119 



Abstract, by the author, of a paper published by liim in the JNIem. de 

 TAcad. des Sciences de Belgique, v. 42 (a. 187G). 



* 873. Ja. Wood-Mason. On the femoral brushes of the 

 MaiitidjB and their function. p. 438-439 [Nov., 1876], p. 

 507 [Dec., 1876]. 



Brushes of stiff' hairs were found near the distal end of each of the fore 

 femora in numerous species of 29 genera and probably occur throughout the 

 whole group; they are used to keep the eyes and ocelli in a functional con- 

 dition, and lire present in the young when these (juit the egg. [Prof. Wood- 

 INlason says, 1. c., v. 19, p. 269, that these brushes were previously men- 

 tioned by Stal, although no suggestion was made as to their possible use.] 



* 874. Ed. Brandt. Anatomical and morphological re- 

 searches on the nervous system of hymenopterous insects, p. 

 504-506. [Dec, 1876.] ' 



O. Biitschli and A. Kowalewski have proved that the embryos have 

 seventeen ganglia — one supraceso])liagea], three suboesophageal, three tho- 

 racic, ten abdominal; the three suboesophageal unite to form one in the 

 larva; the last three abdominal form the last one in the larva ; the larvae of 

 Hymenoptera therefore have thirteen ganglia, while the larvje of Lepido- 

 ptera have twelve. The adult Hymenoptera have the two cephalic, two or 

 three thoracic and from three to seven abdominal ganglia. The article 

 states the number and composition of the ganglia in the respective genera 

 and sexes. [From the Comptes rendus, Sept. 18, 1876, p. 613.] 



The Annals and Mag. Nat. Hist., ser. 4, v. 19, contain 



nos. 875 to 879. 



* 875. W. C. Hew^itson. Descriptions of twenty-five 

 new species of Hesperidse. p. 76—85. [Jan., 1877.] 



Describes 25 (H. hida, H. Jidicula, H. egJa, H. mic/ia from Costa Rica 

 zzzi 'N. A.) new species of Hespcria ; four species are from parts .un- 

 known. 



* JoLY. On the reproductive apparatus of the 



Ephemeridas. p. 193-195. Feb., 1877.] 



Describes the structure of the testes and penises of Baetis and of the 

 ovaries of Palingenia. 



* Megnin. On the power possessed by certain 



mites, with or without mouths, of living without food through 

 entire phases of their existence or even during their whole 

 lives, p. 270-271. [Mar., 1877.] 



The Ixodes found attached to animals are always fecundated females, to 

 which the male adheres by a copulatory lip ; they are oviparous and pro- 

 lific ; the larvae live on the food which is enveloped in their bodies while 

 they are yet in the egg, and the males never take food. The mouthless 



