1864.] 579 



opaiiue, with the usual markings yellowish-white instead of white, and a dark 

 vitta on .3 or 4 of the middle dorsal segments. 



Fupa. — On April 12 1 found three pupse in the galls. Length .16 inch; abdo- 

 men orange, in one instance tinged with sanguineous, the rest of the body and 

 the head bright sanguineous. The horn at the base of each antenna is obtusely 

 conical, projecting in an angle of about 100° with a minute thorn at its apex, 

 and the two horns divaricate from each other at an angle of 100° — 110°. No 

 post-antennal bristle. Thoracic bristle about J as long as the thorax is wide. 

 A pupa examined April 15 was of a nearly uniform, palish, sanguineous color. 

 The empty pupal integument (1 specimen) is uniformly whitish, save that the 

 base of the antenna is a little obfuscated. 



Imago. C. s. brassicoides n. sp. % 9- — (Recent) Brown-black, a little paler 

 beneatli. Head with the antennae % a little tapered towards the tip, about 3 as 

 long as the dried body, 22 — 24-jointed (2+20 to 2-|-22) and perhaps in a single 

 antenna 20-jointed (2+18), the same individual often having one more joint in 

 one antenna than in the other, the last joint even in the 24-joiuted antenna ta- 

 pered to a more or less elongate point at tip, so as to be undistinguishable from 

 the last joint of a mutilated antenna; the flagellar joints globular, verticillate 

 and pedicelled, with the pedicels ^ as long as the globular part, and the verti- 

 cils fully as long as two of the complete joints from which they spring. Anten- 

 nas 9 scarcely tapered, about J as long as the dried body, cylindrical at tip, 

 moniliform towards the base, the joints difficult to count but apparently nearly 

 as numerous as in % , short, sessile, and but slightly verticillate, the verticils as 

 long as the one joint from which they spring. Occiput grayish in the living 

 insect, black in the dried specimen. Thorax with erect, rather sparse, dusky 

 hair; origin of the wings and a large spot beneath them orange or pale sangui- 

 neous in life, dull rufous when dried. Halteres (dried) brownish white, rarely 

 fuscous, the club always more or less fuscous, its extreme tijD generally showing a 

 whitish reflection. Abdomen % (recent) dorsally brown or dull luteous with cine- 

 reous hairs, ventrally pale brown or dull luteous with depressed whitish hairs. 

 Abdomen J (recent) with the dorsum sometimes entirely brown-black, sometimes 

 bi'own-blaek with tlie bind edge of each segment when viewed from behind 

 slightly sanguineous, sometimes dark sanguineous, some times sanguineous, some- 

 times with its anterior J sanguineous and its j^osterior ^ pale yellowish brown; 

 sometimes again with brown hairs occupying i or i of the anterior surface of 

 each jciint, and the lateral hairs cinereous and longer towards the tip of the joint, 

 sometimes with cinereous hairs and the lateral hairs whitish, sometimes with the 

 hairs, esjjecially the lateral ones, twice as long and dense in one specimen as in 

 another, the two both unrubbed and fresh and hatched out the same day; and 

 finally sometimes on joints 3 — 6 with a subterminal, transverse, impressed, gla- 

 brous line, which in other specimens is obsolete or subobsolete. Venter 9 some- 

 times dark sanguineous, sometimes sanguineous on the anterior i and the rest 

 pale yellowish brown, always with short, dense, appressed, white hairs conceal- 

 ing its color except where they are removed. Oviduct sometimes protruded so as 

 to be i as long as the rest of the abdomen, sometimes entirely retracted so that 

 the tip of the J abdomen appears as truncate as in % . In the dried % J spe- 



