101 



noiativentris, Gir., from Pseudococcits sp. on grape; A. pallidus, 

 sp. n., from P. yerbasantae, Essig ; Stemmatosteres apterus, gen. et 

 sp. n., from P. timherlakei, Ckll ; Pseudococcobius fumipennis, 

 sp. n., from Pseudococcits solani, Ckll ; Pseudococcobius clauseni, 

 sp. n., from Erium sp. on cactus; Pseudococcobius chrhorni, Timb.' 

 for which a new genus, Cirrhencyrtus, is erected, reared from Pseudo- 

 coccus ryani, Coq. ; Paraleptomastix abnormis, G'n., type of a new 

 genus, Tanaomastix, parasitic on Pseudococcus spp. ; T. claripennis. 

 sp. n., reared from P. ryani ; T. abnormis. Gir., reared from a species 

 of Pseudococcus (not P. citri, Risso) on Citrus in Japan, and introduced 

 mto Southern California from Sicil}- to check P. citri ; and T. albicla- 

 vata, Ashm., reared from Pseudococcus sp. from the Philippine Islands. 



Swain (A. F.). A Synopsis oJ the Aphididae of CaUfornia.— f/ww. 



California Pubns. Ent., Berkeley, iii, no. 1, 1st November 1919 

 pp. 1-221, 17 plates. [Received 6th January 1921.] 



The new Californian Aphids here described include -.—Lachnus sabi- 

 manus, on digger pine {Piiius sabiniana) ; L. vanduzei, on spruce- 

 Macrosiphum rudbeckiae, Fitch, var. madia, n., on tarweed [Madia 

 sativa) ; and Aphis viburnicolens on laurestinus ( Viburnum tinus) 

 and laurel. 



Keys are given to the genera and tribes of Aphids after Van der Goot 

 and a complete list of the food-plants of Californian Aphids is appended! 



Clausen (C. P.). Life ffistory and Feeding Records of a Series of 

 California Coecinellidae.— Univ. Califomiu Pubns. Ent., Berkeley, 

 1, no. 6,. 17th June 1916, pp. 251-299. [Received 6th Tanuafv 

 1921.] - ^ 



The species dealt with include :~Coccinella californica, Mann. ; C. 

 trifasciata, L., which in several locahties has exercised a considerable 

 check on the numbers of Macrosiphum rosae (rose aphis) ; Hippodamia 

 convergens, which is predaceous on many Aphids, including Phorodon 

 humuh (hop aphis), M. rosae. Pemphigus betae (beet aphis). Aphis 

 neru {oleander aphis). Aphis rumicis (bean aphis), Hvalopterus 

 arundmis (plum aphis), A. gossypii (melon aphis) and, less 

 frequently, on Chromaphis juglandicola (walnut aphis), Eriosoma 

 [bchizoneiira) lanigerum (woolly apple aphis), and Brevicorvne {Aphis) 

 brassicae (cabbage aphis) ; Hippodamia ambigua, Lee. ; Olla abdomi- 

 nalis. Say, one of the most important enemies of Aphids in California, 

 feeding upon many species, but showing a decided preference for 

 C . juglandicola ; 0. oculata, F., generally found in association with the 

 last-named ; Adalia bipunctata, L., predaceous upon all the commoner 

 Aphids ; and Cycloneda sanguinea, L., which feeds extensively on 

 hrisoma, lanigerum and the commoner Aphids. 



The hfe-histories, seasonal occurrence, oviposition records and feeding 

 records of larval and adult stages of each species are worked out. 

 1 he average life-cycle of any of these species in Californian summer 

 conditions is approximately 27 days ; of these, five are passed in the 

 egg-stage, five m the first larval stage, three in each of the second and 

 thn-d larval stages, six in the fourth stage, and five in the pupal 

 stage. The number of Aphids eaten by the larvae is, generally speaking. 



