Pomona College Journal of Entomology 669 



Pectiniunguis heathi catalinae subsp. nov. 



Head yellowisli; antcnii!e and body pale j'cllowisli wliitc. Cephabc plate 

 widest anteriorly, narrowed caudad; anterior margin rounded, the caudal truncate; 

 equal in length and breadth or very nearly so. Basal plate largely covered by 

 the cephalic, the exposed portion bring very short, about eight times wider than 

 long. Claws of tlie prehensorial feet when closed extending a very little beyond 

 front margin of head; joints of feet all unarmed. Prosternum with chitinous 

 lines; wider than long (about 23:17). Antennse strict!)' filiform, not at all 

 attenuated. I>ast ventr.il jjlate wide, sides converging caudad. Coxopleural pits 

 two on each side, covered by edge of ventral plate. Anal legs in male crassate, 

 ending in a claw. Pairs of legs, forty-five to fifty-one: Length about 16 mm. 



Localities. — Catalina Island; Claremont (Baker). 



Family Himantariidas 



Antennae sliort, strongly flattened, broad at base and markedly attenuated 

 distad. Labrum well developed, composed of a single piece which is free, and 

 incurved and dentate along the margin. Mandible with a single dentate and with 

 several pectinate lamellae. Prehensorial feet weakly developed, not dentate 

 within. The ventral pores are in a sharplj' delimited central area. Anal pores 

 never present. 



The two genera included in the key below are the only Californian genera at 

 present known ; but Ilaplophilus, which is known from Montana and Mississippi, 

 may be found to occur. 



Key to Genera 



a. Anal legs ending in small claws ; on some of the middle segments supra- 



scutella are present. Genus Notobius Cook 



aa. Anal legs clawless ; no suprascutella present. Genus Gosiphilus gen. nov. 



Genus Notobius Cook 



Some of the segments in middle portion of the body with a row of supra- 

 scutella or paratergites above the level of the spiraculiferous sclerites. Labrum 

 deeply incised at median line. Coxosternum of first maxilla deeply incised at 

 middle, almost completely divided but still coalesced proximally. Last ventral 

 plate very wide ; coxopleural pores numerous, small, arranged along edge of 

 ventral plate. Spiracles all circular. Anal legs terminating in a slender claw 

 in adults. 



One species known. A second form, inermis of Wood, is listed here tenta- 

 tively. 



Notobius teniopsis Wood 

 Syn. Chomatobius mexicanus Seliwanoff 

 Notobius californicus Cook 

 This is a very long species with from one hundred and twenty-nine to one 

 hundred and forty-nine pairs of legs in individuals thus far observed, most having 

 from one hundred and thirty-three to one hundred and forty-one pairs. Con- 



