170 Mr. L. E. Griffin on the 



short and small, not one third of its length ; the process at 

 the outer base of the third lobe about as large as" those at the 

 inner bases of the median lobes ; the usual row of glands just 

 beyond the second long process, but they are small, much as 

 in C. calurus ; anal orifice a long way from the hind end, but 

 still caudad of the level of the posterior circutngenital glands. 



Chrysomphalus albopictus (Ckll.) . 

 Mexico : Cuautla, on twigs of rose, May 31, 1897 (Koebele, 

 1769) ; Cuautla, on Myrtus (Koebele). 



Chrysomphalus agavis (Towns. & Ckll.). 

 Mexico: on "Tabucha," May 1896 {Townsend). Div. 

 Ent. 7217. 



Chrysomphalus dictyospermi (Morgan) . 

 Mexico : Oaxaca, on leaves of Pinus, Aug. 20, 1897 

 (Koebele, 1697, pars). 



Section Melanaspis, Ckll. 



Chrysomphalus nigropunctatus (Ckll.). 



Mexico: Amecameca, June 6, 1897, "on wild tree re- 

 sembling tobacco" (Koebele, 1740) ; Mexico city, on bark of 

 maple, May 22, 1897 (Koebele, 1741) ; on Baccharis glutinosa 

 at Mixcoac, June 22, 1897 {Koebele, 1743). 



Chrysomphalus lilacinus (Ckll.). 



Mexico : Nogales, on Quercus undulata, April 10, 1897 

 (Koebele, 1629). 



XXVI. — Notes on the Tentacles of Nautilus pompilius. 

 By Lawrence E. Griffin*. 



The following notes on the structure and homologies of the 

 tentacles of Nautilus describe points which have been of great 

 interest to me and which seem important enough to justify 

 publication preliminary to a complete account of the anatomy 

 of the Nautilus. 



* From the ' Johns Hopkins University Circulars/ November 1898, 

 pp. 11-12. 



