May, igo2] 



PS\CHE. 



347 



Urellia ahstersa, Lw. Down to Mesilla 

 Valley ; also in Cuba, etc. 



* Urellia mcTiinia, Walk. S. E. to 



Florida. 

 Sepsis violacca, Meig. I3own to Mesilla 

 Valley. 



* Piophila cnsei, L. N. to Alaska. It 



would seem that this insect must be 

 native in America. 



* Scatclla stagnalis, Fall. N. to Alaska. 



* Oscinis carlw/iaria, Lw. N. to Alaska. 

 * Meromxza aiiicriiana Fitch. Also at 



Beulah, N. M. 



* Borborus cqiiiniis, Fall. Also Euro- 



pean. 



* Boj'bonis geniculatus, Macq. 



Lepidoptera. 



The following species, obtained on 

 the top of Las Vegas range at the end of 

 June, 1 90 1, have been kindly identified 

 by Dr. H. G. Dyar. 



Anarta melanopa, Thunb. Also Lab- 

 rador, etc. 



Drasteria erechtca, Cram. 



Chorizagrolis agresfis, Grote. 



CJioreutis occidentclla, Dyar. Also 

 found in Alaska. 



Platyptilia cosmodactyla, Hbn. This 

 is the species referred to in I^syche, 

 Nov., 1901, p. 272. Extends to Alaska 

 and Europe. 



Pyrausta generosa, G. & R. (?) 



Hymenoptera, Myrmicidae. 



The following ants were taken on the 

 top of the Las Vegas range at the end of 

 June. 1 90 1, and have been kindly de- 

 termined by Prof. W. M. \Mieeler. 



Myrmica brcviiwdis, Emery. U'orker. 



" Smaller and darker than those from 

 New England." 



Lcptothorax catiadeiisis, Provancher. 

 worker and dealated 9 . Does not differ 

 from specimens which Prof. Wheeler 

 has from Wis., Pa., and Conn. 



Both of these species are new to the 

 fauna of New Mexico.* 



Cephalic Morphology. Comstock and 

 Kochi have Iatel_v given us an important 

 paper (Amer. Nat., 1902, vol. 36, p. 13-45, 29 

 figs.) upon the morphology of the insect 

 head, and the cephalic sclerites at length 

 assume a deeper significance and a new 

 interest. 



In this paper, the view that the liead con- 

 sists of seven segments is adopted and ahl3- 

 supported. The areas of the skull are re- 

 viewed and several sclerites hitherto dis- 

 regarded are described and aptly named. 



The morphology of the thoracic segments 

 is discussed so far as is necessary to determine 

 the structure of a typical segment, as the basis 

 for an interpretation of the head, and then the 

 ceplialic sclerites are homologized with the 

 thoracic ones, and the endoskeleton of tlie 

 head with that of. the thora.x. 



The presentation of the subject is logical 

 and clear. The argument rests, of course, 

 upon the assumption that homologies be- 

 tween the cephalic and the thoracic sclerites 

 exist. If, however, the differentiation of the 

 thoracic sclerites lias been only an incident- 

 al mechanical result of strains, due to the 



* I will take this opportunity to record the following 

 ants, also new to New Mexico, kindly determined by Prof. 

 Wheeler : — Citmponotics iicticii/titiis z'ici'mts, Mayr, Trout 

 Spring, Gallinas Caiion (Transition Zone); Formica 

 sanguinea rubicimda, Em., Trout Spring; Lioinetopiim 

 vticrocepluilum occidentale, Emery, Romeroville (Upper 

 Sonoran Zone) ; Eciton cali/ornicinn, Mayr, Las Vegas ; 

 Stenamma /ulvum aquia. Buckl. Trout Spring ; 

 Brachytnyrntex fteeri depilis, Em. , Trout Spring ; Crem- 

 astogttster punctulaia, Em., Las Vegas and Las Vegas 

 Hot Springs; C. Uneolata, subsp. cocirctata var. mormo- 

 num, Em., Romeroville. — T. D. A. C. 



