1897-] ENTOMOLOGICAL NEWS. 105 



AT Ihe annual commencement on March 24th last, the Western Univer- 

 sity of Pennsylvania, at Pittsburgh, conferred the honorary degree of 

 Doctor of Science upon Dr. George H. Horn. We are also glad to state 

 that Dr. Horn is gradually recovering from an almost complete paralysis 

 of the left side, with which he was stricken in December last, and is re- 

 gaining the use of the limbs affected. 



MASSACHUSETTS AGRICULTURAL COLLEGE. Zoological Department. 

 I wish to obtain as many specimens as possible of the genera Chionas- 

 pis and Pulvinaria from all parts of the world, as two of my assistants, 

 Prof. R. S. Lull and Mr. R. A. Cooley, are making thorough and ex- 

 haustive studies of these genera for the purpose of preparing complete 

 monographs of them. Prof. Lull will take the genus Pulvinaria and 

 Mr. Cooley the genus Chionaspis. and the work will be carried on in my 

 laboratory under my oversight. I am under great personal obligations 

 to Prof. T. D. A. Cockerel!, who is one of our highest authorities on the 

 Coccidae of the world, for valuable hints and assistance in this matter. 

 If you will be kind enough to send specimens to me from your locality I 

 shall be very grateful, and will request my assistants to return a named 

 set if you so desire. If you are not sufficiently familiar with the Coccidse 

 to distinguish these genera, please send all Coccids unknown to you and 

 we will separate them. C. H. FERNALD. 



EXTRACT from "Rules for Regulating Nomenclature with a view to 

 Secure a Strict Application of the Law of Priority in Entomological 

 Work" compiled by Lord Walsingham and John Hartley Durrant. 



The type of a species belongs to one of the following categories : 



(1) Type (described from a unique specimen or from a single specimen 

 selected from a series). 



(2) Type (= type cf + type $ described from a single specimen of 

 each sex). 



(3) Co-types (described from more than one specimen, no single one 

 beieg selected as the type. The type = the sum of the co-types). 



Each of the remaining specimens of a series from which the type was 

 selected is called a Paratype. 



A specimen subsequently named by the author after comparison with 

 the type is called a Metatype. 



A specimen named by another than the author, after comparison with 

 the type, is called a Homotype. 



A specimen collected in the exact locality whence the type was obtained 

 is called a Topotype. 



Identification of Insects (Imagos) for Subscribers. 



Specimens will be named under the following conditions : ist, The number of species 

 to be limited to twenty-five for each sending; 2d, The sender to pay all expenses of trans- 

 portation and the insects to become the property of the American Entomological Society ; 

 3d, Each specimen must have a number attached so that the identification may be an- 

 nounced accordingly. Exotic species named only by special arrangement with the Editor, 

 who should be consulted before specimens are sent. Send a 2 cent stamp with all insects 

 for return of names. Please put date of capture and exact locality on each specimen. 

 Before sending insects for identification, read page 41, Vol. III. Address all packages 

 to ENTOMOLOGICAL NEWS, Academy Natural Sciences, Logan Square, Philadelphia, Pa. 



