8 NEW CALIFORNIAN APHIDIDAE 



.063 mm.): hind tarsus, .136-453 mm. (ave. .145 mm.): wihg length, 2.44^2.55 

 mm. (ave. 2.5 mm.); wing width, .918-. 986 mm. (ave. .95 mm.); wing expan- 

 sion, 5.1-5.6 mm. (ave. 5.4 mm.). (This description was drawn from seven 

 individuals reared from material collected on April 22, 1916.). 



Apterous viviparous female. — Colored thi'oughout as in the alate. Antennae 

 are three-fourths as long as the body, III being the longest segment, followed 

 by IV, which is about tliree-fourtlis as long. V is either equal to or slightly 

 shorter than IV, the latter being the usual case. The base and spur of VI 

 are subequal, and together about the same length as V, in some specimens 

 being slightly longer and in some slighth' shorter than V. The base of VI is 

 usually a verj^ little longer than the spui'. The only sensoria are the primary 

 ones on V and VI, and the accessory on VI. 



Measurements: Body length, 1.68-1.97 mm. (ave. 1.841mm.): width of ab- 

 domen, 1.24-1.45 mm. (ave. 1.354 mm.): antennae total, 1.26-1.38 mm. (ave. 

 1.304 mm.); Ill, .365-.390 mm. (ave. .381 mm.); IV, .289 mm.; V, .238-.276 

 mm. (ave. ,2482 mm.); VI base, .136-153 mm. (ave. .1416 mm.); VI spur, 

 .085-.102 mm. (ave. .0961 mm.): cornicles, .042-.059 mm. (ave. .052 mm.): 

 hind tarsus, .153 mm. (This description was drawTi from twelve individuals 

 collected on April 22, 1916.) 



Nectarosiphon morrisoni new species (Figs. 4, 28, 31, 40, 41.) 



In May 1915, Harold Compere of the California State Insec- 

 tary collected a number of specimens of a species of a Nectar- 

 osiphon from the twigs of Monterey cypress (Cupressus macro- 

 carpa), in Golden Gate Park, San Francisco. He found both the 

 alate and apterous viviparous females. In August 1916, the 

 writer found the apterae of the same species infesting the ter- 

 minal leaves of both the Monterey cypress and the blue cypress 

 {Cupressus guadalupensis) , in Exposition Park, San Diego. This 

 species was studied quite extensively by Morrison, who found it 

 again in Golden Gate Park, but who was unable to identif}^ it 

 with any species known to him. Neither Essig nor Davidson 

 knew it. Consequently it is herewith described as a new species, 

 being named after jNIr. Harold Morrison of the Federal Board of 

 Horticulture, Washington, D. C, to whom the writer here wishes 

 to acknowledge his great indebtedness for assistance and advice. 

 Cotype specimens are in the writer's collection and in the col- 

 lection of the University of CaHfornia under the serial number 

 EOE 88. 



Alate viviparous female. — Prevailing color pea green to dark green. Head 

 dusky, eyes red. Antennal segments I and II, and the base of III concolorous 

 with the head, remainder black. Beak green with apex dusky. Thorax green, 

 except the thoracic lobes which are dusky-amber to black. Abdomen pea 



