28 PUBLICATIONS OF SPENCER F. BAIRD. 



1853. Baird, Spencer F., and Charles Girard — Continued. 



15. Meterandria nohilis, B. and G., n. a 390 



Leona and Camonche Springs. 



16. Heterandria patruelis, B. andG.,n.8 390 



Hydi'ographic basin of the Rio Nueces. 



17. Heterandria occidentalis, B. andG.,n. s 3fl0 



Rio Sauta Ciui of the Rio Gila. 



46. 



1853. Baird, Spencer F., and Charles Girard. Description of New Species of 

 Fishes collected by Captains R. B. Marcy and Geo, B. McClellau in Arkansas. 

 < Froc. Acad. Nat. Sci. Fhila., vi, 1853, pp. 390-392. Read Aug. 30, 1853. 



1. Pomotis breviceps, B. .and G., n. s 390 



Otter Creek, Arkansas. 



2. Pomotis longulua, B. and G., n. s 391 



Otter Creek, Arkansas. 



3. Jjeueiscus lutrensis, B. and G., u. s. 



Otter Creek, Arkansas. 



4. Leuciscus hubalinus, B. and G., n. s. 



Otter Creek, Arkansas. 



5. Ceratichthys vigilax, B. and G., n. s. 



Otter Creek, Arkansas. 



47. 



1853. Baikd, Spencer F., and Charles Girard. Fishes [of the Zufii River]. < Sit- 

 greaves^ Report of an Expedition down the Zuni and Colorado Bivers. Washing- 

 ton, 1853. pp. 148-152. 

 Descriptions and synonymy of the following genus and species : (See No. 43, above.) 

 Giia, B.&G 143. 



1. dilarobusta, B. &G 148, pLi (fishes). 



Zuiii B. 



2. Gilaelegana,^. &G 150,pl.ii (lishes). 



Zuni R. 



3. Oila gracilis, B. &G 151, pi. iii (fishes). 



Zuni E. 



48. 



1853. Baird, Spencer F. [Directions for making collections in Natural History, 

 prepared for the use of the parties engaged in the Exploration of a route for 

 the Pacific Railroad along the 49th parallel.] 4to, about 10 pp. Printed on 

 thin blue paper. 



I have not been able to find a copy of this paper. The above title is supplied from the 

 memory of Professor Baird. — G. B. G. 



49. 



1853. Baird, Spencer F., and Charles Girard. Reptiles [of the Rod River Re- 

 gion]. <^Marc\j and McCleUavi's Exploration of the Bed Biver of Louisiana in 

 the year 1852. AVashington, 1853. (Appendix F.) Bvo. pp. 217-244. 



18 (10 4- 6 + 2) species are described, and of these 11 are figured. Those designated by a * 

 are here figured for the first time. Generic and specific diagnoses and descriptions are given 

 and a partial synonymy. 



SERPENTS. 



I. Cro talus, Linn 217. 



1. Crotalus confluentus. Say 217, *pL i, 3d vol. 



II. Eidcenia, B. & G 219. 



2. Eutcenia proxima (Say), B. & G 220, *pL ii, 3d vol. 



3. Eutcenia marciana, B. &. G 221, *pl. iii. 



m. Heterodon, Va.lAe,Ji 222. 



4. Heterodon nasicus, B. & G 222, *pl. iv. 



