4(jl> Osten Sacken: on the characters of the three d'nnsioiis of 



Scatopse are, of course, not pendulous. Howevcr in the grcat majority 

 of cascs, tliG terni pendulous is descriptivc, and therefore nseful. 



About the basal (fifth) Joint of the palpi, Becher, Mundth. p. 9 

 says: „In those cases where, as in most Nemocera, the palpi are 

 apparently five-jointed, the first Joint corresponds to the palpal 

 Scale" (Tasterschuppe). 



p. 428 (footnote). Marno, Die Typen der Dipteren -Larven, 

 Verh. Zool. Bot. Ges. 1869. In this paper Marno does me the ho- 

 nor to ascribe to me the first notice of the organ in the larvae of 

 Cecidomyia, which I called breastbone. And indeed I remeniber 

 distinctly that in preparing my paper: On the N. Am. Cecidomyidae 

 for the Monogr. N. Am. Diptera Vol. I, 18(i2, I was astonished not 

 to lind any notice of this very conspicuous and important organ in 

 either of the three monographs by Bremi, Winnertz and Loew. 



Since thät time I have discovered two much earlier descriptions 

 of the breastbone. One is found in Ratzeburg's Ueber den Bau 

 etc. zweier an der Kiefer lebenden Gallmücken-Larven (Wiegm. Arch. 

 1841). On page 237 he says; „Eines merkwürdigen Theiles (Brust- 

 bein?) muss ich noch erwähnen etc." This organ is figured on the 

 plate (Tab. X, f. 3, 4). The other description, with a figure, has 

 been given by Dufour (Mem. de Lille 1845, p. 209 — 210, fig. 4) and 

 concerns the larva of Lasioptera. Dufour says: „A la region in- 

 „ferieure et ä la ligne mediane du corps, il y a constamment une lame 

 „allongee, cornee, brune, bifide ä son bout anterieur. Quoique placee 

 „ä une certaine distance du pseudocephale, je la considere comme un 

 „vestige interessant de ces mandibules interieures et retractiles qui 

 „s'observent dans plusieurs larves dcpourvues de veritable tete et 

 „dont j'ai expose la composition et la structure dans un memoire sur 

 „la Piophüa petasionis. Reaumur a decrit et figure cette lame sous 

 „le nom de trait brun corne etc." 



Reaumur's Statement refers to some larva of a Museid, and not 

 to that of a Cecidomyia. 



The magnificent large in-folio of N. Wagner about Paedo- 

 genesis, appeared in the same year (1862) with my little essay on 

 Cecidomyiae. It contains probably the most complete description 

 of the larva of Cecidomi/ia in existence and, of course, gives a 

 description and figures of the breastbone. 



p. 434, at the top, about the ocelli. Schiner (Fauna II, p. 

 XXVIII, footnote) says, referring to the Chironomidae: „Traces of 

 ocelli may sometiraes be discovered, under a magnifying power, es- 

 pecially in Tanypus" . In MM. MialTs and Hamniond's recent 



