668 Pomona College Journal of Entomology 



b. Prebasal plate not exposed; pairs of legs, fortj'-five to fifty-three. 



c. Basal plate, so far as exposed, but four times wider than long; 

 cephalic plate longer than wide. P. heathi Chamberlin 



cc. Basal plate verj' short, exposed portion about eight times wider 

 than long; cephalic j)late nearly equal in length and breadth. 



P. heathi catalinae subsp. nov. 



Pectiniunguis americanus Bollman 



While this species has not been taken actually within the state, it was 

 originally described from Lower California and its occurrence within our limits 

 is therefore very probable. In this species the body is depressed and but little 

 attenuated. It is brownish 3'ellow in color with an interrupted geminate dark 

 band along the dorsum. The cephalic lamina is equal in length and breadth, with 

 the caudal margin a little incurved. Prebasal plate exposed. Spiracles large, 

 ellil)tical. Coxopleural pits covered by last ventral plate. Anal legs entirely 

 without trace of claws. Pairs of legs near sixtj'-fivc. 



Pectiniunguis montereus Chamberlin 



This sjiecies seems to occur quite commonly along the California coast from 

 the southern portion north at least as far as Monterey Bay, from which it was 

 first described. It is essentially littoral in habit, though it has been occasionally 

 taken some distance inland. Specimens have been seen from the following 

 localities: Dead !Man's Island, San Pedro, (Baker); Santa Barbara, Pacific 

 Grove, etc. (author). 



In general structure similar to 7'. americanus. In alcohol specimens are light 

 brown to yellowish with the head somewhat darker. There may be two parallel 

 dark stripes along the dorsum as in the preceding species. In life the adults 

 are deeijer colored, some appearing red like a Linotenia. The body is decidedly 

 though very gradually attenuated cephalad and more abruptly eaudad. The 

 prebasal plate exposed. Cephalic plate considerably longer than wide, truncate 

 caudally. Ultimate article of antennae shorter than the two preceding taken 

 together. Pairs of legs, so f;ir as noted, fifty-five to sixty-one. Length up to 

 50 mm. 



Pectiniunguis heathi L'hainheiiin 



Body of same general iiabit as the preceding but smaller. Cephalic plate 

 with sides widely excurving. Prebasal plate not exposed, the cephalic lapping 

 over tlie basal. Ultimate article of antenna" about equal in length to the two 

 preceding taken together. The first ten sternites have each a caudal median 

 process which fits into a corresponding pit in the succeeding plate, this feature 

 apparently more strongly develoj)ed than in monwreus. Pairs of legs, fortv-five 

 to fifty-three. Length 22 mm. 



Known from Cypress Point, Monterey County, where a sjieeimen was dug 

 up from an Indian mound in sandy soil, .uul from Los Angeles, wlurc the ,iuth<ir 

 secured a specimen also bj- digging. 



