MUSEUM OF COMPARATIVE ZOOLOGY. 41 
No. 6. The EYES in SCORPIONS. By G.H. Parker. pp.386. 4 Plates. December,1887. 75c. 
No. 7. Studies from the Newport Marine Laboratory. XIX. On certain MEDUSA 
from New England. By J. W. Fewxkes. pp. 32. 6 Plates. February, 1888. $1.00. 
No. 8. On certain Vacuities or Deficiencies in the CRANIA of MAMMALS. By D. D. 
“SLADE. pp.6. 2Plates, March, 1888. 25c. 
No. 9. The Superior Incisors and Canine TEETH OF SHEEP. By Fiorence Mayo, 
pp. 12. 2Plates. June, 1888. 25c. 
No. 10. The RATTLE of the RATTLESNAKE. ByS. Garman. pp. 10. 2 Plates, August, 
1888. 18c. 
Vols. XIV. -XV. [April] contain : — 
A Contribution to American THALASSOGRAPHY. Three CRUISES of the United 
States and Geodetic Survey Steamer “‘ Blake,” in the GULF OF MEXICO, in 
the CARIBBEAN SEA, and along the ATLANTIC COAST of the UNITED 
STATES, from 1877 to 1880. By ALExANDER Acassiz. 2 vols. pp. xxii, 314, and 
(6), 220. Maps and Woodcuts. [April,] 1888. For sale by Houghton, Mifflin, & Co. 
Vol. XVI., Geological Series, Vol. II., contains : — 
No.1. On the Petrographical Characters of a DIKE of DIABASE, in the BOSTON 
BASIN. By W.H. Hosss. pp.12. 1 Plate. March, 1888. 25c. 
(Vol. XVI. to be continued.) 
Vol. XVII. contains : — 
No.1. Studies from the Newport Marine Laboratory. XX. On the Development of the 
Calcareous Plates of ASTERIAS. By J. W. Fewxes. pp. 56. 5 Plates. July, 
1888. $1.00. 
(Vol. XVII. to be continued.) 
In preparation : — 
The Lateral System of SELACHIANS. By Samurt Garman. With 50 Plates. 
On NEW INVERTEBRATES from the Coast of California. By J. WatTER FEWKES. With 
Plates. 
