1909.J NATURAL SCIENCES OF PHILADELPHIA. 421 



would have made them very difficult to capture, had they not 

 almost invariably alighted in an exposed position. As they were 

 constantly alert, the only successful way to capture them was by a 

 quick sweep of the net. The types of the species came from the Cahon 

 Pass and Mt. Wilson. 



Morsea californica tamalpaisensis n. subsp. 



Types : cT and 9 ; Mt. Tamalpais, Marin County, California. 

 August 23, 1907. [Hebard Collection.] 



A series of thirteen adult males, two females and four nymphs of 

 a small form of M. californica were taken on the slopes of Mt. Tamal- 

 pais, at elevations of from 1,500 to 

 2,100 feet, on August 23. 



This geographic race differs from «*—» ~~» -»« 

 the typical form from the Sierra 

 Madre of southern California in the 

 angle of the vertex being slightly 

 more protuberant and more decid- 

 edly acute-angulate when seen from 



the side, in the antenna? being some- Fig. 3. — Morsea californica tamal- 



, , , v , , ,i paisensis n. subsp. Lateral view 



what more expanded distad, m the £ f male type ^ 3 ^ 



male cerci being slightly more ro- 

 bust and shorter, in the caudal margin of the pronotum being more 

 decidedly angulate-emarginate and in the general size being smaller. 



Measurements. 



Length of body, 10 mm. 14 mm. 



Length of pronotum 2 2.2" 



Length of caudal femur, 8.2 " 9 



The coloration is much as in the typical form, the nymphs being 

 ochraceous-red, one adult female also being decidedly ochraceous. 



Figs. 4-7. — Lateral views of heads of male (4) and female (5) of M. californica 

 ° tamalpaisensis and of male (6) and female (7) of M. californica. (X 3$.) 



These reddish individuals were captured on manzanita (Arctostaphylos 

 sp.), with the bark of which they are uniformly colored. 



The habits of this subspecies were essentially the same as those of 

 the typical form. The insects were always more abundant on the 

 bushes along the summits of the ridges. 



