Genera and Species of Coccida;. 23 



lliaii Dacti/Io/mis, the latter passing tlirough a Ripersia -stage 

 in the course of its development. 



Eriococcus Palmeri, Ckll., var. a. 



? . — Without ovisac very dark red, with white bristles at 

 sides posteriorly ; dorsum not bristly ; antennaj and legs 

 ferruginous. Ovisac pure white, about 3 millim. long, often 

 smaller. 



Largest dermal spines 48 long. Front leg with femur + 

 trochanter 174, tibia 102, tarsus 117 ; hind leg with femur + 

 trochanter 192, tibia 120, tarsus 129; claw with a miiuito 

 denticle near tip. Caudal tubercles about 90 long, 60 broad 

 at base. Anteiuife 6-jointcd, formula 3 (1 2) 6 4 5, or 3 (6 2 1) 

 (4 5). Segments: (1) 30, (2) 30, (3) 75, (4) 21-24, (5) 21, 

 (G) 27-30. 



Ilab. La Jolla, California, Aug. 7, 1901, clustered on twiga 

 of Erioijonum fascicidatani^ Beiitham. 



E. Palmeri id new to the U.S. fauna. 



CiSSOCOCCUS, gen. uov. 



Belongs to the Eriococciui. Larva typically Eriococeine, 

 with rows of dorsal spines and prominent caudal tubercles ; 

 legs slender, claw very long ; anal ring with long bri.stles ; 

 untenna3 G-jointed, last joint short, third longest. Adult living 

 in a cup-shaped gall ; mouth- parts minute but well developed ; 

 legs and antennie rudimentary ; anal region strongly chiti- 

 nous, with a pair of plates simulating those of the Lecaniiuaj. 



Type C. Ftdleri. 



Cissococcus Fulleriy sp. n. 



Galls in clusters on brandies of Cissus ciinetfolia ; gall 

 cup-shaped, with the top flat, with a minute central orifice. 

 Diameter of gall about 6 millim., height 5 millim. 



^ . — Produces a small amount of cottony secretion. Skin 

 colourless, with numerous small dark chitinous protuberances ; 

 a few hairs and circular glands, the latter having lines radia- 

 ting from a central circle, or (differently focussed) ten dots 

 arranged around a central dot. Tracheai and spiracles large 

 and prominent. Mouth-parts minute but well developed. 

 Legs rudimentary, about 105 /u, long, stout, with the claw 

 and digitules well developed ; tarsus extremely short, much 

 broader than long. Anal region dark, strongly chitinous, 

 with an elongated-oval structure, pointed apically, consisting 

 of two contiguous plates, which are covered with tubercles 

 bearing stout bristles, recalling the armature of a pine-apple. 



