52 R. OSTEN SACKEN. 



geners, as defined in my previous article (1. c. p. 301). Its antennne 

 have the same structure, but, being mutilated in the specimens I 

 have before me, do not allow a closer comparison. The ovipositor has 

 the flattened cylindrical shape and horny consistency peculiar to the 

 genus and the long, needle shaped, stiff" organ projecting beyond it. 

 What puzzles me about it, however, is, that whereas in two of the fe- 

 males which I bave before me, the ovipositor (exclusive of the needle 

 shaped organ) is very short, not longer than the abdominal segment 

 preceding it, in a third specimen it has almost half the length of the 

 abdomen. The pupa; are exactly like those of the other Asplion(l_yJise 

 which I have seen, and also have the frontal projections contitjiious, 

 and not remote. A. /-udbeckise conspicua at first sight is not unlike 

 A. helianfhi g/obuhiK, Walsh in litt, of which I owe a specimen to the 

 kindness of my lamented friend. Walsh's species, however, is easily 

 distinguished by the paler color of its hind tibiae and tarsi. Its gen- 

 eral coloring is also paler brown, with a yellowish-gray pubescence ; 

 its coxae are pale; the vein ending in the apex of the wing is less 

 arched than in A. rudhechise lonspicna. 



A. helianthi globulus, Walsh, forms a rounded swelling on the stem 

 of Hefunithus. As it has never been described these notes may serve 

 to identify it. 



II.— On some undescribed Galls of CECIDOMYIA. 



In addition to the deformations on plants, produced by Cecidomi/iee, 

 which were described in my previous papers (^Monogr. of N. A. Dipt., 

 Vol I., Prgc. Entom. Soc. Phil., 1866, p. 220, and Trans. Am. Ent 

 Sac, 18G9, p. 299), I give here a few new cases observed by me. 

 Although I have not been able to rear the perfect insects from these 

 calls, I deem it useful to draw the attention of collectors to them. 

 The description of the gall, coupled with a short notice of the peculi- 

 arities of the larva, will help to recognize these cases easily. 



Cecidomyia sambuci umbellicola, ii. sp. 



Among the luubols of the elder (^Sambitciis racanosa) in June, 

 1868, near South Orange, N. J., I observed some buds of the flower- 

 lets which were considerably enlarged (from six to ten times the size 

 of an ordinary bud), their shape remaining round. Inside of each of 

 guch buds I found an orange larva with a distinct breastbone and with 

 two minute horny points, directed upwards, at the anal end of the 

 body. The latter character, not uncommon among Cecidomyise, has 

 been mentioned by me in the Monographs of X. A. Di'ptera, etc., I., 

 p. 181. 



