Howe: Notes on Bahaman algae 97 



specimens of Harvey's collecting at Key West now in the her- 

 barium of Columbia University, in which the number of spores 

 to a sporangium is 200 or more. The peripheral arrangement of 

 the spores about a central cavity, which Cramer emphasizes as a 

 distinctive character of his Botryophora Conquerantii> and which 

 that variety has in common with our variety laxus, seems to be 

 more constant than number and size of spores and may be more 

 significant. Specimens agreeing essentially with Cramer's de- 

 scription of Botryophora Conquerantii have been collected by the 

 writer at Key West, Florida {no. ijji)- 



Neomeris Cokeri sp. nov. 



Plants subcylindrical or clavate, 7-14 mm. long, 1.5-2.5 mm. 

 thick, dark green in upper third or fifth, becoming grayish white 

 below, apex rounded-obtuse or subtruncate, often exhibiting a 

 delicate, translucent apiculum formed of the mantle-caps : * num- 

 ber of successive whorls of branches mostly 60-120 ; number of 

 branches in a whorl 12-56 : hairs of two forms in separate zones, 

 those of one form consisting of a single, clavate, often curved or 

 somewhat hooked cell rich in chlorophyl and having a maximum 

 diameter about equal to that of the supporting cell, the apex acute, 

 obtuse, or more often apiculate ; those of the second form con- 

 sisting of a somewhat similar though slightly narrower basal cell 

 bearing at its apex one or two earlier caducous, more slender 

 branches, these in turn each bearing 2-4 branches ; unicellular 

 hairs or basal cells of the multicellular persisting in the upper 

 third or fifth of the plant, the surface after their fall appearing 

 somewhat shaggy or minutely and irregularly punctate, a cortex 

 scarcely developed: branches of the first order lightly calcified, 

 scarcely coherent ; branches of the second order more strongly 

 calcified, irregularly and imperfectly coherent, subfusiform, often 

 somewhat curved or gibbous, broadest (100-150//) a little above 

 .the middle, tapering to a conico-truncate apex 22-34/; broad at 

 the insertion of the hair : sporangia strongly calcified, free or co- 

 herent in short rows of 2-8, pyriform-obovoid, 1 80-206 p. long 

 (decalcified and including stalk), 90-102 // in maximum width, 

 calcareous capsule 25-40/; thick; spores obovoid, 140-156 fix 

 82-94/;. (Plate 6, figures 3-12.) 



Opposite Current Town, Eleuthera, July 5, 1903. The 

 material collected consists of about thirty individuals. 



* " Kappentheile oder Mantelkappen " of Cramer, Neue Denkschr. Schweiz. Na- 

 turf. Ges. 32 : 12. 1890. 



