( 54 ) 



of small hairs. The occi|mt liear.s oae rather short ami thin hristle laterally 

 above the antennal groove. The bristle which is situatcil at the ventral angle 

 of the occiput is very long, and is uot accompanied by a second bristle, as is the 

 case in leiicopus. The rostrnm reaches to the apex of the trochanter, while in 

 leucopiis, according to Baker, it extends only four-tifths the length of the coxa. 



Thorax. — The pronotniu bears a comb of lit s])incs, the ventral spine on each 

 side being short and narrow. The meso- and mctanota have each two rows of 

 bristles as in li'i/i-o/ii/.'i ; and tlie mesonotnni bears in addition a row of numerous 

 small hairs at the basal edge and or T long slender spines on each side in front 

 of the apex. The epimerum of the metathorax has ubont T bristles (3, li, J), which 

 are rather irregularly arranged. 



Abdomen. — The abdominal tergites, including the Krst, have each two rows of 

 bristles. The seventh tergite has one long and one shorter apical bristle, the 

 long one being only a little shorter than the first hindtarsal segment. Tiie 

 sternites of the third to seventh segments have each 3 bristles on each side, 

 while the basal sternitc bears one lateral and one ventral bristle on each side. 



Li'(f». — The bristles on the tibiae and tarsi are less nnmerons than in C. keeni 

 Baker (18'.t6), the first hindtarsal segment bearing only 7 pairs on the hinder 

 side. The longest ajiical bristle of the second hindtarsal segment reaches to 

 the apex of the third segment. The proportions of the segments of the midtarsns 

 are : 20, 17, 13, 9, ao, and of the hindtarsus, 4«, 30, 21, 11, 23. 



Modijicd Scijmcnts. — S. Similar to those of C. kccni; but ijnite distinct. The 

 eighth tergite bears a row of 8 long bristles on the njiper portion of the dorsal 

 edge, and about 20 along the lower edge, all these bristles being slender and 

 some of them very long. The movable process of the clasi)er is broader than in 

 kecni., and bears two short thick spines, and at the ajiex a long bristle, as shown 

 in the figure (PI. Vlll. fig. 6) ; the upper of these sjiities ends in a short point. 

 The nintb stcrnite bears very numerous small hairs along the ventral edge and 

 on the outer surface. The anal segment is very long. 



Length : 2 3 mm. 



We have one i off Califoruian Grey S(]nirrel, collected at King's River, 

 California, on July 25, 180(3 ; received from Dr. G. H. F. Nuttall. 



3. Ceratophylliis ponerus spec. nov. (PI. V'lll. fig. 5). 



Nearest to ('. a&io Baker, Free. I'.S. ^at. Mus. xxvii. p. 406 (P.i04). 

 Only one ? known. 



Hi ail. — The frons bears two rows of bristles as in C. a.sio, and the occiput 

 an obli<iue lateral row also as in that species. The first segment of the antenna 

 bears nmuerons small hairs all over. 



77/o/-«.r. — The pronotum has a comb of 24 spines. The mesonotum has one 

 row of hiiig bristles and three rows of slioit ones, in addition to numerous 

 bristles situated at the basal edge, and another row of slender spines in front of 

 the apex. The metanotum has an apical si)ine on each side, in this respect 

 resembling the first to sixth abdominal tergites. The epimerum of the metathorax 

 is furnished with 12 to 14 bristles arranged in four rows (3, 4 or », 4 or 5, 1). 



Abdomen. — The seventh tergite bears 3 antepygidial bristles, the middle one 

 being very long and surpassing in length the first segment of the hindtarsus. 

 The basal sternitu bears a lateral patch of small hairs, besides some small 



