226 ©. R. Osten Sacken: 
sima Dolesch., from Amboina, is a Tanyderus (compare this genus). 
C. hyaloptera Philippi from Chili is uncertain yet. Mr. Verrall 
(Ent. M. M. Oct. 1886, p. 119) takes ©. diversa Walk. for a true 
Cylindrotoma; CO. nigriventris Loew, with its five posterior cells 
etc. certainly belongs here. 
Liogma. 
OÖ. Sacken, Monogr. etc. IV, p. 298; 1868. 
Proposed by me for the north-american Oylindr. nodicornis 
and the european ©. glabrata;, Mr. Verrall 1. c. agrees with me in 
adopting it. 
Triogma. 
Schiner, Wien. Ent. Monatschr. VII, p. 223, 1863; O. Sacken, 
Monogr. etc. IV, p. 303. 
Europe (one spec.) and North-America (one spec.). 
A larva, possibly that of Triogma, is described by de Rossi, 
in the Entom. Nachr. 1876, p. 31; compare also my remarks l. c. 
1878, p. 9. 
Phalacrocera. 
Schiner, Wien. Ent. Monatschr. VII, p. 224, 1863; O. Sacken, 
Monogr. etc. IV, p. 305. 
Europe (one spec.) and North-America (one spec.). 
Mr. Engel (Entomol. Nachr. 1384, p. 260) announced the redis- 
covery of the larva of P. replicata by him. I pointed out (l. c. 
p. 311) that Dr. Grube (Jahresb. d. Schles. Ges. f. Vaterl. Kultur 
für 1867, p. 59) had given a detailed description of a larva which 
is apparently identical with that described by de Geer. 
Section VIII. Ptycehopterina. 
OÖ. Sacken, Monogr. etc. IV, p. 309. 
I retain this group in its old place, and merely repeat what I 
have said in my Catal. N. Am. Dipt. 1878, p. 221, Note 36: „The 
„parts of the mouth of the larvae of this genus do not differ ma- 
„terially from those of the other Tipulidae; the characteristic den- 
„tate mentum is present. For this reason I am not inclined to follow 
„Dr. Brauer in attaching to the fact that the head of these larvae 
„is not imbedded in the thoracice skin (as is the case in the other 
„Lipulidae) such a radical importance as to justify the separation 
„of the group as a distinct family“ (compare Brauer, Verh. Z. B. Ges. 
1869, p. 844 and 847). 
