120 



Annals and Mag. Nat. Hist., v. 19. 

 Acarina, like Hypopus, Iloinopus, Trichodactylus and Astoina, are nymphs, 

 and take no food in the nyniphal, stage, but the imagos are very voracious. 

 [From the Comptes rendus, Nov, 20, 187G, p. 993.] 



* 878. Fel. Plateau. Note on the phenomena of diges- 

 tion and on tlie structure of the digestive apparatus in the Pha- 

 langida. p. 272-274. [Mar., 1877.] 



The Araneida ai'e sucking animals ; the Phalangida eat tlieir prey : the 

 arrangements of the digestive tube of the two are compared. Tlie organ 

 hitherto called the liver in decapod Crustacea and in Araneida is present 

 in Phalangida, and is the organ of secretion of the digestive liquid intended 

 for the emulsion of the fats and for the solution of the albuminoids. 



* 879. Ja. Wood-Mason. On the final stage in the de- 

 velopment of the organs of flight in the homomorphic Insecta. 

 p. 380-382. [May, 1877.] 



The wings, other than the small flattened duplicatures of the integument 

 "which form the " sheath " are not developed in Orthoptera until after the 

 penultimate moult; then they grow rapidly, becoming closely packed in 

 transverse and longitudinal plaits. 



The Annals and Mag. Nat. Hist., ser. 4, v. 20, contain 

 nos. 880 to 881. 



* 880. O. P. Cambridge. On some new and little-known 

 spiders from the Arctic Regions, p. 273-285, pi. 8. [Oct., 

 1877.] 



Enumerates 13 species ; describes 7 n. spp., of which 3 (^Dictyna horealis 

 (fig.), Erigone lohymperi (fig.), Linyphia turbatrix) are from North Green- 

 land. 



* 881. W. C. Hewitson. Descriptions of twenty-three 

 new species of Hesperida? from his own collection, p. 319- 

 328. [Oct., 1877.] 



Describes 23 (Cyclopkles eryonas from Costa Rica and C. dardaris from 

 Mexico = 2 N. A.) n. spp.; six species are from parts unknown. 



* 882. JoussET DE Bellesme. Phenomena accom- 

 panying the metamorphosis of Lihellula depressa. p. 447. 

 [Nov., 1877.] 



When the imago quits the pupa-skin the function of respiration is not 

 yet set up; the imago distends its digestive tube by swallowing air, forcing 

 the blood into the head, eyes and wings and by it giving their form to these 

 parts and depositing the pigments which color them. [From the Comptes 

 rendus, Aug. 20, 1877, p. 448.] 



Nos. 43-44 were issued April 12, 1878. 



