854 Annals of jhe CARNf:GiF, Musf.um. 



Pyi(itiiie/ii. — Pygidium short and wide, gently rounded posteriorly. 

 Axis high, extending about half way to the posterior end and outlined 

 all around by a deep furrow. On the cast the posterior end of the axis 

 is faintly bilobed, and back of it is a shallow groove extending over 

 the posterior slope to the margin. On one specimen the cast shows a 

 ridge in place of this groove. Surface covered with shallow punctce. 



Measiironents. — Whole specimen : length 30 mm.; greatest width 

 at outside of tip of free cheek spines, 41 mm. Width front end of 

 thorax, 26 mm. Width of front of glabella 12 mm. Glabella, at neck 

 ring, 7 mm. wide. Width between eyes, 29 mm. l>etween bases of eye 

 stalks, 19 mm. Height of front of glabella, 10 mm. Length of thorax 

 9 mm. Length of cephalon 11 mm. Pygidium 10 mm. long. 

 Width of axis at cephalon, 10 mm. Axis at pygidium 8 mm. wide. 

 Length of axis on pygidium, 5 mm. 



A large cranidium : width between bases of eyes 31 mm.; length 

 21 mm. Width of glabella : 12 mm. at neck ring; 17 mm. in front. 



Another pygidium : width at front, 23 mm.; greatest width, 27 

 mm.; length, 16.5 mm.; axis 8 mm. long. 



Locality. — Figured specimen from middle of Crown Point section. 

 It is now in the Cornell LTniversity Museum. The species is very com- 

 mon at Crown Point, Valcour, Valcour Island, Chazy, New York, 

 and Isle La Motte, Vermont. 



Family PROF TI DAP: Barrande. 



(lenus PROETUS Steininger. 



Proetus clelandi sp. nov. (Plate 13, figures 13, 14.) 



In the Jewett collection, now in the Cornell L-niversity Museum, 

 are two small specimens labeled SphcvrexocJiiis ? which are evidently a 

 species of Proetus. The specimens are two cranidia in a coarse red- 

 dish limestone, but the matrix contains no evidence by which it can 

 be told from what horizon of the Chazy it was derived. 



Description. 

 Cephalon. — Glabella strongly convex, abrupt in front and at the 

 sides. There are two pairs of very faint glabellar furrows, the poste- 

 rior pair a little longer and deeper than the anterior pair. Margin in 

 front of the glabella narrow and concave. Neck segment narrow and 

 convex, with a deep furrow separating it from the glabella. There is 



