INTRODUCTION 



duced a different concept. Any attempt at writing introducido un concepto diferente. Probablemente 



keys for poorly known, large genera is likely to resultarTa inutil intentar escnbir una clave de 



be futile, and we have avoided this by presenting un genero grande, poco conocido, hemos evitado 



as much data as possible in the form of a matrix. esto al presentar la mayor cantidad de datos 



This permits "random entry" identification, for posibles en forma de una matnz. Esto permite la 



the user can select any character in the matrix he i dent i f icac i on de "entradas al azar", por que el 



wishes to check, and eliminate all taxa that do usuario puede seleccionar dentro de la matriz 



not possess that character, finally arriving at a cualquier caracter que desee poner a prueba y 



considerably reduced number of taxa (hopefully, eliminar todos los taxones que no posean tal 



only one) after checking a series of characters. caracter, llegando finalmente a un nijmero suma- 



This concept has formed the basis of computer mente reducido de taxones (es de esperar que sea 



identification, since the machine can do such uno solo) despues de revisar una serie de carac- 



sorting more rapidly and efficiently than the teres. Este concepto constituye la base de la 



human, and the random entry matrices presented i dent i f icac i on por computadora, ya que esta 



here are organized in such a way that they can be maquina puede seleccionar mas rapida y ef icazmente 



incorporated in the computer programs now availa- que el ser humano y las matrices de entradas al 



ble for such machine sorting. It is our assump- azar presentadas aqu' estan organizadas en tal 



tion that this method of identification will be forma que se las puede i ncorporar en los programas 



used more and more in the future, and we hope that para computadoras ahora disponibles para tal 



presenting these matrices will encourage others to seleccion automatica, Suponenos que este metodo 



begin to organize their data similarly, thus de ident i f icac i on se usara cada vez mas en el 



anticipating the day when computer keys are future y esperamos que la presentacion de estas 



available to all users. matrices alentara a otros a empezar a organizar 



A work of this magnitude becomes very depend- sus datos en forma similar, previendo as' el d'a 



ent upon the cooperation and collaboration of many en que haya claves para computadoras disponibles 



people. We wish to express our gratitude to all para todos los usuarios. 



those who have helped us in any way. The following Un trabajo de esta magnitud depende en alto 



list indicates the number of individuals who have grado de la cooperacion y colaboracion de mucha 



contributed to the work. While we have tried to gente. La slguiente lista indica el numero de 



make the list inclusive, the omission of anyone personas que han contribuido a esta obra. Aunque 



who has aided us should be regarded solely as the hemos tratado de incluir a todos en esta lista, 



consequence of the faulty nature of our "disc la omision de alguno de los que nos ayudaron debe 



storage", rather than failure to recognize the ser considerada solamente como consecuencia de la 



help. naturaleza defectuosa de nuestra memoria, pero no 



como una inhabilidad de apreciar la ayuda recibida. 



(in alphabetical order): Jorge Abalos, Fernando Achaval, Joseph Bailey, 

 Avelino Barrio, Charles Bogert, Werner Bokermann, Simon Campden-Ma in, Nelly Carrillo 

 de Espinoza, Antenor de Carvalho, Ronald Crombie, Marcos Freiberg, Howard Gloyd, 

 Jose Gallardo, Alphonse Hoge, Robert Inger, George Jacobs, Edward Keiser, Miguel 

 Klappenbach, Abdem Lancini, Clarence McCoy, Niceforo Marfa, Oswaldo Mineses, 

 Marta Miranda, Charles Myers, Gustavo Orces-V., Donald Owens, Neil Richmond, Carlos 

 R i vero-Blanco, Douglas Rossman, Janis Roze, Richard Sage, Jay Savage, Wade Sherbrooke, 

 Hobart Smith, Richard Timmerman, Robert Tuck, Paulo Vanzolini, Jaime Villa, Warren 

 Walker, Larry Wilson, George Zug. 



In addition to the above, we also wish to Ademas de los mencionados, deseamos expresar 



acknowledge several specific contributions to the nuestro reconoc im i ento por varias contr i buc i ones 



work involved in the production of this volume. espec'ficas referentes a la produccion de este 



By far the bulk of the typing work was done by volumen. Jean Middleton mecanografio la mayor 



Jean Middleton, and the overall appearance of the parte de este trabajo y la apariencia general del 



text owes a great deal to her attention to detail, texto gano mucho gracias a su interes en los deta- 



layout, arrangement, and so on. She functioned lies. Ella opero como adm i n i stradora general de 



as a general manager of the entire project, and todo el proyecto y no es posible sobreestimar el 



we cannot overestimate the magnitude of her con- valor de su contr ibuc ion. Beatriz Moisset Peters 



tribution. Beatriz Moisset Peters spent many dedico muchas horas a la traduccion y correccion 



hours translating and correcting the Spanish de la version en espanol despues que uno de nos- 



versions of the text after one of us (Orejas) otros (Orejas) regresara a Sudamerica. Tambien 



returned to South America, and she also has contribuyo en gran medida a la exactitud del 



contributed greatly to our overall accuracy. trabajo. Gladys Banks y Dolores Icarangal 



Additional typing assistance came from Gladys mecanograf iaron el resto del trabajo. Las figuras 



Banks and Dolores Icarangal. The text figures, del texto fueron hechas por Thomas Yuskiw a menos 



unless otherwise acknowledged, were done by que se especfique otra cosa. 

 Thomas Yuskiw. Finalmente deseamos expresar nuestra deuda 



We wish finally to record our debt to P^-"^ "" R°berto Donoso Barros, que trabajo con 

 Roberto Donoso Barros, who worked with us on nosotros en este catalogo. Talvez se lo deberia 

 this catalogue. He perhaps should have been incluir como uno de los autores en vez de cola- 

 recorded as an author rather than as a colla- borador, ya que^los tres trabajamos en estrecho 

 borator, since all three of us have worked contacto a traves de todo el proyecto. 

 closely together on the entire project. 



