668 Pomona College Journal of Entomology 



b. Prebasal jilate not exposed; pairs of legs, forty-five to fifty-three. 



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

 cephalic plate longer than wide. P. heathi Chamberlin 



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

 than long; ceplialic plate nearly equal in length and breadth. 



P. heathi catalinae subsp. nov. 



Pectiniunguis americanus BoUman 



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 yellow 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, 

 elliptical. Coxopleural pits covered by last ventral plate. Anal legs entirely 

 without trace of claws. Pairs of legs near sixty-five. 



Pectiniunguis montereus Chamberlin 



This species 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 P. 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 deeper colored, some appearing red like a Linotenia. The body is decidedly 

 though very gradually attenuated cephalad and more abruptl_y 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 far as noted, fifty-five to sixty-one. Length up to 

 50 mm. 



Pectiniunguis heathi Chamberlin 



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

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

 over the basal. Ultimate article of antennae 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 developed than in monaereus. Pairs of legs, forty-five 

 to fifty-three. Length 22 mm. 



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

 up from an Indian mound in sandy soil, and from Los Angeles, where the author 

 secured a specimen also by digging. 



