68 INDEX TO MISSOURI ENTOMOLOGICAL REPORTS. 



middle ; all densely marked with very fine longitudinally impressed lines, and sparsely 

 pubescent; (Dr. Fitch in his description published in the Country Gentleman, under 

 date of September, 1859, states that these lines leave " a smooth stripe along the middle 

 of its second segment and a large smooth space on the base of the third ; " which is 

 true of a few specimens, but not of the majority, in which the impressed lines gener- 

 ally cover the whole abdomen.) Ovipositor longer than abdomen, but when stretched 

 in a line with it, projecting backwards about the same length beyond ; rufous, with 

 the sheaths black. Legs pale rufous, with the upper part of hind tibia? and tarsi, and 

 sometimes the hind femora, dusky. Wings subhyaliue and iridescent, the veins pale 

 rufous, and the stigma black. Length 9 , 0.15-0. 16 inch [=3.7-4 mm ], expanse 0.30 [ = 

 7.5 mm ] ; $ differs only in his somewhat smaller size and in lacking the ovipositor. 

 In many specimens the mesothorax and the eyes are more or less distinctly rufous. 



Described from 50 9 9 , 10 $ $ , bred June 23d-July 29th, 1870, from larva of Conotra- 

 ckelus- nenuphar, and 299 obtained from Dr. Fitch. 



Larva (Fig. 8, ) White, with translucent yellowish mottliugs. 



Pupa (Fig. 8, c 9) 0.17 inch [ = 4J mm ] long; whitish, the members all distinct, 

 the anteunfe touching hind tarsi, the ovipositor curved round behind, reaching and 

 touching with its tip the third abdominal joint, which afterwards forms the apical joint 

 of imago; five ventral joints, which in the imago become much absorbed and hidden, 

 being strongly developed. 



Cocoon (Fig. c, l>) Composed of one layer of closely woven yellowish silk. 



VARIETY RUFUS Head, thorax, and most of the first abdominal joint entirely 

 ufous, with the middle and hind tibia? dusky, and the ovipositor three times as long 

 as abdomen and projecting more than twice the length of the same beyond its tip. 



Described from three 9 9 bred promiscuously with the others. This variety is 

 slightly larger and differs so remarkably from the normal form that, were it not for 

 the absolute correspondence in all the sculpturing of the thorax and body, and in the 

 venation of the wings, it might be considered distinct. The greater length of the 

 ovipositor is very characteristic, and accompanies the other variation in all three of 

 the specimens. [Third Rept., p. 27. Fig. 7. 



EURYTOMA BOLTERI, N. Sp. 9 Length 0.18 inch [=4. 5 mm ]. Antennae black, not 

 much longer than the face, perceptibly thicker towards the end, and apparently 10- 

 jointed, though the three terminal joints are almost always confluent. Dimensions and 

 appearance of joints, represented in the annexed Figure 97, a. Head and thorax rough- 

 punctured and finely bearded with short, stiff gray hairs. Abdomen about as long as 

 thorax, scarcely so broad, viewed from above, but wider viewed laterally ; highly 

 polished, smooth and black, the three terminal segments with minute stiff gray hairs 

 along the sutures ; visibly divided into seven segments, the four anterior ones of about 

 equal length, the two following shorter, and the terminal one produced into a point. 

 Legs fulvous with the coxa 3 , [trochanters], thighs and more or less of the shanks black- 

 ish-brown. Wings perfectly transparent, glossy, colorless, and with the nerves very 

 faint. 



$ Measures but 0.14 inch [= 3.5 mm ], and differs in the antenna?, being twice as long 

 as the face, in their narrowing towards the tip and in being furnished with whorls of 

 long hairs. The number of joints are not readily made out, and I have consequently 

 presented at Figure 97, &, a magnified figure. His body is but half as wide and half a s 

 long as the thorax viewed from above, and not quite as broad as the thorax, viewed 

 laterally ; it it also lacks the produced point of the $ . His wings are also cut off more 

 squarely and more distinctly nerved. [First Kept., p. 187. PI. II, Fig. 9. 



For further descriptive details see Walsh's posthumous paper on the 

 Eurytomides (Am. Ent. II, p. 293-9), where the insect is looked upon as 

 a variety of Eurytoma diaxtroplii. 



[TRICHOGRAMMA MINUTA, N. Sp.] * * It comes nearest the genus Tricho- 



yramma, Wcst'.v., and may be provisionally called Trichogramma (/) ininnta. It differs 



