140 Mr. C. J. Gahan on 



maxillary suture 19"5, 20, 19*5; iiiterorbital constriction 

 18*5, 18, 18'2 ; breadth of brain-case above roots of zv^o- 

 raata 21-6, 21-6, 21-3; mastoid breadth 29-9, 29-4, 29-8; 

 upper tooth-row (all teeth) 34*3, 33' 9, 33. 



Sjjecimens examined. — Four, three adults and one young, 

 all trom Pulo Tello. 



Remarhs. — The small size of Cynoceplialus tello7iis at once 

 serves to distinguish it from its geographical ally, C. saturatus 

 (Miller) (Smithsonian Miscell. Coll. xlv. p. 51, November 6, 

 1903), from Tana Bala and Pulo Pinie of the Batu Islands, 

 of wliich it is a diminutive and lighter-coloured form. Its 

 close resemblance to C. tuancus is probably fortuitous and 

 does not indicate a phylogenetic relationship. 



XXII. — Notes on North- American Longicorjiia, with Descrip- 

 tions of some 7iew Species. By C. J- Gahan, M.A. 



Among the better known of the North- American Longicornia 

 are two species of Clytini, one of which is very injurious to 

 the locust-tree (Robinia pseudacacia) and the other just as 

 destructive to the hickory (Carya alba &c.). In reference to 

 the second of these species, Packard, in his ' Forest Insects ' 

 (Fifth Report of the United States Entomological Cora- 

 mission, 18i:i0), writes: — "Of the 170 species of insects 

 which live at the expense of the hickory, the most annoying 

 and common borer is the Cyllene picta, or common hickory 

 borer." This species has, however, been wrongly identified 

 by American entomologists as the Leptura pictus of Drury. 

 It is described below as a new species under the name of 

 Cyllene caryce. For many years Leptura pictus, Drury, was 

 correctly regarded as a synonym of Leptura robinice, Forst. 

 It was only when the hickory borer was discovered to be a 

 distinct species from the locust-tree borer {Cyllene robinice) 

 and a separate name was required for it that it began to be 

 known as Cyllene j^icta, Drury. How the mistake arose of 

 giving it this name is difficult to understand, because Drury's 

 figure and description are clearly those of the species pre- 

 viously described by Forster (the latter, in fact, quotes 

 Drury's figure), and Drury distinctly states that he " received 

 it from New York, where they are found on the locust-tree." 

 The synonymy of Cyllene robinice, the locust-tree borer, is 

 as follows : — 



