. Annals. Entomology. 1923] Ewing: Holosiro A car aides 389 anterior marc^in of maxillary lobe of coxa II for most of its length, almost straight. Coxa I proper is wedge-shaped internally. Maxillary lobe of coxa II somewhat comma-shaped, with the tail of the comma swollen on the inside. Coxa II proper a long band of chitin with almost parallel sides. Coxa III about as long as II but somewhat wedge-shaped. Coxa IV fully one-half as broad as long. Genital opening arched in front and partially covered behind by a projecting margin of chitin. Each coxa has several setae; maxillary lobe of coxa I w
. Annals. Entomology. 1923] Ewing: Holosiro A car aides 389 anterior marc^in of maxillary lobe of coxa II for most of its length, almost straight. Coxa I proper is wedge-shaped internally. Maxillary lobe of coxa II somewhat comma-shaped, with the tail of the comma swollen on the inside. Coxa II proper a long band of chitin with almost parallel sides. Coxa III about as long as II but somewhat wedge-shaped. Coxa IV fully one-half as broad as long. Genital opening arched in front and partially covered behind by a projecting margin of chitin. Each coxa has several setae; maxillary lobe of coxa I with a single seta which is situated at the outer posterior angle; maxillary lobe of coxa II on the left side with six setae, on the right with Details of Holosiro acaraides, new genus and species; a, ventral view of cephalothorax; b, ventral view of tip of abdomen; c, dorsal view of tip of tarsus IV; d, side view of tarsus and metatarsus I. Mouth-parts of the usual type of the family Sironidae. Cheliceras reaching to about the middle of the first coxae; movable and fixed arms subequal and each with 6 to 7 teeth; pedipalps long and slender reaching to about the middle of tibiae of first pair of legs; last segment about three-fourths as long as next to last and terminating in a simple claw. Legs similar; first and last pairs subequal and slightly longer than the second and third pairs. Tarsi of legs I and II simple; of legs III and IV (Fig. 1) rather complicated and as described in the generic diagnosis of Holosiro. Metatarsi of all the legs somewhat curved, decidedly pedicellate and scarcely half as long as the tarsi. Tibia of leg I almost twice as long as metatarsus of leg II somewhat shorter, and of leg III and IV but little longer than metatarsus. Abdomen of same width as cephalothorax; sparsely clothed with short set« and more strongly tuberculate than the legs. Dorsal sclerites 1-8 fused, 9 united with ventral 8 and 9 to form a single sclerite which. Please note th
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