LASIOPYCA 293 



consequently should not be classed as subspecies. That 

 eventually some may be discovered to have intermediate forms 

 between them and the nearest allied species is possible, but until 

 such forms are found, the animals in question should have 

 specific rank. 



The Keys, to those who have but slight knowledge of the 

 species of Lasiopyga are useful, but in all save the Mona and 

 Petaurista groups, the subspecific forms are omitted, though it 

 must be said that with a somewhat doubtful exception, L. 

 NiGRiPES, all the so-called subspecies in these two Keys, are 

 undoubtedly entitled, so far as we have knowledge of them at 

 present, to a full specific rank. The paper is illustrated by cuts 

 of various species taken from life, and four uncolored plates of 

 the heads of various allied species. The principal defect in a 

 paper such as this, treating of the largest group of the Primates, 

 is, that the Author was entirely unacquainted with any specimens 

 of the genus, not accessible in London and its vicinity, and it is 

 to be regretted, that when he undertook so important a task, 

 and which he accomplished so far as his material permitted with 

 conscientious fidelity, he had not been able to acquire a wider 

 view and firmer grasp of his subject, which an investigation of 

 the far greater material of this group in Continental Museums 

 would have given him. 



1908. Lonnberg, Expedition to Kilimanjaro-Mweru. 



In this work a Lasiopygus from Mt. Kilimanjaro, is somewhat 

 doubtfully separated from L. albigularis as (C.) a. kino- 

 botensis. 



1909. D. G. Elliot, in Annals and Magazine of Natural History. 

 Lasiofyga insignis ; L. insolita ; L. t. griseisticta; L. rubella; 

 L. grayi pallida; L. sticticeps and L. silacea ; first described 

 under Cercopithecus. 



1910. D. G. Elliot, in Annals and Magazine of Natural History. 

 Lasiopyga inobservata first described as Cercopithecus in- 

 observatus. 



1910. 0. Thomas, in Annals and Magazine of Natural History. 



Lasiopyga ascanius zvhitesidei first described as Cercopithecus 



a. whitesidei. 

 1910. D. G. Elliot, in Proceedings of the United States National 



Museum. 



Lasiopyga lutea first described as Cercopithecus luteus. 



