; they are even with the end of the 

 wings. The second pair of feet are entirely concealed, their 

 tips not appearing ; while the first pair are entirely in siglit, 

 their tips reaching nearly as far as those of the third })air. 

 On the vertex is a pair of acute minute spines, probably loco- 

 motive. From just above the base of the head, and in front 

 of the insertion of the wings, arise a pair of mesothoracic 

 respiratory tubes, which are broad and flat at their base, snd- 

 deidy becoming cylindrical and slender a little beyond their 

 middle, and projecting slightly beyond the head. The meso- 

 thorax is tergally full and rounded. The abdominal segments 

 are very convex, with the sutures deeply marked, the edges 

 of the segments being bevelled in toward the suture. The 

 hinder edge of each ring is raised into an acute ridge, armed 

 Avith a few short hairs. The terminal segment is slender, no 

 wider than long, and with a small acute terminal spine on 

 each side. No respiratory appendages. It is whitish, with a 

 yellowish tinge, and is '15 of an inch in length. No adult 

 Tanypus occurred in the collection. 



Stratiomys, sp. — With the young of Tanypus were asso- 

 ciated several larvte of this genus. They are long and slen- 

 der, the body tapering alike toward both ends. The head is 

 chitinous, subconical, and nearly as long as the prothoracic 

 segment. On each side of the base of the head is a deep 

 slightly curved sinus (closed anteriorly in older specimens), 

 thus forming a rather long tongue-like lobe to the underside 

 of the head. Above, the head is divided by two deeply im- 

 pressed lines into three lobes extending nearly to the posterior 

 third of the head ; these lobes are acutely pointed, the middle 

 one being the longest, and embracing the clypeo-labral region. 

 On the side of the outer lobes and at the middle of their 

 length are situated the two ocelli. The antenntc are minute 

 acute tubercles situated at the ends of the outer lobes. The 

 maxilla? (?) are 2-jointcd palpus-like appendages, with long 

 hairs at the extremity, and play with much freedom up and 



