1 893-] ENTOMOLOGICAL NEWS. 1 25 



maxillre are quite radically different in the development and the texture 

 of the parts, and in this respect the Coccitiella more resembles other pre- 

 daceous insects. The form and arrangement of the sclerites of the labium . 

 differ throughout, and show no family resemblance in any character that 

 I have noted. 



The labrum of Coccinella differs markedly in form from that of Epi- 

 lachne, but yet more markedly in the sensitive structure beneath it — the 

 epipharynx. A marked peculiarity in Coccinella is found in a central and 

 basal series of sensory pits which are not furnished with tactile hairs. 

 The latter are few in number, as compared with Epi/ach?ic, and are much 

 less regularly arranged, but many, if not most of them, have around the 

 base a number of supplemental pits, which are not furnished with per- 

 ceptible processes of any kind. I have made no detailed comparisons 

 between the parts, preferring to let the figures speak for themselves, but 

 it gives an indication of differences remaining to be studied, and con- 

 tradicts a generalization which I had been inclined to make, that com- 

 pound mandibles would be rarely found in predaceous forms. 



EXPLANATION TO BASE FIGURES. 



Fig. I. — Mouth-parts oi Epilachne borealis : a, maxilla; b, labrum; c, 

 mandible; d, labrum beneath — epipharynx. Original. 



Hg. 2.— Mouth-parts of Coccinella g-notata : a, maxilla; b, labrum; c, 

 mandible; d, labrum beneath — epipharynx. Original. 



The Cattle Tick. — Bulletin No. 24, of the Texas Station, on the above 

 subject is an unusually interesting and valuable one. Dr. Cooper Curtice, 

 its author, is well known as a veterinanan, and has devoted himself more 

 especially to a study of the parasites of domesticated animals. The his- 

 tory of this tick is very completely given, and there is much information 

 concerning the structure and physiology of the insect, while the author 

 leaves yet some problems for others to solve. There is a consideration 

 of the relation of the ticks to "Texas fever" in cattle, but Dr. Curtice is 

 apparently not convinced that any real relation exists between them. 



Dr. M. Francis treats of remedial measures, and finds several of the 

 sheep dips preferable to the kerosene emulsion. He does not find that 

 Mr. H. E. Weed's recommendation of sulphur is warranted by e.xperience 

 in Texas. The efficiency of the sheep dips as compared with the kero- 

 sene emulsion is somewhat surprising, and warrants more careful study 

 of the composition of these dips. 



I GIVE a new \oz^\Vj {ox\}i\& Lyccenasonorensis, it being in the Yosemite 

 on the trail leading to the foot of the Upper Yosemite Falls. I took sev- 

 eral between the Columbia Rocks and Valley View Point during the 

 month of May, 1892, and they were seen on the opposite side around 

 Union Point on the trail leading to Glacier Point during the month of 

 June, but they were so worn I took none of them.^. B. Lembert, 

 Yosemite, Cal. 



