102 



in proportion to their size, and the same is true to some extent of the 

 adults. Temperature and liumidity are strong factors in the develop- 

 ment and beha\4our of the \-arious species. The number of eggs laid 

 under normal held conditions \-aries from 200 to 500, occasionalh^ 

 more, and extends o\-er a period of from four to eight weeks under 

 optimum conditions. 



EssiG (E. O.). Apliididae of California : New Species of Aphididae 

 and Notes from, various Parts of the State, but chiefly from the 

 Campus of the University of California, Berkeley, California. — 



Univ. Ccilifonn'a Piibiis. Eni., Berkelcv, i, no. 7, 20th Jul\- 1917, 

 pp. 301-346, 30 hgs. [Received 6th January 1921.] 



The new species described are : — Myzocallis aritndinariac and 

 M. arundicolcns, on wirious kinds of bamboo ; Symydobius 

 agrifoliae, in colonies on the bark, and sometimes the leaves, of the 

 coast live oak, Qncrcus agrifolia ; Myziis aquilegiae, on Aqitilegia 

 truncata and A. chrysantlia ; Aphis can, on wild anise, Carum 

 kelloggi, and occasionally on Angelica tomentosa. 



Notes are given on a number of other Aphids injurious to plant life 

 in California. 



KoFoiD (C. :\.) & SwEzv (O.). studies on the Parasites of the 

 Termites, i-iv. — Univ. California Pubns. ZooL, Berkeley, xx, 

 nos. 1-4, 14th Julv 1919, pp. 1-116, 14 plates, 8 figs. [Re"ceived 

 6th January 192 1. "j 



These papers deal with the following flagellates, occurring as intestinal 

 parasites of Tcrmopsis angiisticollis, Wlk. : — Sfreblouiastix strix, 

 gen. et sp. n. ; TricJiomitiis termitidis, sp. n., which is apparent!}" not 

 injurious to its host, but feeds on the debris of the intestinal contents, 

 a new sub-genus, Trichomitopsis, being erected for it ; Trichonympha 

 campanula, sp. n. ; and Leidyopsis sphaerica, gen. et sp. n. 



Hess (W. N.). Tlie Ribbed Pine-Borer, Rhagium lincatnm, Oliv. — 

 Cornell Univ. Agric. Expt. Sta., Ithaca, xY. Y., ]\Iem. 33, May 

 1920, pp. 367-381, 1 plate, 6 figs. [Received 6th January 192L] 



Rhagimn lincatiim, Oliv., is one of the commonest and most widely 

 distributed Cerambycids in North America, being especialh' abundant 

 in Central Pennsyh'ania and about Ithaca, New York, where the 

 present in^•estigations were made. Some authors regard the American 

 form merely as a variety of the European R. inquisitor, but in the 

 present paper the insect is gix^en specific rank. All the common 

 species of pine are attacked, though white pine [Pimts strohus), 

 pitch pine [P. rigida) and red pine [P. resinosa) are apparently preferred. 

 All stages of the insect are described. The beetles begin to emerge 

 about the last week in April, and feed on the pollen of various flowers. 

 Mating occurs soon after emergence, and oviposition begins about 

 the middle of May. A single female lays from 120 to 165 eggs, in masses 

 of about 20, in crevices between the layers of the outer bark. These 

 hatch in from 8 to 10 days, the young lar\-ae working their way through 

 the bark, where thcv feed during the whole larwil life on the 



