Sept. -Dec, I9--1.1 Weiss-Dkkersox : Milkweed Insects, 129 



subtransverse ; antennae minute, single jointed, almost obsolete; ocelli 

 absent ; mandibles of biting type, broad across base, bifid at tip ; 

 maxilla fused with labium to near apex; lacinia simple, fringed 

 with chitinous hairs on inner surface; galea absent; maxillary palpi 

 two-jointed, first joint barrel-shaped, apical joint minute; cardo 

 subquadrate with distal and articulating angles strongly acute; la- 

 bium sulxjuadrate with mentum and submentum fused, indistinct; 

 iabial palpi one-jointed. True legs absent, indicated by ambulatory 

 tubercles. Thoracic and abdominal segments somewhat similar, trans- 

 versely wrinkled, each with three dorsal plicie. Hypoplcural chitini- 

 r.ation absent. Ccrci absent. Anal segment wart-likc. Spiracles 

 bifore. 



Pupa. Length about 7 mm. Width 2.5 mm. to 3 mm. Oval, 

 whitish. Rostrum bearing a pair of dorsal chitinized hairs below 

 antennal insertion; a pair just opposite to where antenna; arise and 

 a pair above near the eyes. Head with a group of three chitinized 

 hairs on either side of middle and above the eyes. Prothorax tri- 

 angular dorsally, bearing a longitudinal row of three spines on either 

 side of a median line. Dorsal anterior edge of prothorax fringed 

 with a row of distantly placed spines; posterior edge bearing only 

 a few lateral spines. Mesothorax with a subhemispherical median 

 tubercle on posterior edge ; anterior to this tubercle on either side 

 of middle are a pair of spines. Metathorax with a broad shallow, 

 median, dorsal depression with a pair of spines on either side. Ab- 

 dominal segments each with a shallow, median, dorsal depression 

 and three spines on each side arranged transversely on a slight ridge. 

 Abdominal segments 5, 6. 7 and 8 bear a similar pair of lateral 

 spines. Anal segment terminated by two more chitinized dorso- 

 lateral spines and several smaller ones. Wing cases each l)earing 

 lour pronounced longitudinal rows of minute spines, these spines 

 becoming more prominent toward bases of wing cases. Distal outer 

 portions of femora each bearing a pair of spines. All spines with 

 tuberculate bases. 



Ani'LT. Rhysscmatiis liiicaticollis. This was described by Say 

 in 1H24 (Jour. Acad. Nat. Sci., Vol. 3, p. 313) from Arkansas, under 

 the generic name Tylodcrma. According to lilatchlcy and Leng 

 ( Rhyn. X, K. Amer., j). 4*^4) it ranges from Mass., to Mich., and 

 Kansas, south to Florida and Texas. 



