June, '07] ENTOMOLOGICAL NEWS. 247 



has not been generally accepted as yet, but no other origin has 

 been suggested, except that it was Neuropterous. The same is 

 true of the Hymenoptera which have often been placed nearer 

 to the Diptera and with none or very vague ideas as to their 

 origin. It seems to the author that the evidence of the wing 

 venation in each of these three orders is unimpeachable as all 

 recognize it is in the case of the Lepidoptera. 



The scheme just presented illustrating the phylogeny and 

 primary classification of insects, while not an elective or com- 

 promise measure in any particular, does express more nearly 

 a consensus of the opinions of recent students of the subject 

 than any thus far presented, and illustrates the fact that the 

 most essential differences of opinion between authors is the 

 same as in all other attempts at classification, the differences be- 

 tween those who contend for few or for many groups. 



Ctenothrips, new Genus. 



By H. J. FRANKLIN, B. S., Massachusetts Agricultural 

 College, Amherst, Mass. 



Head about as wide as long. Eyes prominent; vertex 

 elevated between them. Ocelli present and large in size. 

 Antennae eight-segmented. Prothorax strongly rounded in 

 outline, when viewed from above or below ; two long spines 

 at each posterior angle; no long spines at the anterior angles. 

 Wings well developed, but very narrow for length; each one 

 of the fore pair with two longitudinal, but not prominent, 

 veins ; these veins and the costa set with prominent spines. 

 Surface of abdomen reticulated. Lateral portions of the pos- 

 terior margin of eighth abdominal segment dentate and 

 strongly produced posteriorly. Posterior margin of the dorsal 

 plate of the eighth segment comblike (Fig. 2). Tenth segment 

 split above; only moderately conical in form. Ovipositor well 

 developed. 



Generic name derived from (KTC'K;, comb; 0pi\fr thrips). 



This genus shows certain affinities with both Eutlirip s (of 

 Hinds) and Scricotliri^s Halidav. The wings and antenna 



