I02 The Ottawa Naturalist. [July 



terminal portions of the branches, were sustained by apparently 

 lax, often extremely slender petioles, sometimes several times as 

 lono^ as the blade of the leaf. No precise correlation has yet been 

 made between the ]Vliittleseyce and any of the types of PaljEOzoic 

 fruits, one or more genera of which are usually found associated 

 in the same beds. 



The species already attributed to this g-enus are : Whitlleseya 

 elegdiis,^ iW o'dssi folia, ~ W. undulnta,''' W. microphylla,* IV. 

 Cainpbelli,-' and IV. Lesctiridua/' To these are now added three 

 species from Nova Scotia and New Brunswick, as follows : 



Whittleseya desiderata, n. sp. 



PI. VII, Fi.y-s. I, 2, \a. 



Leaves of moderate thickness, oblong-, slig^htly cuneate, 9 mm.- 

 14 mm. in length above the petiole, 6 mm. -10 mm. broad near the 

 truncate apex, slightly rounded at the distal angles, rapidly con- 

 tracted in the lower one fourth to form a round-obtuse or obtuse 

 base; apex crenulo-denticulate, often obtusely denticulate, with 

 short, rounded teeth ; vascular bands or costae 18-24 in number, 

 often low-rounded, usually distinct, confluent and generally once- 

 forked at a narrow angle at the base, the outer two or three on 

 either side blending in a marginal band; petiole relatively broad 

 at the top, the length and mode of attachment being unknown. 



The species here described is one of the smaller of the genus, 

 of which, however, it shows well the distinctive characters. As is 

 usual in this group, especially in the type, JVhiitkKseya clcgans, the 



^ Newberry, Ann. Sci., vol. i, Cleveland, 1853, p. 1 16, fiji^s. i, 2. Les- 

 qiiereux, Coal Flora, vol. II, p. 523, pi. I\', f. 1., la. 



- Lesquereux, Coal Flora, Atlas, 1879, p. 2, pi. I\', f. 2 {]V. integrifulia, 

 op. cil., vol. II, p. 524,) 



■' Lesquereux, op. cit., vol. II, p. 525, pi. IV', f. 3. 



•* Lesquereux, op. cit., vol. Ill, p. S43. Lesley, Diet. Foss. Pa., vol. Ill, 

 p. 1256, text-fig's. 



' D. White, 2oth Ann. Rept. U. .S. Geol. Survey, Pi. II, 1900, p. 867. 



^ Loc. cit., p. 867. 



